./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product52.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 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_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product52.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx --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 4583285deb29d8014ded34089a46614a743cea13eee9bbb990cdfd770bfce36e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:18:51,726 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:18:51,846 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-21 22:18:51,854 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:18:51,855 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:18:51,894 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:18:51,895 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:18:51,895 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:18:51,896 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:18:51,898 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:18:51,899 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:18:51,899 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:18:51,900 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:18:51,900 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:18:51,901 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:18:51,901 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:18:51,902 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:18:51,902 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:18:51,902 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:18:51,903 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:18:51,903 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:18:51,904 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:18:51,904 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:18:51,905 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:18:51,905 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:18:51,905 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:18:51,906 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:18:51,907 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:18:51,907 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:18:51,907 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:18:51,909 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:18:51,909 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:18:51,909 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:18:51,909 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:18:51,910 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:18:51,910 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:18:51,910 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:18:51,910 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:18:51,910 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:18:51,911 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:18:51,911 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:18:51,911 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:18:51,911 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_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4583285deb29d8014ded34089a46614a743cea13eee9bbb990cdfd770bfce36e [2023-11-21 22:18:52,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:18:52,273 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:18:52,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:18:52,277 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:18:52,277 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:18:52,279 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/product-lines/minepump_spec2_product52.cil.c [2023-11-21 22:18:55,373 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:18:55,617 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:18:55,618 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/sv-benchmarks/c/product-lines/minepump_spec2_product52.cil.c [2023-11-21 22:18:55,634 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/data/1f56b5fb9/7dfc93f39e414d1bb273f298a12cd251/FLAG3c2b67eb0 [2023-11-21 22:18:55,649 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/data/1f56b5fb9/7dfc93f39e414d1bb273f298a12cd251 [2023-11-21 22:18:55,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:18:55,654 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:18:55,655 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:18:55,655 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:18:55,665 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:18:55,666 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:18:55" (1/1) ... [2023-11-21 22:18:55,667 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61cfc8b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:55, skipping insertion in model container [2023-11-21 22:18:55,668 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:18:55" (1/1) ... [2023-11-21 22:18:55,725 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:18:56,064 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_d709a41a-c063-4f95-917a-09a31a26d148/sv-benchmarks/c/product-lines/minepump_spec2_product52.cil.c[19177,19190] [2023-11-21 22:18:56,071 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:18:56,089 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:18:56,100 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [49] [2023-11-21 22:18:56,101 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [124] [2023-11-21 22:18:56,102 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [354] [2023-11-21 22:18:56,102 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [455] [2023-11-21 22:18:56,102 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [495] [2023-11-21 22:18:56,103 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [530] [2023-11-21 22:18:56,103 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [634] [2023-11-21 22:18:56,103 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1000] [2023-11-21 22:18:56,190 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_d709a41a-c063-4f95-917a-09a31a26d148/sv-benchmarks/c/product-lines/minepump_spec2_product52.cil.c[19177,19190] [2023-11-21 22:18:56,191 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:18:56,212 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:18:56,213 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:56 WrapperNode [2023-11-21 22:18:56,213 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:18:56,214 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:18:56,214 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:18:56,214 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:18:56,223 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:56" (1/1) ... [2023-11-21 22:18:56,251 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:56" (1/1) ... [2023-11-21 22:18:56,290 INFO L138 Inliner]: procedures = 58, calls = 102, calls flagged for inlining = 24, calls inlined = 21, statements flattened = 212 [2023-11-21 22:18:56,291 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:18:56,292 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:18:56,292 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:18:56,292 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:18:56,304 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:56" (1/1) ... [2023-11-21 22:18:56,305 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:56" (1/1) ... [2023-11-21 22:18:56,309 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:56" (1/1) ... [2023-11-21 22:18:56,322 INFO L187 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-21 22:18:56,322 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:56" (1/1) ... [2023-11-21 22:18:56,322 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:56" (1/1) ... [2023-11-21 22:18:56,328 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:56" (1/1) ... [2023-11-21 22:18:56,332 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:56" (1/1) ... [2023-11-21 22:18:56,334 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:56" (1/1) ... [2023-11-21 22:18:56,336 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:56" (1/1) ... [2023-11-21 22:18:56,339 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:18:56,340 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:18:56,340 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:18:56,340 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:18:56,341 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:56" (1/1) ... [2023-11-21 22:18:56,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:18:56,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:18:56,390 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:18:56,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:18:56,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:18:56,433 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-11-21 22:18:56,433 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-11-21 22:18:56,434 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-11-21 22:18:56,434 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-11-21 22:18:56,434 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-21 22:18:56,434 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-21 22:18:56,434 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-21 22:18:56,434 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-21 22:18:56,435 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-11-21 22:18:56,435 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-11-21 22:18:56,435 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-11-21 22:18:56,435 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-11-21 22:18:56,436 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-11-21 22:18:56,436 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-11-21 22:18:56,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 22:18:56,437 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-11-21 22:18:56,438 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-11-21 22:18:56,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:18:56,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:18:56,524 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:18:56,527 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:18:56,887 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:18:57,063 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:18:57,063 INFO L308 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-21 22:18:57,065 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:18:57 BoogieIcfgContainer [2023-11-21 22:18:57,065 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:18:57,066 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:18:57,066 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:18:57,069 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:18:57,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:18:55" (1/3) ... [2023-11-21 22:18:57,070 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@edcff94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:18:57, skipping insertion in model container [2023-11-21 22:18:57,070 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:18:56" (2/3) ... [2023-11-21 22:18:57,071 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@edcff94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:18:57, skipping insertion in model container [2023-11-21 22:18:57,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:18:57" (3/3) ... [2023-11-21 22:18:57,072 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product52.cil.c [2023-11-21 22:18:57,092 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:18:57,092 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 22:18:57,144 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:18:57,151 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;@118089f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:18:57,152 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 22:18:57,155 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 41 states have (on average 1.4634146341463414) internal successors, (60), 50 states have internal predecessors, (60), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-21 22:18:57,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-21 22:18:57,165 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:18:57,165 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:18:57,166 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:18:57,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:57,172 INFO L85 PathProgramCache]: Analyzing trace with hash 565052704, now seen corresponding path program 1 times [2023-11-21 22:18:57,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:18:57,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167620129] [2023-11-21 22:18:57,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:57,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:18:57,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:57,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 22:18:57,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:57,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:57,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:18:57,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167620129] [2023-11-21 22:18:57,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167620129] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:18:57,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:18:57,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:18:57,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680888818] [2023-11-21 22:18:57,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:18:57,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-21 22:18:57,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:18:57,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-21 22:18:57,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-21 22:18:57,475 INFO L87 Difference]: Start difference. First operand has 64 states, 41 states have (on average 1.4634146341463414) internal successors, (60), 50 states have internal predecessors, (60), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2023-11-21 22:18:57,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:18:57,591 INFO L93 Difference]: Finished difference Result 126 states and 173 transitions. [2023-11-21 22:18:57,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 22:18:57,594 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 17 [2023-11-21 22:18:57,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:18:57,605 INFO L225 Difference]: With dead ends: 126 [2023-11-21 22:18:57,605 INFO L226 Difference]: Without dead ends: 59 [2023-11-21 22:18:57,611 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 [2023-11-21 22:18:57,617 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:18:57,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 65 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:18:57,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-21 22:18:57,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-11-21 22:18:57,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 38 states have (on average 1.368421052631579) internal successors, (52), 46 states have internal predecessors, (52), 13 states have call successors, (13), 8 states have call predecessors, (13), 7 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-21 22:18:57,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 77 transitions. [2023-11-21 22:18:57,683 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 77 transitions. Word has length 17 [2023-11-21 22:18:57,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:18:57,684 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 77 transitions. [2023-11-21 22:18:57,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2023-11-21 22:18:57,685 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 77 transitions. [2023-11-21 22:18:57,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-21 22:18:57,690 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:18:57,690 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:18:57,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:18:57,691 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:18:57,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:57,692 INFO L85 PathProgramCache]: Analyzing trace with hash 157435579, now seen corresponding path program 1 times [2023-11-21 22:18:57,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:18:57,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613529756] [2023-11-21 22:18:57,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:57,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:18:57,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:57,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:18:57,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:57,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:57,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:18:57,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613529756] [2023-11-21 22:18:57,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613529756] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:18:57,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:18:57,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:18:57,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344296686] [2023-11-21 22:18:57,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:18:57,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:18:57,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:18:57,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:18:57,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:18:57,879 INFO L87 Difference]: Start difference. First operand 59 states and 77 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-11-21 22:18:57,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:18:57,923 INFO L93 Difference]: Finished difference Result 90 states and 116 transitions. [2023-11-21 22:18:57,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:18:57,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 18 [2023-11-21 22:18:57,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:18:57,925 INFO L225 Difference]: With dead ends: 90 [2023-11-21 22:18:57,925 INFO L226 Difference]: Without dead ends: 51 [2023-11-21 22:18:57,926 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 [2023-11-21 22:18:57,928 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 14 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:18:57,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 86 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:18:57,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-21 22:18:57,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-11-21 22:18:57,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 33 states have (on average 1.393939393939394) internal successors, (46), 41 states have internal predecessors, (46), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (10), 7 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-21 22:18:57,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2023-11-21 22:18:57,938 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 18 [2023-11-21 22:18:57,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:18:57,939 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2023-11-21 22:18:57,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-11-21 22:18:57,939 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2023-11-21 22:18:57,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-21 22:18:57,941 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:18:57,941 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] [2023-11-21 22:18:57,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:18:57,941 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:18:57,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:57,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1766150271, now seen corresponding path program 1 times [2023-11-21 22:18:57,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:18:57,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319416050] [2023-11-21 22:18:57,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:57,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:18:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:58,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 22:18:58,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:58,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:58,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:18:58,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319416050] [2023-11-21 22:18:58,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319416050] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:18:58,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:18:58,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:18:58,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430135991] [2023-11-21 22:18:58,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:18:58,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:18:58,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:18:58,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:18:58,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:18:58,088 INFO L87 Difference]: Start difference. First operand 51 states and 66 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2023-11-21 22:18:58,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:18:58,155 INFO L93 Difference]: Finished difference Result 149 states and 195 transitions. [2023-11-21 22:18:58,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:18:58,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 21 [2023-11-21 22:18:58,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:18:58,158 INFO L225 Difference]: With dead ends: 149 [2023-11-21 22:18:58,158 INFO L226 Difference]: Without dead ends: 100 [2023-11-21 22:18:58,159 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 [2023-11-21 22:18:58,161 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 60 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:18:58,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 111 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:18:58,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-11-21 22:18:58,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 97. [2023-11-21 22:18:58,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 62 states have (on average 1.403225806451613) internal successors, (87), 77 states have internal predecessors, (87), 20 states have call successors, (20), 14 states have call predecessors, (20), 14 states have return successors, (20), 13 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-21 22:18:58,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 127 transitions. [2023-11-21 22:18:58,182 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 127 transitions. Word has length 21 [2023-11-21 22:18:58,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:18:58,183 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 127 transitions. [2023-11-21 22:18:58,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2023-11-21 22:18:58,183 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 127 transitions. [2023-11-21 22:18:58,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-21 22:18:58,190 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:18:58,190 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] [2023-11-21 22:18:58,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:18:58,190 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:18:58,191 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:58,191 INFO L85 PathProgramCache]: Analyzing trace with hash -104436854, now seen corresponding path program 1 times [2023-11-21 22:18:58,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:18:58,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427187680] [2023-11-21 22:18:58,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:58,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:18:58,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:58,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-21 22:18:58,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:58,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:18:58,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:18:58,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427187680] [2023-11-21 22:18:58,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427187680] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:18:58,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:18:58,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:18:58,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574412230] [2023-11-21 22:18:58,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:18:58,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:18:58,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:18:58,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:18:58,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:18:58,309 INFO L87 Difference]: Start difference. First operand 97 states and 127 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2023-11-21 22:18:58,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:18:58,401 INFO L93 Difference]: Finished difference Result 192 states and 256 transitions. [2023-11-21 22:18:58,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:18:58,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 24 [2023-11-21 22:18:58,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:18:58,412 INFO L225 Difference]: With dead ends: 192 [2023-11-21 22:18:58,412 INFO L226 Difference]: Without dead ends: 190 [2023-11-21 22:18:58,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:18:58,421 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 42 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:18:58,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 97 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:18:58,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-11-21 22:18:58,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2023-11-21 22:18:58,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 121 states have (on average 1.396694214876033) internal successors, (169), 150 states have internal predecessors, (169), 40 states have call successors, (40), 28 states have call predecessors, (40), 28 states have return successors, (44), 26 states have call predecessors, (44), 40 states have call successors, (44) [2023-11-21 22:18:58,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 253 transitions. [2023-11-21 22:18:58,490 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 253 transitions. Word has length 24 [2023-11-21 22:18:58,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:18:58,491 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 253 transitions. [2023-11-21 22:18:58,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2023-11-21 22:18:58,491 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 253 transitions. [2023-11-21 22:18:58,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-21 22:18:58,501 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:18:58,501 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] [2023-11-21 22:18:58,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 22:18:58,502 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:18:58,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:58,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1903150530, now seen corresponding path program 1 times [2023-11-21 22:18:58,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:18:58,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063100324] [2023-11-21 22:18:58,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:58,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:18:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:58,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-21 22:18:58,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:58,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:18:58,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:58,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 22:18:58,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:58,751 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 22:18:58,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:18:58,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063100324] [2023-11-21 22:18:58,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063100324] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:18:58,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:18:58,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 22:18:58,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934301512] [2023-11-21 22:18:58,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:18:58,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:18:58,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:18:58,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:18:58,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:18:58,757 INFO L87 Difference]: Start difference. First operand 190 states and 253 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-21 22:18:59,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:18:59,224 INFO L93 Difference]: Finished difference Result 663 states and 914 transitions. [2023-11-21 22:18:59,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-21 22:18:59,226 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2023-11-21 22:18:59,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:18:59,238 INFO L225 Difference]: With dead ends: 663 [2023-11-21 22:18:59,238 INFO L226 Difference]: Without dead ends: 475 [2023-11-21 22:18:59,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2023-11-21 22:18:59,249 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 134 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:18:59,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 186 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:18:59,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2023-11-21 22:18:59,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 410. [2023-11-21 22:18:59,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 277 states have (on average 1.296028880866426) internal successors, (359), 306 states have internal predecessors, (359), 64 states have call successors, (64), 58 states have call predecessors, (64), 68 states have return successors, (100), 64 states have call predecessors, (100), 64 states have call successors, (100) [2023-11-21 22:18:59,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 523 transitions. [2023-11-21 22:18:59,326 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 523 transitions. Word has length 45 [2023-11-21 22:18:59,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:18:59,327 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 523 transitions. [2023-11-21 22:18:59,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-21 22:18:59,327 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 523 transitions. [2023-11-21 22:18:59,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-21 22:18:59,330 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:18:59,331 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-21 22:18:59,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 22:18:59,331 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:18:59,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:59,332 INFO L85 PathProgramCache]: Analyzing trace with hash -970782948, now seen corresponding path program 1 times [2023-11-21 22:18:59,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:18:59,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093039160] [2023-11-21 22:18:59,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:59,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:18:59,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:59,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-21 22:18:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:59,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:18:59,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:59,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-21 22:18:59,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:59,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-21 22:18:59,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:59,454 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 22:18:59,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:18:59,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093039160] [2023-11-21 22:18:59,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093039160] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:18:59,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:18:59,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 22:18:59,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44079012] [2023-11-21 22:18:59,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:18:59,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:18:59,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:18:59,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:18:59,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:18:59,457 INFO L87 Difference]: Start difference. First operand 410 states and 523 transitions. Second operand has 6 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-21 22:18:59,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:18:59,729 INFO L93 Difference]: Finished difference Result 656 states and 836 transitions. [2023-11-21 22:18:59,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 22:18:59,730 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 53 [2023-11-21 22:18:59,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:18:59,734 INFO L225 Difference]: With dead ends: 656 [2023-11-21 22:18:59,734 INFO L226 Difference]: Without dead ends: 248 [2023-11-21 22:18:59,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-21 22:18:59,738 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 114 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:18:59,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 159 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:18:59,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2023-11-21 22:18:59,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 231. [2023-11-21 22:18:59,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 157 states have (on average 1.2802547770700636) internal successors, (201), 173 states have internal predecessors, (201), 35 states have call successors, (35), 33 states have call predecessors, (35), 38 states have return successors, (53), 36 states have call predecessors, (53), 35 states have call successors, (53) [2023-11-21 22:18:59,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 289 transitions. [2023-11-21 22:18:59,789 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 289 transitions. Word has length 53 [2023-11-21 22:18:59,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:18:59,790 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 289 transitions. [2023-11-21 22:18:59,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-21 22:18:59,790 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 289 transitions. [2023-11-21 22:18:59,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-21 22:18:59,792 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:18:59,792 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-21 22:18:59,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 22:18:59,792 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:18:59,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:18:59,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1484720284, now seen corresponding path program 1 times [2023-11-21 22:18:59,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:18:59,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770984099] [2023-11-21 22:18:59,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:59,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:18:59,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:59,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 22:18:59,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:59,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:18:59,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:59,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-21 22:18:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:59,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-21 22:18:59,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:59,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-21 22:18:59,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:18:59,909 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:18:59,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:18:59,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770984099] [2023-11-21 22:18:59,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770984099] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:18:59,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349248614] [2023-11-21 22:18:59,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:18:59,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:18:59,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:18:59,913 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:18:59,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 22:19:00,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:00,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-21 22:19:00,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:19:00,628 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:19:00,628 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:19:00,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349248614] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:19:00,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:19:00,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 14 [2023-11-21 22:19:00,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144848090] [2023-11-21 22:19:00,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:19:00,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-21 22:19:00,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:19:00,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-21 22:19:00,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-11-21 22:19:00,635 INFO L87 Difference]: Start difference. First operand 231 states and 289 transitions. Second operand has 10 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-21 22:19:01,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:19:01,154 INFO L93 Difference]: Finished difference Result 557 states and 709 transitions. [2023-11-21 22:19:01,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-21 22:19:01,155 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 4 states have call successors, (5) Word has length 55 [2023-11-21 22:19:01,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:19:01,158 INFO L225 Difference]: With dead ends: 557 [2023-11-21 22:19:01,158 INFO L226 Difference]: Without dead ends: 328 [2023-11-21 22:19:01,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2023-11-21 22:19:01,160 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 220 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 22:19:01,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 310 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 22:19:01,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2023-11-21 22:19:01,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 274. [2023-11-21 22:19:01,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 190 states have (on average 1.2789473684210526) internal successors, (243), 207 states have internal predecessors, (243), 40 states have call successors, (40), 40 states have call predecessors, (40), 43 states have return successors, (58), 40 states have call predecessors, (58), 40 states have call successors, (58) [2023-11-21 22:19:01,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 341 transitions. [2023-11-21 22:19:01,203 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 341 transitions. Word has length 55 [2023-11-21 22:19:01,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:19:01,204 INFO L495 AbstractCegarLoop]: Abstraction has 274 states and 341 transitions. [2023-11-21 22:19:01,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-21 22:19:01,204 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 341 transitions. [2023-11-21 22:19:01,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-21 22:19:01,206 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:19:01,206 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] [2023-11-21 22:19:01,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 22:19:01,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-21 22:19:01,433 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:19:01,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:19:01,433 INFO L85 PathProgramCache]: Analyzing trace with hash -957271577, now seen corresponding path program 1 times [2023-11-21 22:19:01,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:19:01,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245319438] [2023-11-21 22:19:01,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:19:01,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:19:01,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:01,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:19:01,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:01,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-21 22:19:01,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:01,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:01,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-21 22:19:01,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:01,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-21 22:19:01,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:01,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-21 22:19:01,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:01,614 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:19:01,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:19:01,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245319438] [2023-11-21 22:19:01,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245319438] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:19:01,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827618666] [2023-11-21 22:19:01,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:19:01,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:19:01,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:19:01,617 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:19:01,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 22:19:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:01,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-21 22:19:01,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:19:01,759 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-21 22:19:01,759 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:19:01,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827618666] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:19:01,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:19:01,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2023-11-21 22:19:01,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247116792] [2023-11-21 22:19:01,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:19:01,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:19:01,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:19:01,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:19:01,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:19:01,763 INFO L87 Difference]: Start difference. First operand 274 states and 341 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-21 22:19:01,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:19:01,859 INFO L93 Difference]: Finished difference Result 530 states and 657 transitions. [2023-11-21 22:19:01,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:19:01,859 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 58 [2023-11-21 22:19:01,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:19:01,862 INFO L225 Difference]: With dead ends: 530 [2023-11-21 22:19:01,863 INFO L226 Difference]: Without dead ends: 258 [2023-11-21 22:19:01,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:19:01,865 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 43 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:19:01,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 140 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:19:01,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2023-11-21 22:19:01,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 241. [2023-11-21 22:19:01,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 167 states have (on average 1.2694610778443114) internal successors, (212), 182 states have internal predecessors, (212), 35 states have call successors, (35), 35 states have call predecessors, (35), 38 states have return successors, (49), 35 states have call predecessors, (49), 35 states have call successors, (49) [2023-11-21 22:19:01,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 296 transitions. [2023-11-21 22:19:01,915 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 296 transitions. Word has length 58 [2023-11-21 22:19:01,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:19:01,916 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 296 transitions. [2023-11-21 22:19:01,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-21 22:19:01,916 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 296 transitions. [2023-11-21 22:19:01,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-21 22:19:01,919 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:19:01,919 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:19:01,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 22:19:02,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-21 22:19:02,132 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:19:02,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:19:02,133 INFO L85 PathProgramCache]: Analyzing trace with hash 496905751, now seen corresponding path program 1 times [2023-11-21 22:19:02,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:19:02,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939234797] [2023-11-21 22:19:02,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:19:02,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:19:02,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:02,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:19:02,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:02,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-21 22:19:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:02,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:02,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:02,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-21 22:19:02,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:02,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-21 22:19:02,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:02,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-21 22:19:02,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:02,305 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-21 22:19:02,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:19:02,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939234797] [2023-11-21 22:19:02,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939234797] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:19:02,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255115806] [2023-11-21 22:19:02,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:19:02,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:19:02,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:19:02,307 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:19:02,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 22:19:02,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:02,412 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 22:19:02,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:19:02,457 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:19:02,457 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:19:02,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255115806] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:19:02,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:19:02,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 8 [2023-11-21 22:19:02,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445166654] [2023-11-21 22:19:02,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:19:02,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:19:02,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:19:02,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:19:02,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:19:02,460 INFO L87 Difference]: Start difference. First operand 241 states and 296 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-21 22:19:02,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:19:02,526 INFO L93 Difference]: Finished difference Result 460 states and 566 transitions. [2023-11-21 22:19:02,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:19:02,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 60 [2023-11-21 22:19:02,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:19:02,530 INFO L225 Difference]: With dead ends: 460 [2023-11-21 22:19:02,530 INFO L226 Difference]: Without dead ends: 221 [2023-11-21 22:19:02,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:19:02,533 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 28 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:19:02,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 112 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:19:02,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-11-21 22:19:02,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 221. [2023-11-21 22:19:02,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 154 states have (on average 1.2467532467532467) internal successors, (192), 168 states have internal predecessors, (192), 32 states have call successors, (32), 32 states have call predecessors, (32), 34 states have return successors, (39), 32 states have call predecessors, (39), 32 states have call successors, (39) [2023-11-21 22:19:02,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 263 transitions. [2023-11-21 22:19:02,566 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 263 transitions. Word has length 60 [2023-11-21 22:19:02,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:19:02,567 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 263 transitions. [2023-11-21 22:19:02,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-21 22:19:02,567 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 263 transitions. [2023-11-21 22:19:02,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-21 22:19:02,568 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:19:02,569 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] [2023-11-21 22:19:02,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-21 22:19:02,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:19:02,784 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:19:02,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:19:02,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1266283905, now seen corresponding path program 1 times [2023-11-21 22:19:02,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:19:02,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191469436] [2023-11-21 22:19:02,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:19:02,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:19:02,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:03,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:19:03,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:03,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-21 22:19:03,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:03,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:03,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:03,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-21 22:19:03,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:03,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-21 22:19:03,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:03,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:19:03,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:03,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-21 22:19:03,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:03,481 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-21 22:19:03,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:19:03,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191469436] [2023-11-21 22:19:03,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191469436] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:19:03,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [620409916] [2023-11-21 22:19:03,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:19:03,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:19:03,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:19:03,483 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:19:03,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 22:19:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:03,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-21 22:19:03,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:19:03,862 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:19:03,862 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:19:04,221 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-21 22:19:04,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [620409916] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:19:04,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:19:04,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 26 [2023-11-21 22:19:04,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992999029] [2023-11-21 22:19:04,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:19:04,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-21 22:19:04,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:19:04,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-21 22:19:04,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=508, Unknown=0, NotChecked=0, Total=650 [2023-11-21 22:19:04,225 INFO L87 Difference]: Start difference. First operand 221 states and 263 transitions. Second operand has 26 states, 22 states have (on average 4.2727272727272725) internal successors, (94), 21 states have internal predecessors, (94), 11 states have call successors, (21), 11 states have call predecessors, (21), 9 states have return successors, (18), 8 states have call predecessors, (18), 10 states have call successors, (18) [2023-11-21 22:19:06,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:19:06,171 INFO L93 Difference]: Finished difference Result 897 states and 1143 transitions. [2023-11-21 22:19:06,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-11-21 22:19:06,172 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 22 states have (on average 4.2727272727272725) internal successors, (94), 21 states have internal predecessors, (94), 11 states have call successors, (21), 11 states have call predecessors, (21), 9 states have return successors, (18), 8 states have call predecessors, (18), 10 states have call successors, (18) Word has length 63 [2023-11-21 22:19:06,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:19:06,178 INFO L225 Difference]: With dead ends: 897 [2023-11-21 22:19:06,179 INFO L226 Difference]: Without dead ends: 678 [2023-11-21 22:19:06,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 127 SyntacticMatches, 4 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1269 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1009, Invalid=3281, Unknown=0, NotChecked=0, Total=4290 [2023-11-21 22:19:06,183 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 564 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 1285 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 1573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 1285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:19:06,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 1066 Invalid, 1573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 1285 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-21 22:19:06,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2023-11-21 22:19:06,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 427. [2023-11-21 22:19:06,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 302 states have (on average 1.2682119205298013) internal successors, (383), 327 states have internal predecessors, (383), 63 states have call successors, (63), 59 states have call predecessors, (63), 61 states have return successors, (76), 63 states have call predecessors, (76), 63 states have call successors, (76) [2023-11-21 22:19:06,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 522 transitions. [2023-11-21 22:19:06,244 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 522 transitions. Word has length 63 [2023-11-21 22:19:06,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:19:06,245 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 522 transitions. [2023-11-21 22:19:06,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 22 states have (on average 4.2727272727272725) internal successors, (94), 21 states have internal predecessors, (94), 11 states have call successors, (21), 11 states have call predecessors, (21), 9 states have return successors, (18), 8 states have call predecessors, (18), 10 states have call successors, (18) [2023-11-21 22:19:06,246 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 522 transitions. [2023-11-21 22:19:06,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-21 22:19:06,248 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:19:06,249 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-21 22:19:06,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-21 22:19:06,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-21 22:19:06,464 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:19:06,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:19:06,465 INFO L85 PathProgramCache]: Analyzing trace with hash 827037720, now seen corresponding path program 1 times [2023-11-21 22:19:06,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:19:06,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363683708] [2023-11-21 22:19:06,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:19:06,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:19:06,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:06,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-21 22:19:06,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:06,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:06,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:06,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-21 22:19:06,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:06,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-21 22:19:06,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:06,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:06,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:06,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-21 22:19:06,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:06,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-21 22:19:06,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:06,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:19:06,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:06,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-21 22:19:06,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:06,779 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 42 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:19:06,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:19:06,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363683708] [2023-11-21 22:19:06,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363683708] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:19:06,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161520790] [2023-11-21 22:19:06,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:19:06,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:19:06,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:19:06,785 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:19:06,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-21 22:19:06,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:06,895 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-21 22:19:06,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:19:07,036 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-21 22:19:07,036 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:19:07,142 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-21 22:19:07,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161520790] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-21 22:19:07,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:19:07,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12, 5] total 16 [2023-11-21 22:19:07,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294572008] [2023-11-21 22:19:07,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:19:07,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:19:07,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:19:07,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:19:07,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-11-21 22:19:07,145 INFO L87 Difference]: Start difference. First operand 427 states and 522 transitions. Second operand has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-21 22:19:07,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:19:07,376 INFO L93 Difference]: Finished difference Result 1229 states and 1521 transitions. [2023-11-21 22:19:07,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 22:19:07,377 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 84 [2023-11-21 22:19:07,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:19:07,382 INFO L225 Difference]: With dead ends: 1229 [2023-11-21 22:19:07,383 INFO L226 Difference]: Without dead ends: 804 [2023-11-21 22:19:07,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2023-11-21 22:19:07,385 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 34 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:19:07,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 222 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 22:19:07,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2023-11-21 22:19:07,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 751. [2023-11-21 22:19:07,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 543 states have (on average 1.2559852670349907) internal successors, (682), 576 states have internal predecessors, (682), 106 states have call successors, (106), 98 states have call predecessors, (106), 101 states have return successors, (126), 105 states have call predecessors, (126), 106 states have call successors, (126) [2023-11-21 22:19:07,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 914 transitions. [2023-11-21 22:19:07,480 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 914 transitions. Word has length 84 [2023-11-21 22:19:07,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:19:07,481 INFO L495 AbstractCegarLoop]: Abstraction has 751 states and 914 transitions. [2023-11-21 22:19:07,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-21 22:19:07,481 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 914 transitions. [2023-11-21 22:19:07,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-21 22:19:07,485 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:19:07,485 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-21 22:19:07,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-21 22:19:07,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:19:07,700 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:19:07,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:19:07,701 INFO L85 PathProgramCache]: Analyzing trace with hash -766474761, now seen corresponding path program 1 times [2023-11-21 22:19:07,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:19:07,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734563580] [2023-11-21 22:19:07,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:19:07,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:19:07,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:07,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-21 22:19:07,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:07,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-21 22:19:07,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:07,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:07,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:07,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-21 22:19:07,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:07,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-21 22:19:07,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:07,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:07,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-21 22:19:07,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:07,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-21 22:19:07,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:07,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:19:07,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:07,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-21 22:19:07,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:07,984 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 42 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-21 22:19:07,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:19:07,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734563580] [2023-11-21 22:19:07,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734563580] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:19:07,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998129783] [2023-11-21 22:19:07,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:19:07,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:19:07,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:19:07,989 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:19:08,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-21 22:19:08,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:08,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-21 22:19:08,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:19:08,241 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 30 proven. 7 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-21 22:19:08,241 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:19:08,408 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 31 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-21 22:19:08,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998129783] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:19:08,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:19:08,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 20 [2023-11-21 22:19:08,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392765901] [2023-11-21 22:19:08,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:19:08,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-21 22:19:08,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:19:08,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-21 22:19:08,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2023-11-21 22:19:08,412 INFO L87 Difference]: Start difference. First operand 751 states and 914 transitions. Second operand has 20 states, 16 states have (on average 6.125) internal successors, (98), 12 states have internal predecessors, (98), 3 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (22), 7 states have call predecessors, (22), 3 states have call successors, (22) [2023-11-21 22:19:09,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:19:09,431 INFO L93 Difference]: Finished difference Result 1565 states and 1955 transitions. [2023-11-21 22:19:09,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-21 22:19:09,431 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 6.125) internal successors, (98), 12 states have internal predecessors, (98), 3 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (22), 7 states have call predecessors, (22), 3 states have call successors, (22) Word has length 87 [2023-11-21 22:19:09,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:19:09,439 INFO L225 Difference]: With dead ends: 1565 [2023-11-21 22:19:09,439 INFO L226 Difference]: Without dead ends: 1140 [2023-11-21 22:19:09,442 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=288, Invalid=1272, Unknown=0, NotChecked=0, Total=1560 [2023-11-21 22:19:09,442 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 230 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-21 22:19:09,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 306 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-21 22:19:09,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2023-11-21 22:19:09,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 790. [2023-11-21 22:19:09,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 556 states have (on average 1.2284172661870503) internal successors, (683), 602 states have internal predecessors, (683), 119 states have call successors, (119), 111 states have call predecessors, (119), 114 states have return successors, (139), 118 states have call predecessors, (139), 119 states have call successors, (139) [2023-11-21 22:19:09,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 941 transitions. [2023-11-21 22:19:09,550 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 941 transitions. Word has length 87 [2023-11-21 22:19:09,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:19:09,551 INFO L495 AbstractCegarLoop]: Abstraction has 790 states and 941 transitions. [2023-11-21 22:19:09,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 6.125) internal successors, (98), 12 states have internal predecessors, (98), 3 states have call successors, (23), 7 states have call predecessors, (23), 7 states have return successors, (22), 7 states have call predecessors, (22), 3 states have call successors, (22) [2023-11-21 22:19:09,552 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 941 transitions. [2023-11-21 22:19:09,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-21 22:19:09,557 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:19:09,558 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-21 22:19:09,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-21 22:19:09,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-21 22:19:09,772 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:19:09,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:19:09,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1360086007, now seen corresponding path program 2 times [2023-11-21 22:19:09,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:19:09,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57513274] [2023-11-21 22:19:09,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:19:09,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:19:09,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:10,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 22:19:10,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:10,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-21 22:19:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:10,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:10,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:10,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-21 22:19:10,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:10,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-21 22:19:10,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:10,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-21 22:19:10,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:10,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-21 22:19:10,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:10,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-11-21 22:19:10,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:10,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:19:10,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:10,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-21 22:19:10,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:10,595 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 31 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-21 22:19:10,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:19:10,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57513274] [2023-11-21 22:19:10,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57513274] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:19:10,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993545854] [2023-11-21 22:19:10,596 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:19:10,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:19:10,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:19:10,597 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:19:10,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-21 22:19:10,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 22:19:10,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:19:10,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-21 22:19:10,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:19:10,948 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-21 22:19:10,948 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:19:10,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993545854] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:19:10,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 22:19:10,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [19] total 24 [2023-11-21 22:19:10,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865283839] [2023-11-21 22:19:10,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:19:10,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 22:19:10,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:19:10,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 22:19:10,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2023-11-21 22:19:10,953 INFO L87 Difference]: Start difference. First operand 790 states and 941 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-21 22:19:11,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:19:11,345 INFO L93 Difference]: Finished difference Result 1888 states and 2285 transitions. [2023-11-21 22:19:11,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-21 22:19:11,345 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 87 [2023-11-21 22:19:11,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:19:11,346 INFO L225 Difference]: With dead ends: 1888 [2023-11-21 22:19:11,347 INFO L226 Difference]: Without dead ends: 0 [2023-11-21 22:19:11,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=628, Unknown=0, NotChecked=0, Total=756 [2023-11-21 22:19:11,354 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 128 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:19:11,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 384 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:19:11,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-21 22:19:11,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-21 22:19:11,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:19:11,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-21 22:19:11,356 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 87 [2023-11-21 22:19:11,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:19:11,357 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-21 22:19:11,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 4 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-21 22:19:11,357 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-21 22:19:11,357 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-21 22:19:11,360 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-21 22:19:11,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-21 22:19:11,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-21 22:19:11,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-21 22:19:19,140 INFO L899 garLoopResultBuilder]: For program point deactivatePumpEXIT(lines 229 236) no Hoare annotation was computed. [2023-11-21 22:19:19,141 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 229 236) the Hoare annotation is: (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (and (not (= ~waterLevel~0 1)) (<= ~waterLevel~0 1)) (not (= 1 ~systemActive~0)) (< |old(~pumpRunning~0)| 1)) [2023-11-21 22:19:19,141 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 162 168) no Hoare annotation was computed. [2023-11-21 22:19:19,141 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 162 168) the Hoare annotation is: true [2023-11-21 22:19:19,141 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 558 569) the Hoare annotation is: (let ((.cse0 (not (= ~pumpRunning~0 0))) (.cse3 (not (= ~methAndRunningLastTime~0 0))) (.cse1 (not (= 1 ~systemActive~0))) (.cse2 (= |old(~methaneLevelCritical~0)| ~methaneLevelCritical~0))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse0 .cse2 .cse3 (not (= 0 ~systemActive~0))) (or (< ~pumpRunning~0 1) .cse1 .cse2 (< ~waterLevel~0 2)))) [2023-11-21 22:19:19,142 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 558 569) no Hoare annotation was computed. [2023-11-21 22:19:19,142 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 570 578) the Hoare annotation is: true [2023-11-21 22:19:19,142 INFO L899 garLoopResultBuilder]: For program point isMethaneLevelCriticalEXIT(lines 570 578) no Hoare annotation was computed. [2023-11-21 22:19:19,142 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 356 385) no Hoare annotation was computed. [2023-11-21 22:19:19,142 INFO L899 garLoopResultBuilder]: For program point L381(lines 356 385) no Hoare annotation was computed. [2023-11-21 22:19:19,142 INFO L899 garLoopResultBuilder]: For program point L377(line 377) no Hoare annotation was computed. [2023-11-21 22:19:19,143 INFO L899 garLoopResultBuilder]: For program point L370(lines 370 374) no Hoare annotation was computed. [2023-11-21 22:19:19,143 INFO L902 garLoopResultBuilder]: At program point L370-1(lines 370 374) the Hoare annotation is: true [2023-11-21 22:19:19,143 INFO L902 garLoopResultBuilder]: At program point L366-2(lines 366 380) the Hoare annotation is: true [2023-11-21 22:19:19,143 INFO L902 garLoopResultBuilder]: At program point L362(line 362) the Hoare annotation is: true [2023-11-21 22:19:19,143 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 356 385) the Hoare annotation is: true [2023-11-21 22:19:19,143 INFO L899 garLoopResultBuilder]: For program point L362-1(line 362) no Hoare annotation was computed. [2023-11-21 22:19:19,144 INFO L899 garLoopResultBuilder]: For program point L478(lines 478 488) no Hoare annotation was computed. [2023-11-21 22:19:19,144 INFO L899 garLoopResultBuilder]: For program point L474(lines 474 491) no Hoare annotation was computed. [2023-11-21 22:19:19,144 INFO L899 garLoopResultBuilder]: For program point L474-1(lines 466 494) no Hoare annotation was computed. [2023-11-21 22:19:19,144 INFO L895 garLoopResultBuilder]: At program point L210(line 210) the Hoare annotation is: (let ((.cse1 (not (= 1 ~systemActive~0))) (.cse0 (not (= |old(~pumpRunning~0)| 0)))) (and (or .cse0 (not (= |old(~methAndRunningLastTime~0)| 0)) .cse1) (or .cse1 (< |old(~waterLevel~0)| 2) (< |old(~pumpRunning~0)| 1)) (or .cse0 (not (= 0 ~systemActive~0))))) [2023-11-21 22:19:19,144 INFO L895 garLoopResultBuilder]: At program point L206(line 206) the Hoare annotation is: (let ((.cse1 (not (= 1 ~systemActive~0))) (.cse0 (not (= |old(~pumpRunning~0)| 0)))) (and (or .cse0 (not (= |old(~methAndRunningLastTime~0)| 0)) .cse1) (or .cse1 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (= |timeShift_processEnvironment_~tmp~2#1| 1)) (< |old(~waterLevel~0)| 2) (< |old(~pumpRunning~0)| 1)) (or .cse0 (not (= 0 ~systemActive~0))))) [2023-11-21 22:19:19,145 INFO L899 garLoopResultBuilder]: For program point L479(lines 479 485) no Hoare annotation was computed. [2023-11-21 22:19:19,145 INFO L895 garLoopResultBuilder]: At program point L215(line 215) the Hoare annotation is: (let ((.cse1 (not (= 1 ~systemActive~0))) (.cse0 (not (= |old(~pumpRunning~0)| 0)))) (and (or .cse0 (not (= |old(~methAndRunningLastTime~0)| 0)) .cse1 (and (= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) (= |old(~waterLevel~0)| ~waterLevel~0))) (or .cse1 (< |old(~waterLevel~0)| 2) (< |old(~pumpRunning~0)| 1)) (or .cse0 (not (= 0 ~systemActive~0))))) [2023-11-21 22:19:19,145 INFO L899 garLoopResultBuilder]: For program point L215-1(lines 196 220) no Hoare annotation was computed. [2023-11-21 22:19:19,145 INFO L899 garLoopResultBuilder]: For program point L149-1(lines 149 155) no Hoare annotation was computed. [2023-11-21 22:19:19,146 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 138 161) the Hoare annotation is: (let ((.cse1 (not (= 1 ~systemActive~0))) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse2 (= ~pumpRunning~0 0)) (.cse3 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse4 (= |old(~methAndRunningLastTime~0)| ~methAndRunningLastTime~0))) (and (or .cse0 (not (= |old(~methAndRunningLastTime~0)| 0)) .cse1 (and .cse2 (= ~methAndRunningLastTime~0 0) .cse3)) (or .cse1 (< |old(~waterLevel~0)| 2) (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse3 .cse4) (< |old(~pumpRunning~0)| 1)) (or .cse0 (and .cse2 .cse3 .cse4) (not (= 0 ~systemActive~0))))) [2023-11-21 22:19:19,146 INFO L895 garLoopResultBuilder]: At program point L472(line 472) the Hoare annotation is: (let ((.cse2 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse4 (not (= 1 ~systemActive~0))) (.cse0 (= ~pumpRunning~0 0)) (.cse3 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (<= ~waterLevel~0 1)) (.cse5 (not (= 0 ~systemActive~0)))) (and (or (and .cse0 .cse1 .cse2) .cse3 (not (= |old(~methAndRunningLastTime~0)| 0)) .cse4 (and (<= 1 ~pumpRunning~0) (= ~methAndRunningLastTime~0 0) (<= 2 ~waterLevel~0) .cse2)) (or (and .cse0 (<= 1 ~waterLevel~0) (or (< ~waterLevel~0 |old(~waterLevel~0)|) .cse2)) .cse4 (< |old(~waterLevel~0)| 2) (< |old(~pumpRunning~0)| 1)) (or .cse3 (and .cse0 (<= |old(~waterLevel~0)| ~waterLevel~0)) .cse5) (or (< 1 |old(~waterLevel~0)|) .cse3 .cse1 .cse5))) [2023-11-21 22:19:19,146 INFO L899 garLoopResultBuilder]: For program point L472-1(line 472) no Hoare annotation was computed. [2023-11-21 22:19:19,146 INFO L899 garLoopResultBuilder]: For program point L142-1(lines 141 160) no Hoare annotation was computed. [2023-11-21 22:19:19,147 INFO L899 garLoopResultBuilder]: For program point L1005(line 1005) no Hoare annotation was computed. [2023-11-21 22:19:19,147 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 212) no Hoare annotation was computed. [2023-11-21 22:19:19,147 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 138 161) no Hoare annotation was computed. [2023-11-21 22:19:19,147 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 1005) no Hoare annotation was computed. [2023-11-21 22:19:19,147 INFO L899 garLoopResultBuilder]: For program point L200(lines 200 217) no Hoare annotation was computed. [2023-11-21 22:19:19,147 INFO L895 garLoopResultBuilder]: At program point L337(line 337) the Hoare annotation is: (and (<= 1 ~pumpRunning~0) (<= 2 ~waterLevel~0) (= 1 ~systemActive~0) (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) [2023-11-21 22:19:19,148 INFO L899 garLoopResultBuilder]: For program point L119(lines 56 123) no Hoare annotation was computed. [2023-11-21 22:19:19,148 INFO L899 garLoopResultBuilder]: For program point L86(lines 86 92) no Hoare annotation was computed. [2023-11-21 22:19:19,148 INFO L899 garLoopResultBuilder]: For program point L86-1(lines 86 92) no Hoare annotation was computed. [2023-11-21 22:19:19,148 INFO L895 garLoopResultBuilder]: At program point L78(line 78) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse2 (= ~pumpRunning~0 0)) (.cse3 (= ~methAndRunningLastTime~0 0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (<= 1 ~pumpRunning~0) (<= 2 ~waterLevel~0) .cse0 .cse1) (and .cse2 .cse3 .cse0 .cse1) (and .cse2 .cse3 .cse1 (= 0 ~systemActive~0)))) [2023-11-21 22:19:19,148 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-21 22:19:19,149 INFO L899 garLoopResultBuilder]: For program point L442(lines 442 449) no Hoare annotation was computed. [2023-11-21 22:19:19,149 INFO L899 garLoopResultBuilder]: For program point L442-2(lines 442 449) no Hoare annotation was computed. [2023-11-21 22:19:19,149 INFO L895 garLoopResultBuilder]: At program point L116(lines 65 117) the Hoare annotation is: false [2023-11-21 22:19:19,149 INFO L899 garLoopResultBuilder]: For program point L335(lines 335 341) no Hoare annotation was computed. [2023-11-21 22:19:19,149 INFO L899 garLoopResultBuilder]: For program point L335-1(lines 335 341) no Hoare annotation was computed. [2023-11-21 22:19:19,149 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-21 22:19:19,149 INFO L899 garLoopResultBuilder]: For program point L104(lines 104 110) no Hoare annotation was computed. [2023-11-21 22:19:19,150 INFO L895 garLoopResultBuilder]: At program point L104-2(lines 96 111) the Hoare annotation is: (let ((.cse2 (= ~pumpRunning~0 0)) (.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (<= 1 ~pumpRunning~0) (<= 2 ~waterLevel~0) .cse0 .cse1) (and .cse2 .cse1 (= 0 ~systemActive~0)) (and .cse2 (= ~methAndRunningLastTime~0 0) .cse0 .cse1))) [2023-11-21 22:19:19,150 INFO L899 garLoopResultBuilder]: For program point L67(lines 66 115) no Hoare annotation was computed. [2023-11-21 22:19:19,150 INFO L899 garLoopResultBuilder]: For program point L96(lines 96 111) no Hoare annotation was computed. [2023-11-21 22:19:19,150 INFO L895 garLoopResultBuilder]: At program point L88(line 88) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse2 (= ~pumpRunning~0 0)) (.cse3 (= ~methAndRunningLastTime~0 0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (<= 1 ~pumpRunning~0) (<= 2 ~waterLevel~0) .cse0 .cse1) (and .cse2 .cse3 .cse0 .cse1) (and .cse2 .cse3 .cse1 (= 0 ~systemActive~0)))) [2023-11-21 22:19:19,150 INFO L895 garLoopResultBuilder]: At program point L113(lines 66 115) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse2 (= ~pumpRunning~0 0)) (.cse3 (= ~methAndRunningLastTime~0 0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (<= 1 ~pumpRunning~0) (<= 2 ~waterLevel~0) .cse0 .cse1) (and .cse2 .cse3 .cse0 .cse1) (and .cse2 .cse3 .cse1 (= 0 ~systemActive~0)))) [2023-11-21 22:19:19,151 INFO L899 garLoopResultBuilder]: For program point L76(lines 76 82) no Hoare annotation was computed. [2023-11-21 22:19:19,151 INFO L899 garLoopResultBuilder]: For program point L76-1(lines 76 82) no Hoare annotation was computed. [2023-11-21 22:19:19,151 INFO L895 garLoopResultBuilder]: At program point L184(line 184) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= 1 ~systemActive~0))) (.cse2 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 .cse1 (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~1#1| 0)) .cse2) (or .cse0 .cse1 (< ~waterLevel~0 2) .cse2))) [2023-11-21 22:19:19,151 INFO L899 garLoopResultBuilder]: For program point L178(lines 178 186) no Hoare annotation was computed. [2023-11-21 22:19:19,151 INFO L899 garLoopResultBuilder]: For program point L174(lines 174 191) no Hoare annotation was computed. [2023-11-21 22:19:19,151 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 170 194) the Hoare annotation is: (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) (not (= 1 ~systemActive~0)) (not (= ~methAndRunningLastTime~0 0))) [2023-11-21 22:19:19,152 INFO L895 garLoopResultBuilder]: At program point L189(line 189) the Hoare annotation is: (or (not (= |old(~pumpRunning~0)| 0)) (not (= 1 ~systemActive~0)) (not (= ~methAndRunningLastTime~0 0))) [2023-11-21 22:19:19,152 INFO L899 garLoopResultBuilder]: For program point L189-1(lines 170 194) no Hoare annotation was computed. [2023-11-21 22:19:19,152 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 170 194) no Hoare annotation was computed. [2023-11-21 22:19:19,152 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 546 557) no Hoare annotation was computed. [2023-11-21 22:19:19,152 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 546 557) the Hoare annotation is: (let ((.cse0 (not (= ~pumpRunning~0 0))) (.cse3 (not (= ~methAndRunningLastTime~0 0))) (.cse1 (not (= 1 ~systemActive~0))) (.cse2 (= |old(~waterLevel~0)| ~waterLevel~0))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse0 .cse2 .cse3 (not (= 0 ~systemActive~0))) (or (< ~pumpRunning~0 1) .cse1 (< |old(~waterLevel~0)| 2) .cse2))) [2023-11-21 22:19:19,155 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:19:19,157 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 22:19:19,171 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 10:19:19 BoogieIcfgContainer [2023-11-21 22:19:19,171 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 22:19:19,172 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 22:19:19,172 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 22:19:19,172 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 22:19:19,173 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:18:57" (3/4) ... [2023-11-21 22:19:19,175 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-21 22:19:19,178 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2023-11-21 22:19:19,178 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2023-11-21 22:19:19,179 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2023-11-21 22:19:19,179 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2023-11-21 22:19:19,179 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2023-11-21 22:19:19,179 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2023-11-21 22:19:19,179 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2023-11-21 22:19:19,180 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2023-11-21 22:19:19,188 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 43 nodes and edges [2023-11-21 22:19:19,189 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-11-21 22:19:19,190 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-21 22:19:19,190 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-21 22:19:19,191 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-21 22:19:19,214 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!((\old(pumpRunning) == 0)) || !((\old(methAndRunningLastTime) == 0))) || !((1 == systemActive))) || (((pumpRunning == 0) && (methAndRunningLastTime == 0)) && (\old(waterLevel) == waterLevel))) && (((!((1 == systemActive)) || (\old(waterLevel) < 2)) || (((pumpRunning == \old(pumpRunning)) && (\old(waterLevel) == waterLevel)) && (\old(methAndRunningLastTime) == methAndRunningLastTime))) || (\old(pumpRunning) < 1))) && ((!((\old(pumpRunning) == 0)) || (((pumpRunning == 0) && (\old(waterLevel) == waterLevel)) && (\old(methAndRunningLastTime) == methAndRunningLastTime))) || !((0 == systemActive)))) [2023-11-21 22:19:19,270 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!((\old(pumpRunning) == 0)) || !((\old(methAndRunningLastTime) == 0))) || !((1 == systemActive))) || (((pumpRunning == 0) && (methAndRunningLastTime == 0)) && (\old(waterLevel) == waterLevel))) && (((!((1 == systemActive)) || (\old(waterLevel) < 2)) || (((pumpRunning == \old(pumpRunning)) && (\old(waterLevel) == waterLevel)) && (\old(methAndRunningLastTime) == methAndRunningLastTime))) || (\old(pumpRunning) < 1))) && ((!((\old(pumpRunning) == 0)) || (((pumpRunning == 0) && (\old(waterLevel) == waterLevel)) && (\old(methAndRunningLastTime) == methAndRunningLastTime))) || !((0 == systemActive)))) [2023-11-21 22:19:19,331 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/witness.graphml [2023-11-21 22:19:19,332 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/witness.yml [2023-11-21 22:19:19,332 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 22:19:19,333 INFO L158 Benchmark]: Toolchain (without parser) took 23679.10ms. Allocated memory was 153.1MB in the beginning and 388.0MB in the end (delta: 234.9MB). Free memory was 107.2MB in the beginning and 317.4MB in the end (delta: -210.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-21 22:19:19,333 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 117.4MB. Free memory is still 67.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:19:19,333 INFO L158 Benchmark]: CACSL2BoogieTranslator took 558.27ms. Allocated memory is still 153.1MB. Free memory was 106.7MB in the beginning and 86.8MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-21 22:19:19,334 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.11ms. Allocated memory is still 153.1MB. Free memory was 86.8MB in the beginning and 84.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:19:19,335 INFO L158 Benchmark]: Boogie Preprocessor took 47.59ms. Allocated memory is still 153.1MB. Free memory was 84.8MB in the beginning and 82.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:19:19,335 INFO L158 Benchmark]: RCFGBuilder took 724.80ms. Allocated memory is still 153.1MB. Free memory was 82.0MB in the beginning and 110.4MB in the end (delta: -28.4MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. [2023-11-21 22:19:19,336 INFO L158 Benchmark]: TraceAbstraction took 22105.22ms. Allocated memory was 153.1MB in the beginning and 388.0MB in the end (delta: 234.9MB). Free memory was 109.4MB in the beginning and 324.7MB in the end (delta: -215.3MB). Peak memory consumption was 223.6MB. Max. memory is 16.1GB. [2023-11-21 22:19:19,336 INFO L158 Benchmark]: Witness Printer took 160.08ms. Allocated memory is still 388.0MB. Free memory was 324.7MB in the beginning and 317.4MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-21 22:19:19,339 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 117.4MB. Free memory is still 67.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 558.27ms. Allocated memory is still 153.1MB. Free memory was 106.7MB in the beginning and 86.8MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.11ms. Allocated memory is still 153.1MB. Free memory was 86.8MB in the beginning and 84.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.59ms. Allocated memory is still 153.1MB. Free memory was 84.8MB in the beginning and 82.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 724.80ms. Allocated memory is still 153.1MB. Free memory was 82.0MB in the beginning and 110.4MB in the end (delta: -28.4MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. * TraceAbstraction took 22105.22ms. Allocated memory was 153.1MB in the beginning and 388.0MB in the end (delta: 234.9MB). Free memory was 109.4MB in the beginning and 324.7MB in the end (delta: -215.3MB). Peak memory consumption was 223.6MB. Max. memory is 16.1GB. * Witness Printer took 160.08ms. Allocated memory is still 388.0MB. Free memory was 324.7MB in the beginning and 317.4MB in the end (delta: 7.3MB). 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,"scenario.i","") [49] - GenericResultAtLocation [Line: 124]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [124] - GenericResultAtLocation [Line: 354]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [354] - GenericResultAtLocation [Line: 455]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [455] - GenericResultAtLocation [Line: 495]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [495] - GenericResultAtLocation [Line: 530]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [530] - GenericResultAtLocation [Line: 634]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [634] - GenericResultAtLocation [Line: 1000]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1000] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 1005]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 22.0s, OverallIterations: 13, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 5.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 7.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1651 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1611 mSDsluCounter, 3244 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2428 mSDsCounter, 636 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3596 IncrementalHoareTripleChecker+Invalid, 4232 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 636 mSolverCounterUnsat, 816 mSDtfsCounter, 3596 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1035 GetRequests, 828 SyntacticMatches, 7 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1905 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=790occurred in iteration=12, InterpolantAutomatonStates: 155, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 13 MinimizatonAttempts, 810 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 23 LocationsWithAnnotation, 1451 PreInvPairs, 1663 NumberOfFragments, 637 HoareAnnotationTreeSize, 1451 FomulaSimplifications, 38158 FormulaSimplificationTreeSizeReduction, 2.1s HoareSimplificationTime, 23 FomulaSimplificationsInter, 37859 FormulaSimplificationTreeSizeReductionInter, 5.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.2s InterpolantComputationTime, 1166 NumberOfCodeBlocks, 1166 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1377 ConstructedInterpolants, 0 QuantifiedInterpolants, 3501 SizeOfPredicates, 30 NumberOfNonLiveVariables, 2083 ConjunctsInSsa, 95 ConjunctsInUnsatCore, 23 InterpolantComputations, 11 PerfectInterpolantSequences, 632/706 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 366]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 66]: Loop Invariant Derived loop invariant: ((((((1 <= pumpRunning) && (2 <= waterLevel)) && (1 == systemActive)) && (splverifierCounter == 0)) || ((((pumpRunning == 0) && (methAndRunningLastTime == 0)) && (1 == systemActive)) && (splverifierCounter == 0))) || ((((pumpRunning == 0) && (methAndRunningLastTime == 0)) && (splverifierCounter == 0)) && (0 == systemActive))) - InvariantResult [Line: 65]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 138]: Loop Invariant Derived loop invariant: (((((!((\old(pumpRunning) == 0)) || !((\old(methAndRunningLastTime) == 0))) || !((1 == systemActive))) || (((pumpRunning == 0) && (methAndRunningLastTime == 0)) && (\old(waterLevel) == waterLevel))) && (((!((1 == systemActive)) || (\old(waterLevel) < 2)) || (((pumpRunning == \old(pumpRunning)) && (\old(waterLevel) == waterLevel)) && (\old(methAndRunningLastTime) == methAndRunningLastTime))) || (\old(pumpRunning) < 1))) && ((!((\old(pumpRunning) == 0)) || (((pumpRunning == 0) && (\old(waterLevel) == waterLevel)) && (\old(methAndRunningLastTime) == methAndRunningLastTime))) || !((0 == systemActive)))) RESULT: Ultimate proved your program to be correct! [2023-11-21 22:19:19,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d709a41a-c063-4f95-917a-09a31a26d148/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE