./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product48.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product48.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 797436b26f0180d1dd4048b2036765c1f76ffc9f34d72e35837e9efcc5780486 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:22:24,775 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:22:24,941 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:22:24,950 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:22:24,951 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:22:24,989 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:22:24,990 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:22:24,991 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:22:24,992 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:22:24,997 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:22:24,997 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:22:24,998 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:22:24,998 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:22:25,000 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:22:25,001 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:22:25,002 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:22:25,002 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:22:25,002 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:22:25,003 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:22:25,003 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:22:25,004 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:22:25,004 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:22:25,006 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:22:25,006 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:22:25,006 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:22:25,007 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:22:25,007 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:22:25,008 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:22:25,008 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:22:25,008 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:22:25,010 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:22:25,010 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:22:25,010 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:22:25,010 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:22:25,010 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:22:25,011 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:22:25,011 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:22:25,011 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:22:25,011 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:22:25,012 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:22:25,012 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:22:25,012 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:22:25,012 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:22:25,013 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:22:25,013 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:22:25,013 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:22:25,013 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:22:25,014 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 797436b26f0180d1dd4048b2036765c1f76ffc9f34d72e35837e9efcc5780486 [2023-11-23 21:22:25,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:22:25,436 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:22:25,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:22:25,443 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:22:25,443 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:22:25,445 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/product-lines/minepump_spec2_product48.cil.c [2023-11-23 21:22:28,620 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:22:28,906 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:22:28,906 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/sv-benchmarks/c/product-lines/minepump_spec2_product48.cil.c [2023-11-23 21:22:28,942 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire/data/d47a02390/146d25e5aa6649fbb64d7d32534cee64/FLAG354f5873c [2023-11-23 21:22:28,958 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire/data/d47a02390/146d25e5aa6649fbb64d7d32534cee64 [2023-11-23 21:22:28,960 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:22:28,962 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:22:28,963 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:22:28,964 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:22:28,972 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:22:28,973 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:22:28" (1/1) ... [2023-11-23 21:22:28,975 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4230adf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:28, skipping insertion in model container [2023-11-23 21:22:28,975 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:22:28" (1/1) ... [2023-11-23 21:22:29,031 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:22:29,429 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_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/sv-benchmarks/c/product-lines/minepump_spec2_product48.cil.c[17766,17779] [2023-11-23 21:22:29,462 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:22:29,477 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:22:29,489 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [49] [2023-11-23 21:22:29,491 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [150] [2023-11-23 21:22:29,492 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [188] [2023-11-23 21:22:29,492 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [261] [2023-11-23 21:22:29,493 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [484] [2023-11-23 21:22:29,493 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [524] [2023-11-23 21:22:29,493 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [890] [2023-11-23 21:22:29,494 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [899] [2023-11-23 21:22:29,564 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_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/sv-benchmarks/c/product-lines/minepump_spec2_product48.cil.c[17766,17779] [2023-11-23 21:22:29,577 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:22:29,618 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:22:29,618 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:29 WrapperNode [2023-11-23 21:22:29,618 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:22:29,620 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:22:29,620 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:22:29,620 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:22:29,628 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:29" (1/1) ... [2023-11-23 21:22:29,653 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:29" (1/1) ... [2023-11-23 21:22:29,698 INFO L138 Inliner]: procedures = 57, calls = 103, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 199 [2023-11-23 21:22:29,698 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:22:29,699 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:22:29,699 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:22:29,700 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:22:29,710 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:29" (1/1) ... [2023-11-23 21:22:29,710 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:29" (1/1) ... [2023-11-23 21:22:29,713 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:29" (1/1) ... [2023-11-23 21:22:29,713 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:29" (1/1) ... [2023-11-23 21:22:29,733 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:29" (1/1) ... [2023-11-23 21:22:29,738 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:29" (1/1) ... [2023-11-23 21:22:29,739 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:29" (1/1) ... [2023-11-23 21:22:29,741 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:29" (1/1) ... [2023-11-23 21:22:29,751 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:22:29,752 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:22:29,753 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:22:29,753 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:22:29,755 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:29" (1/1) ... [2023-11-23 21:22:29,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:22:29,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:22:29,796 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:22:29,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:22:29,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:22:29,838 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-11-23 21:22:29,838 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-11-23 21:22:29,838 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-23 21:22:29,838 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-23 21:22:29,838 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-23 21:22:29,839 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-23 21:22:29,839 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-11-23 21:22:29,839 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-11-23 21:22:29,839 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-11-23 21:22:29,839 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-11-23 21:22:29,840 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2023-11-23 21:22:29,840 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2023-11-23 21:22:29,840 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-11-23 21:22:29,840 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-11-23 21:22:29,840 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-11-23 21:22:29,841 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-11-23 21:22:29,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:22:29,841 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-11-23 21:22:29,841 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-11-23 21:22:29,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:22:29,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:22:29,922 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:22:29,925 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:22:30,229 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:22:30,391 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:22:30,391 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 21:22:30,393 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:22:30 BoogieIcfgContainer [2023-11-23 21:22:30,393 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:22:30,397 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:22:30,397 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:22:30,402 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:22:30,402 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:22:28" (1/3) ... [2023-11-23 21:22:30,403 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@541d78a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:22:30, skipping insertion in model container [2023-11-23 21:22:30,404 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:22:29" (2/3) ... [2023-11-23 21:22:30,404 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@541d78a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:22:30, skipping insertion in model container [2023-11-23 21:22:30,404 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:22:30" (3/3) ... [2023-11-23 21:22:30,406 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product48.cil.c [2023-11-23 21:22:30,433 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:22:30,434 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:22:30,547 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:22:30,558 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=FINITE_AUTOMATA, 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;@2310a3d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:22:30,559 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:22:30,565 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 54 states have internal predecessors, (64), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-23 21:22:30,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-23 21:22:30,582 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:30,584 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:22:30,585 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:22:30,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:30,594 INFO L85 PathProgramCache]: Analyzing trace with hash 410527053, now seen corresponding path program 1 times [2023-11-23 21:22:30,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:22:30,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423175712] [2023-11-23 21:22:30,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:30,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:22:30,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:30,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:22:30,939 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:22:30,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423175712] [2023-11-23 21:22:30,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423175712] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:22:30,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:22:30,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:22:30,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171419230] [2023-11-23 21:22:30,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:22:30,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:22:30,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:22:31,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:22:31,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:22:31,024 INFO L87 Difference]: Start difference. First operand has 72 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 54 states have internal predecessors, (64), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) 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) [2023-11-23 21:22:31,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:31,171 INFO L93 Difference]: Finished difference Result 142 states and 193 transitions. [2023-11-23 21:22:31,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:22:31,174 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 [2023-11-23 21:22:31,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:31,187 INFO L225 Difference]: With dead ends: 142 [2023-11-23 21:22:31,188 INFO L226 Difference]: Without dead ends: 67 [2023-11-23 21:22:31,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:22:31,201 INFO L413 NwaCegarLoop]: 75 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, 75 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 [2023-11-23 21:22:31,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 75 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:22:31,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-11-23 21:22:31,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2023-11-23 21:22:31,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 50 states have internal predecessors, (56), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-23 21:22:31,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 87 transitions. [2023-11-23 21:22:31,284 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 87 transitions. Word has length 17 [2023-11-23 21:22:31,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:31,285 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 87 transitions. [2023-11-23 21:22:31,285 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) [2023-11-23 21:22:31,286 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 87 transitions. [2023-11-23 21:22:31,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-23 21:22:31,289 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:31,289 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:22:31,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:22:31,290 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:22:31,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:31,291 INFO L85 PathProgramCache]: Analyzing trace with hash -353929347, now seen corresponding path program 1 times [2023-11-23 21:22:31,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:22:31,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082769349] [2023-11-23 21:22:31,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:31,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:22:31,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:31,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:22:31,477 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:22:31,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082769349] [2023-11-23 21:22:31,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082769349] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:22:31,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:22:31,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:22:31,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651409765] [2023-11-23 21:22:31,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:22:31,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:22:31,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:22:31,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:22:31,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:22:31,486 INFO L87 Difference]: Start difference. First operand 67 states and 87 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) [2023-11-23 21:22:31,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:31,563 INFO L93 Difference]: Finished difference Result 106 states and 136 transitions. [2023-11-23 21:22:31,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:22:31,564 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 [2023-11-23 21:22:31,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:31,565 INFO L225 Difference]: With dead ends: 106 [2023-11-23 21:22:31,567 INFO L226 Difference]: Without dead ends: 59 [2023-11-23 21:22:31,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:22:31,570 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 14 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 106 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 [2023-11-23 21:22:31,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 106 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:22:31,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-23 21:22:31,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-11-23 21:22:31,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 45 states have internal predecessors, (50), 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) [2023-11-23 21:22:31,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 76 transitions. [2023-11-23 21:22:31,585 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 76 transitions. Word has length 18 [2023-11-23 21:22:31,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:31,585 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 76 transitions. [2023-11-23 21:22:31,585 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) [2023-11-23 21:22:31,585 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 76 transitions. [2023-11-23 21:22:31,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-23 21:22:31,587 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:31,587 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] [2023-11-23 21:22:31,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:22:31,587 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:22:31,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:31,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1315442762, now seen corresponding path program 1 times [2023-11-23 21:22:31,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:22:31,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703936047] [2023-11-23 21:22:31,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:31,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:22:31,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:31,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:22:31,732 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:22:31,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703936047] [2023-11-23 21:22:31,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703936047] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:22:31,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:22:31,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:22:31,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419783359] [2023-11-23 21:22:31,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:22:31,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:22:31,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:22:31,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:22:31,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:22:31,735 INFO L87 Difference]: Start difference. First operand 59 states and 76 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 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) [2023-11-23 21:22:31,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:31,837 INFO L93 Difference]: Finished difference Result 150 states and 194 transitions. [2023-11-23 21:22:31,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:22:31,838 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 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 [2023-11-23 21:22:31,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:31,840 INFO L225 Difference]: With dead ends: 150 [2023-11-23 21:22:31,840 INFO L226 Difference]: Without dead ends: 93 [2023-11-23 21:22:31,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:22:31,848 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 99 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:31,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 151 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:22:31,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-11-23 21:22:31,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 90. [2023-11-23 21:22:31,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 58 states have (on average 1.3620689655172413) internal successors, (79), 69 states have internal predecessors, (79), 18 states have call successors, (18), 13 states have call predecessors, (18), 13 states have return successors, (19), 14 states have call predecessors, (19), 18 states have call successors, (19) [2023-11-23 21:22:31,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 116 transitions. [2023-11-23 21:22:31,873 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 116 transitions. Word has length 21 [2023-11-23 21:22:31,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:31,873 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 116 transitions. [2023-11-23 21:22:31,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 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) [2023-11-23 21:22:31,874 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 116 transitions. [2023-11-23 21:22:31,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-23 21:22:31,875 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:31,876 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] [2023-11-23 21:22:31,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:22:31,876 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:22:31,877 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:31,877 INFO L85 PathProgramCache]: Analyzing trace with hash 186999119, now seen corresponding path program 1 times [2023-11-23 21:22:31,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:22:31,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28996958] [2023-11-23 21:22:31,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:31,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:22:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:32,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:22:32,061 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:22:32,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28996958] [2023-11-23 21:22:32,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28996958] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:22:32,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:22:32,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:22:32,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921577380] [2023-11-23 21:22:32,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:22:32,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:22:32,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:22:32,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:22:32,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:22:32,067 INFO L87 Difference]: Start difference. First operand 90 states and 116 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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) [2023-11-23 21:22:32,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:32,216 INFO L93 Difference]: Finished difference Result 216 states and 284 transitions. [2023-11-23 21:22:32,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:22:32,217 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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 [2023-11-23 21:22:32,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:32,221 INFO L225 Difference]: With dead ends: 216 [2023-11-23 21:22:32,224 INFO L226 Difference]: Without dead ends: 128 [2023-11-23 21:22:32,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:22:32,230 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 41 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:32,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 162 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:22:32,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-11-23 21:22:32,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 124. [2023-11-23 21:22:32,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 82 states have (on average 1.2804878048780488) internal successors, (105), 92 states have internal predecessors, (105), 22 states have call successors, (22), 19 states have call predecessors, (22), 19 states have return successors, (28), 21 states have call predecessors, (28), 22 states have call successors, (28) [2023-11-23 21:22:32,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 155 transitions. [2023-11-23 21:22:32,288 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 155 transitions. Word has length 24 [2023-11-23 21:22:32,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:32,290 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 155 transitions. [2023-11-23 21:22:32,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 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) [2023-11-23 21:22:32,291 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 155 transitions. [2023-11-23 21:22:32,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-23 21:22:32,300 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:32,301 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:22:32,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:22:32,301 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:22:32,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:32,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1783775523, now seen corresponding path program 1 times [2023-11-23 21:22:32,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:22:32,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015692551] [2023-11-23 21:22:32,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:32,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:22:32,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:32,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:22:32,451 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:22:32,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015692551] [2023-11-23 21:22:32,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015692551] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:22:32,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:22:32,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:22:32,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046588060] [2023-11-23 21:22:32,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:22:32,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:22:32,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:22:32,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:22:32,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:22:32,454 INFO L87 Difference]: Start difference. First operand 124 states and 155 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 21:22:32,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:32,522 INFO L93 Difference]: Finished difference Result 210 states and 269 transitions. [2023-11-23 21:22:32,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:22:32,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 37 [2023-11-23 21:22:32,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:32,538 INFO L225 Difference]: With dead ends: 210 [2023-11-23 21:22:32,538 INFO L226 Difference]: Without dead ends: 208 [2023-11-23 21:22:32,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:22:32,543 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 52 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:32,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 128 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:22:32,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-11-23 21:22:32,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 198. [2023-11-23 21:22:32,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 128 states have (on average 1.2734375) internal successors, (163), 144 states have internal predecessors, (163), 38 states have call successors, (38), 32 states have call predecessors, (38), 31 states have return successors, (54), 34 states have call predecessors, (54), 38 states have call successors, (54) [2023-11-23 21:22:32,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 255 transitions. [2023-11-23 21:22:32,587 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 255 transitions. Word has length 37 [2023-11-23 21:22:32,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:32,587 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 255 transitions. [2023-11-23 21:22:32,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 21:22:32,588 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 255 transitions. [2023-11-23 21:22:32,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-23 21:22:32,592 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:32,592 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:22:32,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:22:32,593 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:22:32,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:32,594 INFO L85 PathProgramCache]: Analyzing trace with hash -2035445862, now seen corresponding path program 1 times [2023-11-23 21:22:32,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:22:32,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143146756] [2023-11-23 21:22:32,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:32,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:22:32,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:33,124 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 21:22:33,124 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:22:33,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143146756] [2023-11-23 21:22:33,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143146756] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:22:33,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254701019] [2023-11-23 21:22:33,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:33,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:22:33,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:22:33,135 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:22:33,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:22:33,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:33,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:22:33,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:33,322 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 21:22:33,323 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:22:33,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254701019] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:22:33,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:22:33,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-11-23 21:22:33,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817069088] [2023-11-23 21:22:33,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:22:33,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:22:33,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:22:33,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:22:33,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:22:33,326 INFO L87 Difference]: Start difference. First operand 198 states and 255 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-23 21:22:33,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:33,392 INFO L93 Difference]: Finished difference Result 395 states and 509 transitions. [2023-11-23 21:22:33,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:22:33,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 76 [2023-11-23 21:22:33,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:33,395 INFO L225 Difference]: With dead ends: 395 [2023-11-23 21:22:33,395 INFO L226 Difference]: Without dead ends: 199 [2023-11-23 21:22:33,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:22:33,398 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 29 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:33,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 135 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:22:33,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2023-11-23 21:22:33,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 193. [2023-11-23 21:22:33,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 124 states have (on average 1.2661290322580645) internal successors, (157), 140 states have internal predecessors, (157), 37 states have call successors, (37), 31 states have call predecessors, (37), 31 states have return successors, (47), 33 states have call predecessors, (47), 37 states have call successors, (47) [2023-11-23 21:22:33,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 241 transitions. [2023-11-23 21:22:33,428 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 241 transitions. Word has length 76 [2023-11-23 21:22:33,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:33,428 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 241 transitions. [2023-11-23 21:22:33,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-23 21:22:33,429 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 241 transitions. [2023-11-23 21:22:33,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-23 21:22:33,433 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:33,433 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:22:33,456 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-23 21:22:33,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-23 21:22:33,652 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:22:33,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:33,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1240997617, now seen corresponding path program 1 times [2023-11-23 21:22:33,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:22:33,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105634724] [2023-11-23 21:22:33,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:33,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:22:33,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:33,764 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-23 21:22:33,764 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:22:33,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105634724] [2023-11-23 21:22:33,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105634724] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:22:33,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:22:33,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:22:33,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931455695] [2023-11-23 21:22:33,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:22:33,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:22:33,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:22:33,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:22:33,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:22:33,767 INFO L87 Difference]: Start difference. First operand 193 states and 241 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 3 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) [2023-11-23 21:22:33,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:33,918 INFO L93 Difference]: Finished difference Result 404 states and 518 transitions. [2023-11-23 21:22:33,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:22:33,919 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 3 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 73 [2023-11-23 21:22:33,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:33,921 INFO L225 Difference]: With dead ends: 404 [2023-11-23 21:22:33,922 INFO L226 Difference]: Without dead ends: 213 [2023-11-23 21:22:33,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:22:33,924 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 46 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:33,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 189 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:22:33,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-11-23 21:22:33,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 209. [2023-11-23 21:22:33,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 138 states have (on average 1.2463768115942029) internal successors, (172), 153 states have internal predecessors, (172), 37 states have call successors, (37), 32 states have call predecessors, (37), 33 states have return successors, (47), 35 states have call predecessors, (47), 37 states have call successors, (47) [2023-11-23 21:22:33,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 256 transitions. [2023-11-23 21:22:33,979 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 256 transitions. Word has length 73 [2023-11-23 21:22:33,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:33,980 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 256 transitions. [2023-11-23 21:22:33,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 3 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) [2023-11-23 21:22:33,980 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 256 transitions. [2023-11-23 21:22:33,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-23 21:22:33,982 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:33,982 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:22:33,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 21:22:33,983 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:22:33,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:33,984 INFO L85 PathProgramCache]: Analyzing trace with hash -379717991, now seen corresponding path program 1 times [2023-11-23 21:22:33,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:22:33,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677132010] [2023-11-23 21:22:33,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:33,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:22:34,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:34,325 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-23 21:22:34,325 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:22:34,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677132010] [2023-11-23 21:22:34,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677132010] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:22:34,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1916480003] [2023-11-23 21:22:34,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:34,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:22:34,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:22:34,327 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:22:34,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:22:34,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:34,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-23 21:22:34,442 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:35,038 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 21:22:35,038 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:22:35,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1916480003] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:22:35,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:22:35,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 16 [2023-11-23 21:22:35,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288707602] [2023-11-23 21:22:35,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:22:35,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 21:22:35,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:22:35,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 21:22:35,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-11-23 21:22:35,047 INFO L87 Difference]: Start difference. First operand 209 states and 256 transitions. Second operand has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-23 21:22:35,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:35,744 INFO L93 Difference]: Finished difference Result 507 states and 625 transitions. [2023-11-23 21:22:35,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-23 21:22:35,744 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 5 states have call successors, (10) Word has length 76 [2023-11-23 21:22:35,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:35,747 INFO L225 Difference]: With dead ends: 507 [2023-11-23 21:22:35,748 INFO L226 Difference]: Without dead ends: 300 [2023-11-23 21:22:35,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2023-11-23 21:22:35,750 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 217 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:35,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 256 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 21:22:35,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2023-11-23 21:22:35,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 276. [2023-11-23 21:22:35,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 189 states have (on average 1.253968253968254) internal successors, (237), 206 states have internal predecessors, (237), 44 states have call successors, (44), 41 states have call predecessors, (44), 42 states have return successors, (56), 44 states have call predecessors, (56), 44 states have call successors, (56) [2023-11-23 21:22:35,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 337 transitions. [2023-11-23 21:22:35,803 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 337 transitions. Word has length 76 [2023-11-23 21:22:35,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:35,804 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 337 transitions. [2023-11-23 21:22:35,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-23 21:22:35,804 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 337 transitions. [2023-11-23 21:22:35,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-23 21:22:35,807 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:35,808 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:22:35,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:22:36,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:22:36,024 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:22:36,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:36,024 INFO L85 PathProgramCache]: Analyzing trace with hash -35269564, now seen corresponding path program 1 times [2023-11-23 21:22:36,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:22:36,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203760368] [2023-11-23 21:22:36,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:36,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:22:36,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:36,299 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-23 21:22:36,300 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:22:36,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203760368] [2023-11-23 21:22:36,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203760368] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:22:36,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798714758] [2023-11-23 21:22:36,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:36,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:22:36,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:22:36,302 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:22:36,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 21:22:36,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:36,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 21:22:36,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:36,552 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 21:22:36,552 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:22:36,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798714758] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:22:36,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:22:36,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-23 21:22:36,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191489392] [2023-11-23 21:22:36,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:22:36,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:22:36,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:22:36,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:22:36,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-23 21:22:36,555 INFO L87 Difference]: Start difference. First operand 276 states and 337 transitions. Second operand has 6 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-23 21:22:36,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:36,852 INFO L93 Difference]: Finished difference Result 747 states and 932 transitions. [2023-11-23 21:22:36,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:22:36,853 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 79 [2023-11-23 21:22:36,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:36,857 INFO L225 Difference]: With dead ends: 747 [2023-11-23 21:22:36,857 INFO L226 Difference]: Without dead ends: 473 [2023-11-23 21:22:36,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-23 21:22:36,859 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 33 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:36,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 221 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:22:36,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2023-11-23 21:22:36,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 461. [2023-11-23 21:22:36,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 320 states have (on average 1.2375) internal successors, (396), 343 states have internal predecessors, (396), 72 states have call successors, (72), 67 states have call predecessors, (72), 68 states have return successors, (90), 71 states have call predecessors, (90), 72 states have call successors, (90) [2023-11-23 21:22:36,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 558 transitions. [2023-11-23 21:22:36,937 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 558 transitions. Word has length 79 [2023-11-23 21:22:36,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:36,938 INFO L495 AbstractCegarLoop]: Abstraction has 461 states and 558 transitions. [2023-11-23 21:22:36,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-23 21:22:36,938 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 558 transitions. [2023-11-23 21:22:36,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-23 21:22:36,942 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:36,942 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:22:36,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 21:22:37,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:22:37,155 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:22:37,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:37,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1843252742, now seen corresponding path program 1 times [2023-11-23 21:22:37,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:22:37,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825543684] [2023-11-23 21:22:37,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:37,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:22:37,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:37,560 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 18 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-23 21:22:37,560 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:22:37,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825543684] [2023-11-23 21:22:37,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825543684] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:22:37,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419761082] [2023-11-23 21:22:37,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:37,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:22:37,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:22:37,562 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:22:37,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 21:22:37,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:37,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-23 21:22:37,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:37,868 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:22:37,869 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:22:37,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419761082] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:22:37,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:22:37,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 21 [2023-11-23 21:22:37,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489357745] [2023-11-23 21:22:37,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:22:37,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 21:22:37,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:22:37,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 21:22:37,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2023-11-23 21:22:37,872 INFO L87 Difference]: Start difference. First operand 461 states and 558 transitions. Second operand has 11 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 3 states have call successors, (13), 3 states have call predecessors, (13), 6 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-23 21:22:38,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:38,251 INFO L93 Difference]: Finished difference Result 939 states and 1178 transitions. [2023-11-23 21:22:38,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 21:22:38,252 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 3 states have call successors, (13), 3 states have call predecessors, (13), 6 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) Word has length 82 [2023-11-23 21:22:38,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:38,257 INFO L225 Difference]: With dead ends: 939 [2023-11-23 21:22:38,258 INFO L226 Difference]: Without dead ends: 665 [2023-11-23 21:22:38,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2023-11-23 21:22:38,260 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 46 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:38,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 660 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:22:38,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2023-11-23 21:22:38,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 637. [2023-11-23 21:22:38,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 447 states have (on average 1.2348993288590604) internal successors, (552), 474 states have internal predecessors, (552), 97 states have call successors, (97), 91 states have call predecessors, (97), 92 states have return successors, (134), 95 states have call predecessors, (134), 97 states have call successors, (134) [2023-11-23 21:22:38,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 783 transitions. [2023-11-23 21:22:38,375 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 783 transitions. Word has length 82 [2023-11-23 21:22:38,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:38,375 INFO L495 AbstractCegarLoop]: Abstraction has 637 states and 783 transitions. [2023-11-23 21:22:38,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 3 states have call successors, (13), 3 states have call predecessors, (13), 6 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-23 21:22:38,376 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 783 transitions. [2023-11-23 21:22:38,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-23 21:22:38,384 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:38,384 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:22:38,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 21:22:38,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-23 21:22:38,608 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:22:38,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:38,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1573233888, now seen corresponding path program 1 times [2023-11-23 21:22:38,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:22:38,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551435537] [2023-11-23 21:22:38,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:38,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:22:38,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:38,990 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 19 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 21:22:38,991 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:22:38,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551435537] [2023-11-23 21:22:38,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551435537] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:22:38,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751160296] [2023-11-23 21:22:38,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:38,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:22:38,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:22:38,993 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:22:39,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 21:22:39,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:39,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-23 21:22:39,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:39,558 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 29 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 21:22:39,558 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:22:40,205 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 21:22:40,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751160296] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:22:40,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [907191559] [2023-11-23 21:22:40,233 INFO L159 IcfgInterpreter]: Started Sifa with 51 locations of interest [2023-11-23 21:22:40,233 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:22:40,237 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:22:40,244 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:22:40,244 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:22:43,846 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 153 for LOIs [2023-11-23 21:22:44,010 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 40 for LOIs [2023-11-23 21:22:44,492 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 15 for LOIs [2023-11-23 21:22:44,626 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 42 for LOIs [2023-11-23 21:22:44,737 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 8 for LOIs [2023-11-23 21:22:44,745 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 15 for LOIs [2023-11-23 21:22:44,748 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 10 for LOIs [2023-11-23 21:22:44,750 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:22:53,619 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9929#(and (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification2_spec__2_~tmp___0~2#1|) (<= 0 (+ |timeShift___utac_acc__Specification2_spec__2_~tmp___0~2#1| 2147483648)) (<= ~methaneLevelCritical~0 1) (<= |timeShift___utac_acc__Specification2_spec__2_~tmp___0~2#1| 2147483647) (= 1 ~systemActive~0) (= |timeShift_isPumpRunning_#res#1| ~pumpRunning~0) (<= 0 ~methaneLevelCritical~0) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp___0~2#1| 0)) (= |timeShift___utac_acc__Specification2_spec__2_~tmp~5#1| ~methaneLevelCritical~0) (not (= ~methAndRunningLastTime~0 0)) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp~5#1| 0)))' at error location [2023-11-23 21:22:53,619 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:22:53,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:22:53,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 13] total 33 [2023-11-23 21:22:53,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453666465] [2023-11-23 21:22:53,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:22:53,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-11-23 21:22:53,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:22:53,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-11-23 21:22:53,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=477, Invalid=4635, Unknown=0, NotChecked=0, Total=5112 [2023-11-23 21:22:53,625 INFO L87 Difference]: Start difference. First operand 637 states and 783 transitions. Second operand has 33 states, 25 states have (on average 4.56) internal successors, (114), 24 states have internal predecessors, (114), 10 states have call successors, (31), 7 states have call predecessors, (31), 18 states have return successors, (34), 18 states have call predecessors, (34), 10 states have call successors, (34) [2023-11-23 21:22:56,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:22:56,486 INFO L93 Difference]: Finished difference Result 1817 states and 2432 transitions. [2023-11-23 21:22:56,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-11-23 21:22:56,486 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 25 states have (on average 4.56) internal successors, (114), 24 states have internal predecessors, (114), 10 states have call successors, (31), 7 states have call predecessors, (31), 18 states have return successors, (34), 18 states have call predecessors, (34), 10 states have call successors, (34) Word has length 85 [2023-11-23 21:22:56,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:22:56,496 INFO L225 Difference]: With dead ends: 1817 [2023-11-23 21:22:56,496 INFO L226 Difference]: Without dead ends: 1182 [2023-11-23 21:22:56,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4359 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=1198, Invalid=11912, Unknown=0, NotChecked=0, Total=13110 [2023-11-23 21:22:56,506 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 766 mSDsluCounter, 1152 mSDsCounter, 0 mSdLazyCounter, 2077 mSolverCounterSat, 430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 772 SdHoareTripleChecker+Valid, 1254 SdHoareTripleChecker+Invalid, 2507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 430 IncrementalHoareTripleChecker+Valid, 2077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:22:56,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [772 Valid, 1254 Invalid, 2507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [430 Valid, 2077 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-23 21:22:56,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2023-11-23 21:22:56,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 751. [2023-11-23 21:22:56,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 527 states have (on average 1.2125237191650853) internal successors, (639), 556 states have internal predecessors, (639), 114 states have call successors, (114), 106 states have call predecessors, (114), 109 states have return successors, (137), 112 states have call predecessors, (137), 114 states have call successors, (137) [2023-11-23 21:22:56,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 890 transitions. [2023-11-23 21:22:56,604 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 890 transitions. Word has length 85 [2023-11-23 21:22:56,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:22:56,606 INFO L495 AbstractCegarLoop]: Abstraction has 751 states and 890 transitions. [2023-11-23 21:22:56,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 25 states have (on average 4.56) internal successors, (114), 24 states have internal predecessors, (114), 10 states have call successors, (31), 7 states have call predecessors, (31), 18 states have return successors, (34), 18 states have call predecessors, (34), 10 states have call successors, (34) [2023-11-23 21:22:56,606 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 890 transitions. [2023-11-23 21:22:56,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-23 21:22:56,610 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:22:56,610 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:22:56,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 21:22:56,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:22:56,823 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:22:56,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:22:56,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1092566672, now seen corresponding path program 1 times [2023-11-23 21:22:56,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:22:56,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491103501] [2023-11-23 21:22:56,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:56,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:22:56,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:57,032 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 50 proven. 6 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-23 21:22:57,033 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:22:57,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491103501] [2023-11-23 21:22:57,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491103501] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:22:57,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17735027] [2023-11-23 21:22:57,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:22:57,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:22:57,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:22:57,035 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:22:57,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 21:22:57,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:22:57,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-23 21:22:57,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:22:57,400 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 63 proven. 44 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-23 21:22:57,400 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:22:57,883 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 57 proven. 3 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-23 21:22:57,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17735027] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:22:57,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [854183248] [2023-11-23 21:22:57,892 INFO L159 IcfgInterpreter]: Started Sifa with 51 locations of interest [2023-11-23 21:22:57,893 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 21:22:57,894 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 21:22:57,894 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 21:22:57,894 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 21:23:00,645 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 20 for LOIs [2023-11-23 21:23:00,650 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 36 for LOIs [2023-11-23 21:23:00,948 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 17 for LOIs [2023-11-23 21:23:01,041 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 38 for LOIs [2023-11-23 21:23:01,133 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 17 for LOIs [2023-11-23 21:23:01,135 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 29 for LOIs [2023-11-23 21:23:01,141 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 20 for LOIs [2023-11-23 21:23:01,143 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 21:23:05,247 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14210#(and (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification2_spec__2_~tmp___0~2#1|) (<= 0 (+ |timeShift___utac_acc__Specification2_spec__2_~tmp___0~2#1| 2147483648)) (<= 1 |#StackHeapBarrier|) (<= ~methaneLevelCritical~0 1) (= ~head~0.offset 0) (<= |timeShift___utac_acc__Specification2_spec__2_~tmp___0~2#1| 2147483647) (= 1 ~systemActive~0) (= |timeShift_isPumpRunning_#res#1| ~pumpRunning~0) (<= 0 ~methaneLevelCritical~0) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp___0~2#1| 0)) (= ~head~0.base 0) (= |timeShift___utac_acc__Specification2_spec__2_~tmp~5#1| ~methaneLevelCritical~0) (not (= ~methAndRunningLastTime~0 0)) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp~5#1| 0)) (= ~cleanupTimeShifts~0 4))' at error location [2023-11-23 21:23:05,247 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 21:23:05,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:23:05,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 17, 13] total 29 [2023-11-23 21:23:05,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695521172] [2023-11-23 21:23:05,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:23:05,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-23 21:23:05,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:23:05,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-23 21:23:05,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=343, Invalid=3817, Unknown=0, NotChecked=0, Total=4160 [2023-11-23 21:23:05,252 INFO L87 Difference]: Start difference. First operand 751 states and 890 transitions. Second operand has 29 states, 21 states have (on average 5.761904761904762) internal successors, (121), 19 states have internal predecessors, (121), 6 states have call successors, (34), 8 states have call predecessors, (34), 12 states have return successors, (37), 14 states have call predecessors, (37), 6 states have call successors, (37) [2023-11-23 21:23:06,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:23:06,939 INFO L93 Difference]: Finished difference Result 1599 states and 1901 transitions. [2023-11-23 21:23:06,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-23 21:23:06,940 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 21 states have (on average 5.761904761904762) internal successors, (121), 19 states have internal predecessors, (121), 6 states have call successors, (34), 8 states have call predecessors, (34), 12 states have return successors, (37), 14 states have call predecessors, (37), 6 states have call successors, (37) Word has length 122 [2023-11-23 21:23:06,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:23:06,942 INFO L225 Difference]: With dead ends: 1599 [2023-11-23 21:23:06,942 INFO L226 Difference]: Without dead ends: 0 [2023-11-23 21:23:06,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 315 SyntacticMatches, 3 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2482 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=694, Invalid=7862, Unknown=0, NotChecked=0, Total=8556 [2023-11-23 21:23:06,949 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 254 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 1979 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 2126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:23:06,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 568 Invalid, 2126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1979 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 21:23:06,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-23 21:23:06,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-23 21:23:06,950 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) [2023-11-23 21:23:06,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-23 21:23:06,951 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 122 [2023-11-23 21:23:06,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:23:06,951 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-23 21:23:06,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 21 states have (on average 5.761904761904762) internal successors, (121), 19 states have internal predecessors, (121), 6 states have call successors, (34), 8 states have call predecessors, (34), 12 states have return successors, (37), 14 states have call predecessors, (37), 6 states have call successors, (37) [2023-11-23 21:23:06,952 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-23 21:23:06,952 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-23 21:23:06,955 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:23:06,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 21:23:07,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:23:07,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-23 21:23:11,819 INFO L899 garLoopResultBuilder]: For program point deactivatePumpEXIT(lines 378 385) no Hoare annotation was computed. [2023-11-23 21:23:11,819 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 378 385) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse1 (not (= 1 ~systemActive~0))) (.cse2 (= |old(~pumpRunning~0)| 0))) (and (or .cse0 .cse1 .cse2 (not (= ~methaneLevelCritical~0 1))) (or .cse0 .cse1 .cse2 (not (= ~methaneLevelCritical~0 0))))) [2023-11-23 21:23:11,819 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 294 300) no Hoare annotation was computed. [2023-11-23 21:23:11,820 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 294 300) the Hoare annotation is: true [2023-11-23 21:23:11,820 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 83 94) the Hoare annotation is: (let ((.cse7 (not (= 1 ~systemActive~0))) (.cse1 (= ~methaneLevelCritical~0 1)) (.cse2 (not (= |old(~methaneLevelCritical~0)| 1))) (.cse5 (not (= |old(~methaneLevelCritical~0)| 0))) (.cse0 (not (= ~pumpRunning~0 0))) (.cse6 (= ~methaneLevelCritical~0 0)) (.cse3 (not (= ~methAndRunningLastTime~0 0))) (.cse4 (not (= 0 ~systemActive~0)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse5 .cse6 .cse7 .cse3) (or .cse0 .cse7 .cse1 .cse2 .cse3) (or .cse5 .cse0 .cse6 .cse3 .cse4))) [2023-11-23 21:23:11,820 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 83 94) no Hoare annotation was computed. [2023-11-23 21:23:11,820 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 901 930) no Hoare annotation was computed. [2023-11-23 21:23:11,820 INFO L899 garLoopResultBuilder]: For program point L926(lines 901 930) no Hoare annotation was computed. [2023-11-23 21:23:11,820 INFO L899 garLoopResultBuilder]: For program point L922(line 922) no Hoare annotation was computed. [2023-11-23 21:23:11,821 INFO L899 garLoopResultBuilder]: For program point L915(lines 915 919) no Hoare annotation was computed. [2023-11-23 21:23:11,821 INFO L902 garLoopResultBuilder]: At program point L915-1(lines 915 919) the Hoare annotation is: true [2023-11-23 21:23:11,821 INFO L902 garLoopResultBuilder]: At program point L911-2(lines 911 925) the Hoare annotation is: true [2023-11-23 21:23:11,821 INFO L902 garLoopResultBuilder]: At program point L907(line 907) the Hoare annotation is: true [2023-11-23 21:23:11,821 INFO L899 garLoopResultBuilder]: For program point L907-1(line 907) no Hoare annotation was computed. [2023-11-23 21:23:11,821 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 901 930) the Hoare annotation is: true [2023-11-23 21:23:11,821 INFO L899 garLoopResultBuilder]: For program point L895(line 895) no Hoare annotation was computed. [2023-11-23 21:23:11,822 INFO L899 garLoopResultBuilder]: For program point L507(lines 507 517) no Hoare annotation was computed. [2023-11-23 21:23:11,822 INFO L899 garLoopResultBuilder]: For program point L503(lines 503 520) no Hoare annotation was computed. [2023-11-23 21:23:11,822 INFO L895 garLoopResultBuilder]: At program point L342(line 342) the Hoare annotation is: (let ((.cse2 (not (= 0 ~systemActive~0))) (.cse1 (not (= ~methaneLevelCritical~0 1))) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse4 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse5 (not (= 1 ~systemActive~0))) (.cse3 (not (= ~methaneLevelCritical~0 0)))) (and (or .cse0 .cse1 .cse2) (or .cse0 .cse3 .cse2) (or .cse4 .cse5 .cse1) (or .cse0 .cse4 .cse5 .cse3) (or .cse4 .cse5 .cse3 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= ~methAndRunningLastTime~0 0) (= |timeShift_processEnvironment_~tmp~2#1| 0) (or (and (<= ~waterLevel~0 0) (= |old(~waterLevel~0)| ~waterLevel~0)) (< ~waterLevel~0 |old(~waterLevel~0)|)))))) [2023-11-23 21:23:11,822 INFO L899 garLoopResultBuilder]: For program point L503-1(lines 495 523) no Hoare annotation was computed. [2023-11-23 21:23:11,822 INFO L895 garLoopResultBuilder]: At program point L338(line 338) the Hoare annotation is: (let ((.cse2 (= |old(~pumpRunning~0)| 0))) (let ((.cse5 (not (= 0 ~systemActive~0))) (.cse6 (not (= ~methaneLevelCritical~0 0))) (.cse4 (not .cse2)) (.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse1 (not (= 1 ~systemActive~0))) (.cse3 (not (= ~methaneLevelCritical~0 1)))) (and (or .cse0 .cse1 .cse2 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= |timeShift_processEnvironment_~tmp~2#1| 1) (or (and (<= ~waterLevel~0 0) (= |old(~waterLevel~0)| ~waterLevel~0)) (< ~waterLevel~0 |old(~waterLevel~0)|))) .cse3) (or .cse4 .cse3 .cse5) (or .cse0 .cse1 .cse2 .cse6) (or .cse4 .cse6 .cse5) (or .cse4 .cse0 .cse1 .cse6) (or .cse4 .cse0 .cse1 .cse3)))) [2023-11-23 21:23:11,823 INFO L895 garLoopResultBuilder]: At program point L334(line 334) the Hoare annotation is: (let ((.cse3 (= |old(~pumpRunning~0)| 0))) (let ((.cse6 (not (= 0 ~systemActive~0))) (.cse5 (not .cse3)) (.cse4 (not (= ~methaneLevelCritical~0 1))) (.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse1 (not (= 1 ~systemActive~0))) (.cse2 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= ~methAndRunningLastTime~0 0) (or (and (<= ~waterLevel~0 0) (= |old(~waterLevel~0)| ~waterLevel~0)) (< ~waterLevel~0 |old(~waterLevel~0)|)))) (.cse7 (not (= ~methaneLevelCritical~0 0)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse5 .cse4 .cse6) (or .cse5 .cse7 .cse6) (or .cse5 .cse0 .cse1 .cse7) (or .cse5 .cse0 .cse1 .cse4) (or .cse0 .cse1 .cse2 .cse3 .cse7)))) [2023-11-23 21:23:11,823 INFO L899 garLoopResultBuilder]: For program point L334-1(line 334) no Hoare annotation was computed. [2023-11-23 21:23:11,823 INFO L899 garLoopResultBuilder]: For program point L508(lines 508 514) no Hoare annotation was computed. [2023-11-23 21:23:11,823 INFO L895 garLoopResultBuilder]: At program point L347(line 347) the Hoare annotation is: (let ((.cse5 (= |old(~pumpRunning~0)| 0))) (let ((.cse2 (not (= 0 ~systemActive~0))) (.cse6 (not (= ~methaneLevelCritical~0 0))) (.cse0 (not .cse5)) (.cse3 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse7 (and (= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) (or (< ~waterLevel~0 |old(~waterLevel~0)|) (= |old(~waterLevel~0)| ~waterLevel~0)))) (.cse4 (not (= 1 ~systemActive~0))) (.cse1 (not (= ~methaneLevelCritical~0 1)))) (and (or .cse0 .cse1 .cse2) (or .cse3 .cse4 .cse5 .cse6) (or .cse0 .cse6 .cse2) (or .cse0 .cse3 .cse7 .cse4 .cse6) (or .cse3 .cse4 .cse5 .cse1) (or .cse0 .cse3 .cse7 .cse4 .cse1)))) [2023-11-23 21:23:11,823 INFO L899 garLoopResultBuilder]: For program point L347-1(lines 328 352) no Hoare annotation was computed. [2023-11-23 21:23:11,824 INFO L899 garLoopResultBuilder]: For program point L281-1(lines 281 287) no Hoare annotation was computed. [2023-11-23 21:23:11,824 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 270 293) the Hoare annotation is: (let ((.cse7 (= |old(~pumpRunning~0)| 0)) (.cse12 (= ~methAndRunningLastTime~0 0)) (.cse1 (= ~pumpRunning~0 0)) (.cse13 (<= ~waterLevel~0 |old(~waterLevel~0)|))) (let ((.cse5 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse12 (not .cse1) .cse13)) (.cse2 (not (= ~methaneLevelCritical~0 0))) (.cse9 (< 1 |old(~waterLevel~0)|)) (.cse10 (<= ~waterLevel~0 1)) (.cse3 (not (= 0 ~systemActive~0))) (.cse0 (not .cse7)) (.cse4 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse6 (not (= 1 ~systemActive~0))) (.cse11 (and .cse1 .cse12 .cse13)) (.cse8 (not (= ~methaneLevelCritical~0 1)))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse4 .cse5 .cse6 .cse7 .cse2) (or .cse4 .cse5 .cse6 .cse7 .cse8) (or .cse9 .cse0 .cse10 .cse2 .cse3) (or .cse0 .cse1 .cse8 .cse3) (or .cse0 .cse4 .cse6 .cse2 .cse11) (or .cse9 .cse0 .cse10 .cse8 .cse3) (or .cse0 .cse4 .cse6 .cse11 .cse8)))) [2023-11-23 21:23:11,824 INFO L895 garLoopResultBuilder]: At program point L501(line 501) the Hoare annotation is: (let ((.cse11 (= |old(~pumpRunning~0)| 0))) (let ((.cse10 (or (< ~waterLevel~0 |old(~waterLevel~0)|) (= |old(~waterLevel~0)| ~waterLevel~0))) (.cse4 (< 1 |old(~waterLevel~0)|)) (.cse5 (<= ~waterLevel~0 1)) (.cse3 (not (= 0 ~systemActive~0))) (.cse2 (not (= ~methaneLevelCritical~0 0))) (.cse0 (not .cse11)) (.cse6 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse7 (not (= 1 ~systemActive~0))) (.cse1 (= ~pumpRunning~0 0)) (.cse8 (= ~methAndRunningLastTime~0 0)) (.cse9 (<= ~waterLevel~0 |old(~waterLevel~0)|)) (.cse12 (not (= ~methaneLevelCritical~0 1)))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse4 .cse0 .cse5 .cse2 .cse3) (or .cse0 .cse6 .cse7 .cse2 (and .cse8 (<= 2 ~waterLevel~0) .cse9 (= ~pumpRunning~0 1)) (and .cse1 .cse8 .cse5 .cse10)) (or .cse6 .cse7 .cse11 .cse12 (and .cse1 .cse10)) (or .cse0 .cse1 .cse12 .cse3) (or .cse4 .cse0 .cse5 .cse12 .cse3) (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse8 .cse9) .cse6 .cse7 .cse11 .cse2) (or .cse0 .cse6 .cse7 (and .cse1 .cse8 .cse9) .cse12)))) [2023-11-23 21:23:11,824 INFO L899 garLoopResultBuilder]: For program point L501-1(line 501) no Hoare annotation was computed. [2023-11-23 21:23:11,825 INFO L899 garLoopResultBuilder]: For program point L274-1(lines 273 292) no Hoare annotation was computed. [2023-11-23 21:23:11,825 INFO L899 garLoopResultBuilder]: For program point L336(lines 336 344) no Hoare annotation was computed. [2023-11-23 21:23:11,825 INFO L899 garLoopResultBuilder]: For program point L332(lines 332 349) no Hoare annotation was computed. [2023-11-23 21:23:11,825 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 270 293) no Hoare annotation was computed. [2023-11-23 21:23:11,825 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 895) no Hoare annotation was computed. [2023-11-23 21:23:11,825 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 95 103) the Hoare annotation is: true [2023-11-23 21:23:11,826 INFO L899 garLoopResultBuilder]: For program point isMethaneLevelCriticalEXIT(lines 95 103) no Hoare annotation was computed. [2023-11-23 21:23:11,826 INFO L895 garLoopResultBuilder]: At program point L225(line 225) the Hoare annotation is: (let ((.cse1 (= ~methaneLevelCritical~0 0)) (.cse7 (= 0 ~systemActive~0)) (.cse5 (= ~pumpRunning~0 0)) (.cse0 (= ~methAndRunningLastTime~0 0)) (.cse2 (= |ULTIMATE.start_main_~tmp~9#1| 1)) (.cse3 (= 1 ~systemActive~0)) (.cse6 (= ~methaneLevelCritical~0 1)) (.cse4 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse0 .cse2 .cse6 .cse4 .cse7) (and .cse5 .cse0 .cse1 .cse2 .cse4 .cse7) (and .cse5 .cse0 .cse2 .cse3 .cse6 .cse4))) [2023-11-23 21:23:11,826 INFO L895 garLoopResultBuilder]: At program point L250(lines 203 252) the Hoare annotation is: (let ((.cse5 (= 0 ~systemActive~0)) (.cse3 (= ~methaneLevelCritical~0 1)) (.cse1 (= ~methAndRunningLastTime~0 0)) (.cse0 (= ~pumpRunning~0 0)) (.cse6 (= ~methaneLevelCritical~0 0)) (.cse2 (= |ULTIMATE.start_main_~tmp~9#1| 1)) (.cse7 (= 1 ~systemActive~0)) (.cse4 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse0 .cse1 .cse6 .cse2 .cse4 .cse5) (and .cse1 .cse6 (<= ~waterLevel~0 1) .cse2 .cse7 .cse4) (and .cse0 .cse1 .cse2 .cse7 .cse3 .cse4) (and .cse1 (not .cse0) .cse6 .cse2 .cse7 .cse4))) [2023-11-23 21:23:11,826 INFO L899 garLoopResultBuilder]: For program point L213(lines 213 219) no Hoare annotation was computed. [2023-11-23 21:23:11,826 INFO L899 garLoopResultBuilder]: For program point L213-1(lines 213 219) no Hoare annotation was computed. [2023-11-23 21:23:11,826 INFO L899 garLoopResultBuilder]: For program point L465(lines 465 471) no Hoare annotation was computed. [2023-11-23 21:23:11,827 INFO L899 garLoopResultBuilder]: For program point L465-1(lines 465 471) no Hoare annotation was computed. [2023-11-23 21:23:11,827 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-23 21:23:11,827 INFO L899 garLoopResultBuilder]: For program point L256(lines 193 260) no Hoare annotation was computed. [2023-11-23 21:23:11,827 INFO L899 garLoopResultBuilder]: For program point L223(lines 223 229) no Hoare annotation was computed. [2023-11-23 21:23:11,827 INFO L899 garLoopResultBuilder]: For program point L223-1(lines 223 229) no Hoare annotation was computed. [2023-11-23 21:23:11,827 INFO L899 garLoopResultBuilder]: For program point L983(lines 983 990) no Hoare annotation was computed. [2023-11-23 21:23:11,828 INFO L895 garLoopResultBuilder]: At program point L215(line 215) the Hoare annotation is: (let ((.cse1 (= ~methaneLevelCritical~0 0)) (.cse7 (= 0 ~systemActive~0)) (.cse5 (= ~pumpRunning~0 0)) (.cse0 (= ~methAndRunningLastTime~0 0)) (.cse2 (= |ULTIMATE.start_main_~tmp~9#1| 1)) (.cse3 (= 1 ~systemActive~0)) (.cse6 (= ~methaneLevelCritical~0 1)) (.cse4 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse0 .cse2 .cse6 .cse4 .cse7) (and .cse5 .cse0 .cse1 .cse2 .cse4 .cse7) (and .cse5 .cse0 .cse2 .cse3 .cse6 .cse4))) [2023-11-23 21:23:11,828 INFO L899 garLoopResultBuilder]: For program point L983-2(lines 983 990) no Hoare annotation was computed. [2023-11-23 21:23:11,828 INFO L895 garLoopResultBuilder]: At program point L467(line 467) the Hoare annotation is: (let ((.cse0 (not (= ~pumpRunning~0 0))) (.cse1 (= |ULTIMATE.start_main_~tmp~9#1| 1)) (.cse2 (= 1 ~systemActive~0)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 (= ~methaneLevelCritical~0 0) .cse1 .cse2 .cse3) (and .cse0 .cse1 .cse2 (= ~methaneLevelCritical~0 1) .cse3))) [2023-11-23 21:23:11,828 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-23 21:23:11,828 INFO L895 garLoopResultBuilder]: At program point L253(lines 202 254) the Hoare annotation is: false [2023-11-23 21:23:11,828 INFO L899 garLoopResultBuilder]: For program point L241(lines 241 247) no Hoare annotation was computed. [2023-11-23 21:23:11,829 INFO L895 garLoopResultBuilder]: At program point L241-2(lines 233 248) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0))) (let ((.cse7 (= ~methaneLevelCritical~0 1)) (.cse8 (= 0 ~systemActive~0)) (.cse1 (= ~methAndRunningLastTime~0 0)) (.cse6 (not .cse0)) (.cse2 (= ~methaneLevelCritical~0 0)) (.cse3 (= |ULTIMATE.start_main_~tmp~9#1| 1)) (.cse4 (= 1 ~systemActive~0)) (.cse5 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (and .cse1 .cse6 .cse3 .cse4 .cse7 .cse5) (and .cse0 .cse2 .cse3 .cse5 .cse8) (and .cse0 .cse1 .cse3 .cse4 .cse7 .cse5) (and .cse0 .cse3 .cse7 .cse5 .cse8) (and .cse1 .cse6 .cse2 .cse3 .cse4 .cse5)))) [2023-11-23 21:23:11,829 INFO L899 garLoopResultBuilder]: For program point L204(lines 203 252) no Hoare annotation was computed. [2023-11-23 21:23:11,829 INFO L899 garLoopResultBuilder]: For program point L233(lines 233 248) no Hoare annotation was computed. [2023-11-23 21:23:11,829 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 71 82) no Hoare annotation was computed. [2023-11-23 21:23:11,829 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 71 82) the Hoare annotation is: (let ((.cse1 (<= ~waterLevel~0 |old(~waterLevel~0)|)) (.cse0 (not (= 1 ~systemActive~0))) (.cse3 (not (= ~methaneLevelCritical~0 0))) (.cse2 (not (= ~methAndRunningLastTime~0 0)))) (and (or (not (= ~pumpRunning~0 0)) .cse0 (not (= ~methaneLevelCritical~0 1)) .cse1 .cse2) (or .cse0 .cse3 .cse1 .cse2) (or .cse0 (<= 2 ~waterLevel~0) (< |old(~waterLevel~0)| 2) .cse3 (not (= ~pumpRunning~0 1)) .cse2))) [2023-11-23 21:23:11,830 INFO L895 garLoopResultBuilder]: At program point L316(line 316) the Hoare annotation is: (let ((.cse4 (not (= 1 ~systemActive~0))) (.cse1 (= ~pumpRunning~0 0)) (.cse2 (<= ~waterLevel~0 1)) (.cse0 (= |old(~pumpRunning~0)| 0)) (.cse3 (= |processEnvironment__wrappee__methaneQuery_~tmp~1#1| 0)) (.cse5 (not (= ~methAndRunningLastTime~0 0)))) (and (or (not .cse0) (and .cse1 .cse2 .cse3) .cse4 (not (= ~methaneLevelCritical~0 1)) .cse5) (or .cse4 (not (= ~methaneLevelCritical~0 0)) (and .cse1 .cse2 .cse0 .cse3) .cse5))) [2023-11-23 21:23:11,830 INFO L899 garLoopResultBuilder]: For program point L310(lines 310 318) no Hoare annotation was computed. [2023-11-23 21:23:11,830 INFO L899 garLoopResultBuilder]: For program point L306(lines 306 323) no Hoare annotation was computed. [2023-11-23 21:23:11,830 INFO L895 garLoopResultBuilder]: At program point L366(line 366) the Hoare annotation is: (let ((.cse3 (not (= ~methaneLevelCritical~0 0))) (.cse5 (= |old(~pumpRunning~0)| 0)) (.cse0 (not (= 1 ~systemActive~0))) (.cse1 (= ~pumpRunning~0 0)) (.cse2 (= |processEnvironment__wrappee__methaneQuery_~tmp~1#1| 1)) (.cse4 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 (and .cse1 .cse2) .cse3 .cse4) (or .cse0 (< 1 ~waterLevel~0) .cse3 .cse4) (or .cse0 .cse5 .cse3 .cse4) (or (not .cse5) .cse0 (and .cse1 .cse2 (<= 2 ~waterLevel~0)) (not (= ~methaneLevelCritical~0 1)) .cse4))) [2023-11-23 21:23:11,830 INFO L899 garLoopResultBuilder]: For program point L366-1(line 366) no Hoare annotation was computed. [2023-11-23 21:23:11,830 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 302 326) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (not (= ~methAndRunningLastTime~0 0)))) (and (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) .cse0 (not (= ~methaneLevelCritical~0 1)) .cse1) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse0 (not (= ~methaneLevelCritical~0 0)) .cse1))) [2023-11-23 21:23:11,831 INFO L895 garLoopResultBuilder]: At program point L321(line 321) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= 1 ~systemActive~0))) (.cse3 (not (= ~methaneLevelCritical~0 0))) (.cse2 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 .cse1 (not (= ~methaneLevelCritical~0 1)) .cse2) (or .cse0 .cse1 .cse3 .cse2) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse1 .cse3 .cse2))) [2023-11-23 21:23:11,831 INFO L899 garLoopResultBuilder]: For program point L321-1(lines 302 326) no Hoare annotation was computed. [2023-11-23 21:23:11,833 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__methaneQueryEXIT(lines 302 326) no Hoare annotation was computed. [2023-11-23 21:23:11,833 INFO L899 garLoopResultBuilder]: For program point isMethaneAlarmEXIT(lines 386 396) no Hoare annotation was computed. [2023-11-23 21:23:11,833 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 386 396) the Hoare annotation is: true [2023-11-23 21:23:11,833 INFO L902 garLoopResultBuilder]: At program point L391(line 391) the Hoare annotation is: true [2023-11-23 21:23:11,834 INFO L899 garLoopResultBuilder]: For program point L391-1(line 391) no Hoare annotation was computed. [2023-11-23 21:23:11,836 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:23:11,838 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:23:11,855 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:23:11 BoogieIcfgContainer [2023-11-23 21:23:11,855 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:23:11,856 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:23:11,856 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:23:11,856 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:23:11,856 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:22:30" (3/4) ... [2023-11-23 21:23:11,858 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 21:23:11,862 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2023-11-23 21:23:11,862 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2023-11-23 21:23:11,862 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2023-11-23 21:23:11,862 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2023-11-23 21:23:11,863 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2023-11-23 21:23:11,863 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2023-11-23 21:23:11,863 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2023-11-23 21:23:11,863 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__methaneQuery [2023-11-23 21:23:11,863 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneAlarm [2023-11-23 21:23:11,871 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 43 nodes and edges [2023-11-23 21:23:11,872 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-11-23 21:23:11,873 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-23 21:23:11,874 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-23 21:23:11,874 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-23 21:23:11,903 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((!((\old(pumpRunning) == 0)) || (pumpRunning == 0)) || !((methaneLevelCritical == 0))) || !((0 == systemActive))) && ((((!((\old(methAndRunningLastTime) == 0)) || ((((pumpRunning == \old(pumpRunning)) && (methAndRunningLastTime == 0)) && !((pumpRunning == 0))) && (waterLevel <= \old(waterLevel)))) || !((1 == systemActive))) || (\old(pumpRunning) == 0)) || !((methaneLevelCritical == 0)))) && ((((!((\old(methAndRunningLastTime) == 0)) || ((((pumpRunning == \old(pumpRunning)) && (methAndRunningLastTime == 0)) && !((pumpRunning == 0))) && (waterLevel <= \old(waterLevel)))) || !((1 == systemActive))) || (\old(pumpRunning) == 0)) || !((methaneLevelCritical == 1)))) && (((((1 < \old(waterLevel)) || !((\old(pumpRunning) == 0))) || (waterLevel <= 1)) || !((methaneLevelCritical == 0))) || !((0 == systemActive)))) && (((!((\old(pumpRunning) == 0)) || (pumpRunning == 0)) || !((methaneLevelCritical == 1))) || !((0 == systemActive)))) && ((((!((\old(pumpRunning) == 0)) || !((\old(methAndRunningLastTime) == 0))) || !((1 == systemActive))) || !((methaneLevelCritical == 0))) || (((pumpRunning == 0) && (methAndRunningLastTime == 0)) && (waterLevel <= \old(waterLevel))))) && (((((1 < \old(waterLevel)) || !((\old(pumpRunning) == 0))) || (waterLevel <= 1)) || !((methaneLevelCritical == 1))) || !((0 == systemActive)))) && ((((!((\old(pumpRunning) == 0)) || !((\old(methAndRunningLastTime) == 0))) || !((1 == systemActive))) || (((pumpRunning == 0) && (methAndRunningLastTime == 0)) && (waterLevel <= \old(waterLevel)))) || !((methaneLevelCritical == 1)))) [2023-11-23 21:23:11,938 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((!((\old(pumpRunning) == 0)) || (pumpRunning == 0)) || !((methaneLevelCritical == 0))) || !((0 == systemActive))) && ((((!((\old(methAndRunningLastTime) == 0)) || ((((pumpRunning == \old(pumpRunning)) && (methAndRunningLastTime == 0)) && !((pumpRunning == 0))) && (waterLevel <= \old(waterLevel)))) || !((1 == systemActive))) || (\old(pumpRunning) == 0)) || !((methaneLevelCritical == 0)))) && ((((!((\old(methAndRunningLastTime) == 0)) || ((((pumpRunning == \old(pumpRunning)) && (methAndRunningLastTime == 0)) && !((pumpRunning == 0))) && (waterLevel <= \old(waterLevel)))) || !((1 == systemActive))) || (\old(pumpRunning) == 0)) || !((methaneLevelCritical == 1)))) && (((((1 < \old(waterLevel)) || !((\old(pumpRunning) == 0))) || (waterLevel <= 1)) || !((methaneLevelCritical == 0))) || !((0 == systemActive)))) && (((!((\old(pumpRunning) == 0)) || (pumpRunning == 0)) || !((methaneLevelCritical == 1))) || !((0 == systemActive)))) && ((((!((\old(pumpRunning) == 0)) || !((\old(methAndRunningLastTime) == 0))) || !((1 == systemActive))) || !((methaneLevelCritical == 0))) || (((pumpRunning == 0) && (methAndRunningLastTime == 0)) && (waterLevel <= \old(waterLevel))))) && (((((1 < \old(waterLevel)) || !((\old(pumpRunning) == 0))) || (waterLevel <= 1)) || !((methaneLevelCritical == 1))) || !((0 == systemActive)))) && ((((!((\old(pumpRunning) == 0)) || !((\old(methAndRunningLastTime) == 0))) || !((1 == systemActive))) || (((pumpRunning == 0) && (methAndRunningLastTime == 0)) && (waterLevel <= \old(waterLevel)))) || !((methaneLevelCritical == 1)))) [2023-11-23 21:23:11,993 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire/witness.graphml [2023-11-23 21:23:11,993 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire/witness.yml [2023-11-23 21:23:11,993 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:23:11,994 INFO L158 Benchmark]: Toolchain (without parser) took 43032.61ms. Allocated memory was 169.9MB in the beginning and 700.4MB in the end (delta: 530.6MB). Free memory was 132.6MB in the beginning and 458.9MB in the end (delta: -326.3MB). Peak memory consumption was 205.3MB. Max. memory is 16.1GB. [2023-11-23 21:23:11,995 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 115.3MB. Free memory is still 88.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:23:11,995 INFO L158 Benchmark]: CACSL2BoogieTranslator took 655.63ms. Allocated memory is still 169.9MB. Free memory was 132.6MB in the beginning and 112.8MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-23 21:23:11,996 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.51ms. Allocated memory is still 169.9MB. Free memory was 112.8MB in the beginning and 110.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:23:11,996 INFO L158 Benchmark]: Boogie Preprocessor took 52.41ms. Allocated memory is still 169.9MB. Free memory was 110.7MB in the beginning and 109.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:23:11,996 INFO L158 Benchmark]: RCFGBuilder took 641.32ms. Allocated memory is still 169.9MB. Free memory was 109.1MB in the beginning and 83.3MB in the end (delta: 25.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-23 21:23:11,997 INFO L158 Benchmark]: TraceAbstraction took 41458.04ms. Allocated memory was 169.9MB in the beginning and 700.4MB in the end (delta: 530.6MB). Free memory was 82.3MB in the beginning and 466.3MB in the end (delta: -383.9MB). Peak memory consumption was 370.9MB. Max. memory is 16.1GB. [2023-11-23 21:23:11,997 INFO L158 Benchmark]: Witness Printer took 138.08ms. Allocated memory is still 700.4MB. Free memory was 466.3MB in the beginning and 458.9MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-23 21:23:11,999 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 115.3MB. Free memory is still 88.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 655.63ms. Allocated memory is still 169.9MB. Free memory was 132.6MB in the beginning and 112.8MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.51ms. Allocated memory is still 169.9MB. Free memory was 112.8MB in the beginning and 110.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.41ms. Allocated memory is still 169.9MB. Free memory was 110.7MB in the beginning and 109.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 641.32ms. Allocated memory is still 169.9MB. Free memory was 109.1MB in the beginning and 83.3MB in the end (delta: 25.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 41458.04ms. Allocated memory was 169.9MB in the beginning and 700.4MB in the end (delta: 530.6MB). Free memory was 82.3MB in the beginning and 466.3MB in the end (delta: -383.9MB). Peak memory consumption was 370.9MB. Max. memory is 16.1GB. * Witness Printer took 138.08ms. Allocated memory is still 700.4MB. Free memory was 466.3MB in the beginning and 458.9MB 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,"Environment.i","") [49] - GenericResultAtLocation [Line: 150]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [150] - GenericResultAtLocation [Line: 188]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [188] - GenericResultAtLocation [Line: 261]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [261] - GenericResultAtLocation [Line: 484]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [484] - GenericResultAtLocation [Line: 524]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [524] - GenericResultAtLocation [Line: 890]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [890] - GenericResultAtLocation [Line: 899]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [899] * 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: 895]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 41.3s, OverallIterations: 12, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 6.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1631 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1597 mSDsluCounter, 3905 SdHoareTripleChecker+Invalid, 3.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3038 mSDsCounter, 700 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5268 IncrementalHoareTripleChecker+Invalid, 5968 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 700 mSolverCounterUnsat, 867 mSDtfsCounter, 5268 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1118 GetRequests, 839 SyntacticMatches, 5 SemanticMatches, 274 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7023 ImplicationChecksByTransitivity, 16.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=751occurred in iteration=11, InterpolantAutomatonStates: 143, 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, 12 MinimizatonAttempts, 522 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 27 LocationsWithAnnotation, 1347 PreInvPairs, 1454 NumberOfFragments, 1625 HoareAnnotationTreeSize, 1347 FomulaSimplifications, 17881 FormulaSimplificationTreeSizeReduction, 0.6s HoareSimplificationTime, 27 FomulaSimplificationsInter, 12851 FormulaSimplificationTreeSizeReductionInter, 4.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 1230 NumberOfCodeBlocks, 1230 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 1417 ConstructedInterpolants, 0 QuantifiedInterpolants, 3503 SizeOfPredicates, 24 NumberOfNonLiveVariables, 1938 ConjunctsInSsa, 134 ConjunctsInUnsatCore, 20 InterpolantComputations, 10 PerfectInterpolantSequences, 727/827 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: 202]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 911]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 203]: Loop Invariant Derived loop invariant: ((((((((((pumpRunning == 0) && (methAndRunningLastTime == 0)) && (tmp == 1)) && (methaneLevelCritical == 1)) && (splverifierCounter == 0)) && (0 == systemActive)) || ((((((pumpRunning == 0) && (methAndRunningLastTime == 0)) && (methaneLevelCritical == 0)) && (tmp == 1)) && (splverifierCounter == 0)) && (0 == systemActive))) || ((((((methAndRunningLastTime == 0) && (methaneLevelCritical == 0)) && (waterLevel <= 1)) && (tmp == 1)) && (1 == systemActive)) && (splverifierCounter == 0))) || ((((((pumpRunning == 0) && (methAndRunningLastTime == 0)) && (tmp == 1)) && (1 == systemActive)) && (methaneLevelCritical == 1)) && (splverifierCounter == 0))) || ((((((methAndRunningLastTime == 0) && !((pumpRunning == 0))) && (methaneLevelCritical == 0)) && (tmp == 1)) && (1 == systemActive)) && (splverifierCounter == 0))) - InvariantResult [Line: 270]: Loop Invariant Derived loop invariant: ((((((((((!((\old(pumpRunning) == 0)) || (pumpRunning == 0)) || !((methaneLevelCritical == 0))) || !((0 == systemActive))) && ((((!((\old(methAndRunningLastTime) == 0)) || ((((pumpRunning == \old(pumpRunning)) && (methAndRunningLastTime == 0)) && !((pumpRunning == 0))) && (waterLevel <= \old(waterLevel)))) || !((1 == systemActive))) || (\old(pumpRunning) == 0)) || !((methaneLevelCritical == 0)))) && ((((!((\old(methAndRunningLastTime) == 0)) || ((((pumpRunning == \old(pumpRunning)) && (methAndRunningLastTime == 0)) && !((pumpRunning == 0))) && (waterLevel <= \old(waterLevel)))) || !((1 == systemActive))) || (\old(pumpRunning) == 0)) || !((methaneLevelCritical == 1)))) && (((((1 < \old(waterLevel)) || !((\old(pumpRunning) == 0))) || (waterLevel <= 1)) || !((methaneLevelCritical == 0))) || !((0 == systemActive)))) && (((!((\old(pumpRunning) == 0)) || (pumpRunning == 0)) || !((methaneLevelCritical == 1))) || !((0 == systemActive)))) && ((((!((\old(pumpRunning) == 0)) || !((\old(methAndRunningLastTime) == 0))) || !((1 == systemActive))) || !((methaneLevelCritical == 0))) || (((pumpRunning == 0) && (methAndRunningLastTime == 0)) && (waterLevel <= \old(waterLevel))))) && (((((1 < \old(waterLevel)) || !((\old(pumpRunning) == 0))) || (waterLevel <= 1)) || !((methaneLevelCritical == 1))) || !((0 == systemActive)))) && ((((!((\old(pumpRunning) == 0)) || !((\old(methAndRunningLastTime) == 0))) || !((1 == systemActive))) || (((pumpRunning == 0) && (methAndRunningLastTime == 0)) && (waterLevel <= \old(waterLevel)))) || !((methaneLevelCritical == 1)))) RESULT: Ultimate proved your program to be correct! [2023-11-23 21:23:12,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ca5bbc98-82c6-45e3-b61d-855dc9e3f6a2/bin/utaipan-verify-mE87zJ7Ire/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