./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product57.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758265c2-0ace-42f9-b040-7173d7656c3c/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758265c2-0ace-42f9-b040-7173d7656c3c/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_758265c2-0ace-42f9-b040-7173d7656c3c/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758265c2-0ace-42f9-b040-7173d7656c3c/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product57.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758265c2-0ace-42f9-b040-7173d7656c3c/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_758265c2-0ace-42f9-b040-7173d7656c3c/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 d0f26fc8ab0bdaf05de905c05e583bc491c727ef99c3d3df87bba160b541b55a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:35:05,775 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:35:05,930 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758265c2-0ace-42f9-b040-7173d7656c3c/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 20:35:05,940 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:35:05,941 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:35:05,982 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:35:05,983 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:35:05,984 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:35:05,985 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:35:05,992 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:35:05,993 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:35:05,994 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:35:05,995 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:35:05,996 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:35:05,997 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:35:05,997 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:35:05,998 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:35:05,998 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:35:05,998 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:35:05,999 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:35:05,999 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:35:06,000 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:35:06,002 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:35:06,002 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:35:06,003 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:35:06,003 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:35:06,003 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:35:06,004 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:35:06,004 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:35:06,005 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:35:06,006 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:35:06,006 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:35:06,007 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:35:06,007 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:35:06,007 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:35:06,007 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 20:35:06,008 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:35:06,008 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:35:06,008 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:35:06,008 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:35:06,009 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:35:06,009 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:35:06,009 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:35:06,010 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:35:06,010 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:35:06,010 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:35:06,011 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:35:06,011 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_758265c2-0ace-42f9-b040-7173d7656c3c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758265c2-0ace-42f9-b040-7173d7656c3c/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d0f26fc8ab0bdaf05de905c05e583bc491c727ef99c3d3df87bba160b541b55a [2023-11-23 20:35:06,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:35:06,400 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:35:06,403 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:35:06,406 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:35:06,406 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:35:06,408 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758265c2-0ace-42f9-b040-7173d7656c3c/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/product-lines/minepump_spec1_product57.cil.c [2023-11-23 20:35:09,720 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:35:10,169 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:35:10,170 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758265c2-0ace-42f9-b040-7173d7656c3c/sv-benchmarks/c/product-lines/minepump_spec1_product57.cil.c [2023-11-23 20:35:10,185 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758265c2-0ace-42f9-b040-7173d7656c3c/bin/utaipan-verify-mE87zJ7Ire/data/fb629ce88/73e72bb230f340dcb17114077df3400e/FLAG9daef8b07 [2023-11-23 20:35:10,199 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758265c2-0ace-42f9-b040-7173d7656c3c/bin/utaipan-verify-mE87zJ7Ire/data/fb629ce88/73e72bb230f340dcb17114077df3400e [2023-11-23 20:35:10,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:35:10,203 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:35:10,205 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:35:10,205 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:35:10,210 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:35:10,211 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:35:10" (1/1) ... [2023-11-23 20:35:10,212 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1433a512 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:10, skipping insertion in model container [2023-11-23 20:35:10,212 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:35:10" (1/1) ... [2023-11-23 20:35:10,263 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:35:10,611 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_758265c2-0ace-42f9-b040-7173d7656c3c/sv-benchmarks/c/product-lines/minepump_spec1_product57.cil.c[18661,18674] [2023-11-23 20:35:10,616 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:35:10,629 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:35:10,641 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [49] [2023-11-23 20:35:10,643 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [78] [2023-11-23 20:35:10,643 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [116] [2023-11-23 20:35:10,644 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [482] [2023-11-23 20:35:10,644 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [551] [2023-11-23 20:35:10,644 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [773] [2023-11-23 20:35:10,645 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [869] [2023-11-23 20:35:10,645 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [973] [2023-11-23 20:35:10,747 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_758265c2-0ace-42f9-b040-7173d7656c3c/sv-benchmarks/c/product-lines/minepump_spec1_product57.cil.c[18661,18674] [2023-11-23 20:35:10,753 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:35:10,784 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:35:10,785 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:10 WrapperNode [2023-11-23 20:35:10,785 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:35:10,787 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:35:10,788 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:35:10,788 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:35:10,798 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:10" (1/1) ... [2023-11-23 20:35:10,826 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:10" (1/1) ... [2023-11-23 20:35:10,877 INFO L138 Inliner]: procedures = 56, calls = 100, calls flagged for inlining = 24, calls inlined = 21, statements flattened = 215 [2023-11-23 20:35:10,878 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:35:10,879 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:35:10,879 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:35:10,880 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:35:10,891 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:10" (1/1) ... [2023-11-23 20:35:10,892 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:10" (1/1) ... [2023-11-23 20:35:10,905 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:10" (1/1) ... [2023-11-23 20:35:10,911 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:10" (1/1) ... [2023-11-23 20:35:10,917 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:10" (1/1) ... [2023-11-23 20:35:10,936 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:10" (1/1) ... [2023-11-23 20:35:10,938 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:10" (1/1) ... [2023-11-23 20:35:10,940 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:10" (1/1) ... [2023-11-23 20:35:10,943 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:35:10,944 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:35:10,945 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:35:10,945 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:35:10,948 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:10" (1/1) ... [2023-11-23 20:35:10,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:35:10,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758265c2-0ace-42f9-b040-7173d7656c3c/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:35:10,985 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758265c2-0ace-42f9-b040-7173d7656c3c/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:35:11,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758265c2-0ace-42f9-b040-7173d7656c3c/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:35:11,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:35:11,041 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-11-23 20:35:11,042 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-11-23 20:35:11,043 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-23 20:35:11,043 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-23 20:35:11,043 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-23 20:35:11,043 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-23 20:35:11,044 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-11-23 20:35:11,046 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-11-23 20:35:11,046 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-11-23 20:35:11,046 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-11-23 20:35:11,047 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-11-23 20:35:11,048 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-11-23 20:35:11,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:35:11,049 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-11-23 20:35:11,050 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-11-23 20:35:11,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:35:11,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:35:11,152 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:35:11,155 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:35:11,478 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:35:11,650 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:35:11,661 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 20:35:11,663 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:35:11 BoogieIcfgContainer [2023-11-23 20:35:11,664 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:35:11,667 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:35:11,668 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:35:11,672 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:35:11,673 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:35:10" (1/3) ... [2023-11-23 20:35:11,673 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2022ce1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:35:11, skipping insertion in model container [2023-11-23 20:35:11,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:35:10" (2/3) ... [2023-11-23 20:35:11,676 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2022ce1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:35:11, skipping insertion in model container [2023-11-23 20:35:11,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:35:11" (3/3) ... [2023-11-23 20:35:11,678 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product57.cil.c [2023-11-23 20:35:11,702 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:35:11,703 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 20:35:11,766 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:35:11,775 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;@27c78766, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:35:11,775 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 20:35:11,781 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 44 states have internal predecessors, (51), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-23 20:35:11,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-23 20:35:11,794 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:11,795 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:35:11,796 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:35:11,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:11,804 INFO L85 PathProgramCache]: Analyzing trace with hash -272895338, now seen corresponding path program 1 times [2023-11-23 20:35:11,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:11,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042167673] [2023-11-23 20:35:11,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:11,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:11,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:12,035 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 20:35:12,036 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:12,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042167673] [2023-11-23 20:35:12,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042167673] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:12,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:35:12,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 20:35:12,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738290507] [2023-11-23 20:35:12,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:12,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 20:35:12,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:12,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 20:35:12,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 20:35:12,120 INFO L87 Difference]: Start difference. First operand has 57 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 44 states have internal predecessors, (51), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 20:35:12,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:12,219 INFO L93 Difference]: Finished difference Result 112 states and 151 transitions. [2023-11-23 20:35:12,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 20:35:12,227 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 16 [2023-11-23 20:35:12,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:12,239 INFO L225 Difference]: With dead ends: 112 [2023-11-23 20:35:12,239 INFO L226 Difference]: Without dead ends: 52 [2023-11-23 20:35:12,246 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 20:35:12,255 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:12,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:35:12,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-11-23 20:35:12,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2023-11-23 20:35:12,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 33 states have (on average 1.303030303030303) internal successors, (43), 40 states have internal predecessors, (43), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-23 20:35:12,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2023-11-23 20:35:12,315 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 16 [2023-11-23 20:35:12,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:12,316 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2023-11-23 20:35:12,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 20:35:12,317 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2023-11-23 20:35:12,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-23 20:35:12,320 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:12,321 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 20:35:12,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 20:35:12,322 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:35:12,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:12,323 INFO L85 PathProgramCache]: Analyzing trace with hash 2100348772, now seen corresponding path program 1 times [2023-11-23 20:35:12,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:12,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731215300] [2023-11-23 20:35:12,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:12,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:12,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:12,516 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 20:35:12,516 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:12,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731215300] [2023-11-23 20:35:12,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731215300] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:12,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:35:12,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:35:12,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553910750] [2023-11-23 20:35:12,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:12,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:35:12,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:12,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:35:12,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:35:12,526 INFO L87 Difference]: Start difference. First operand 52 states and 66 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 20:35:12,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:12,593 INFO L93 Difference]: Finished difference Result 81 states and 103 transitions. [2023-11-23 20:35:12,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:35:12,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 20:35:12,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:12,596 INFO L225 Difference]: With dead ends: 81 [2023-11-23 20:35:12,596 INFO L226 Difference]: Without dead ends: 44 [2023-11-23 20:35:12,597 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 20:35:12,600 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 7 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:12,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 73 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 20:35:12,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-23 20:35:12,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-11-23 20:35:12,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 35 states have internal predecessors, (37), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 20:35:12,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2023-11-23 20:35:12,613 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 17 [2023-11-23 20:35:12,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:12,613 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2023-11-23 20:35:12,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 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 20:35:12,614 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2023-11-23 20:35:12,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-23 20:35:12,616 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:12,616 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:35:12,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 20:35:12,617 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:35:12,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:12,618 INFO L85 PathProgramCache]: Analyzing trace with hash 345337604, now seen corresponding path program 1 times [2023-11-23 20:35:12,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:12,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61497554] [2023-11-23 20:35:12,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:12,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:12,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:12,826 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 20:35:12,826 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:12,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61497554] [2023-11-23 20:35:12,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61497554] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:12,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:35:12,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:35:12,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967028647] [2023-11-23 20:35:12,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:12,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:35:12,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:12,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:35:12,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:35:12,830 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 20:35:12,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:12,877 INFO L93 Difference]: Finished difference Result 86 states and 109 transitions. [2023-11-23 20:35:12,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:35:12,879 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 19 [2023-11-23 20:35:12,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:12,881 INFO L225 Difference]: With dead ends: 86 [2023-11-23 20:35:12,881 INFO L226 Difference]: Without dead ends: 44 [2023-11-23 20:35:12,882 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 20:35:12,884 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 44 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:12,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 39 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 20:35:12,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-23 20:35:12,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-11-23 20:35:12,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 35 states have internal predecessors, (36), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-23 20:35:12,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 54 transitions. [2023-11-23 20:35:12,909 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 54 transitions. Word has length 19 [2023-11-23 20:35:12,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:12,910 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 54 transitions. [2023-11-23 20:35:12,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 20:35:12,910 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 54 transitions. [2023-11-23 20:35:12,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-23 20:35:12,912 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:12,912 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] [2023-11-23 20:35:12,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 20:35:12,913 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:35:12,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:12,916 INFO L85 PathProgramCache]: Analyzing trace with hash -802980982, now seen corresponding path program 1 times [2023-11-23 20:35:12,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:12,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851571384] [2023-11-23 20:35:12,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:12,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:12,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:13,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:35:13,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:13,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851571384] [2023-11-23 20:35:13,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851571384] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:13,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:35:13,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:35:13,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834976253] [2023-11-23 20:35:13,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:13,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:35:13,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:13,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:35:13,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:35:13,093 INFO L87 Difference]: Start difference. First operand 44 states and 54 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 20:35:13,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:13,175 INFO L93 Difference]: Finished difference Result 120 states and 150 transitions. [2023-11-23 20:35:13,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:35:13,176 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 22 [2023-11-23 20:35:13,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:13,178 INFO L225 Difference]: With dead ends: 120 [2023-11-23 20:35:13,178 INFO L226 Difference]: Without dead ends: 78 [2023-11-23 20:35:13,180 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 20:35:13,182 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 36 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:13,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 78 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:35:13,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-11-23 20:35:13,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2023-11-23 20:35:13,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 50 states have (on average 1.24) internal successors, (62), 57 states have internal predecessors, (62), 13 states have call successors, (13), 12 states have call predecessors, (13), 12 states have return successors, (17), 13 states have call predecessors, (17), 13 states have call successors, (17) [2023-11-23 20:35:13,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 92 transitions. [2023-11-23 20:35:13,217 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 92 transitions. Word has length 22 [2023-11-23 20:35:13,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:13,218 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 92 transitions. [2023-11-23 20:35:13,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 20:35:13,219 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 92 transitions. [2023-11-23 20:35:13,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-23 20:35:13,220 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:13,220 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:35:13,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 20:35:13,221 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:35:13,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:13,222 INFO L85 PathProgramCache]: Analyzing trace with hash -991009571, now seen corresponding path program 1 times [2023-11-23 20:35:13,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:13,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079206922] [2023-11-23 20:35:13,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:13,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:13,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:13,443 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 20:35:13,444 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:13,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079206922] [2023-11-23 20:35:13,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079206922] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:13,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:35:13,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 20:35:13,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004933925] [2023-11-23 20:35:13,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:13,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 20:35:13,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:13,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 20:35:13,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 20:35:13,448 INFO L87 Difference]: Start difference. First operand 76 states and 92 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 20:35:13,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:13,747 INFO L93 Difference]: Finished difference Result 102 states and 122 transitions. [2023-11-23 20:35:13,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 20:35:13,748 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2023-11-23 20:35:13,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:13,756 INFO L225 Difference]: With dead ends: 102 [2023-11-23 20:35:13,756 INFO L226 Difference]: Without dead ends: 100 [2023-11-23 20:35:13,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-23 20:35:13,765 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 57 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:13,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 113 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 20:35:13,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-11-23 20:35:13,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 94. [2023-11-23 20:35:13,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 63 states have (on average 1.2222222222222223) internal successors, (77), 70 states have internal predecessors, (77), 15 states have call successors, (15), 12 states have call predecessors, (15), 15 states have return successors, (22), 16 states have call predecessors, (22), 15 states have call successors, (22) [2023-11-23 20:35:13,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 114 transitions. [2023-11-23 20:35:13,824 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 114 transitions. Word has length 30 [2023-11-23 20:35:13,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:13,824 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 114 transitions. [2023-11-23 20:35:13,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 20:35:13,825 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 114 transitions. [2023-11-23 20:35:13,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-23 20:35:13,829 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:13,829 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] [2023-11-23 20:35:13,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 20:35:13,831 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:35:13,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:13,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1938263853, now seen corresponding path program 1 times [2023-11-23 20:35:13,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:13,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26677711] [2023-11-23 20:35:13,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:13,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:13,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:14,285 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 20:35:14,285 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:14,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26677711] [2023-11-23 20:35:14,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26677711] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:14,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:35:14,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 20:35:14,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342544421] [2023-11-23 20:35:14,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:14,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 20:35:14,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:14,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 20:35:14,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 20:35:14,289 INFO L87 Difference]: Start difference. First operand 94 states and 114 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 20:35:14,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:14,496 INFO L93 Difference]: Finished difference Result 240 states and 290 transitions. [2023-11-23 20:35:14,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 20:35:14,497 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 31 [2023-11-23 20:35:14,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:14,499 INFO L225 Difference]: With dead ends: 240 [2023-11-23 20:35:14,500 INFO L226 Difference]: Without dead ends: 148 [2023-11-23 20:35:14,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-23 20:35:14,502 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 79 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:14,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 175 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 20:35:14,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-11-23 20:35:14,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 130. [2023-11-23 20:35:14,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 87 states have (on average 1.1954022988505748) internal successors, (104), 95 states have internal predecessors, (104), 20 states have call successors, (20), 19 states have call predecessors, (20), 22 states have return successors, (27), 21 states have call predecessors, (27), 20 states have call successors, (27) [2023-11-23 20:35:14,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 151 transitions. [2023-11-23 20:35:14,533 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 151 transitions. Word has length 31 [2023-11-23 20:35:14,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:14,534 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 151 transitions. [2023-11-23 20:35:14,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-23 20:35:14,534 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 151 transitions. [2023-11-23 20:35:14,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-23 20:35:14,536 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:14,537 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] [2023-11-23 20:35:14,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 20:35:14,537 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:35:14,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:14,538 INFO L85 PathProgramCache]: Analyzing trace with hash 788946186, now seen corresponding path program 1 times [2023-11-23 20:35:14,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:14,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586412639] [2023-11-23 20:35:14,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:14,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:14,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:14,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 20:35:14,662 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:14,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586412639] [2023-11-23 20:35:14,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586412639] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:14,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:35:14,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 20:35:14,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344954207] [2023-11-23 20:35:14,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:14,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 20:35:14,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:14,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 20:35:14,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 20:35:14,665 INFO L87 Difference]: Start difference. First operand 130 states and 151 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 20:35:14,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:14,846 INFO L93 Difference]: Finished difference Result 384 states and 453 transitions. [2023-11-23 20:35:14,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 20:35:14,847 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2023-11-23 20:35:14,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:14,851 INFO L225 Difference]: With dead ends: 384 [2023-11-23 20:35:14,851 INFO L226 Difference]: Without dead ends: 256 [2023-11-23 20:35:14,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 20:35:14,853 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 31 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:14,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 168 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:35:14,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-11-23 20:35:14,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 242. [2023-11-23 20:35:14,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 163 states have (on average 1.165644171779141) internal successors, (190), 175 states have internal predecessors, (190), 37 states have call successors, (37), 35 states have call predecessors, (37), 41 states have return successors, (51), 39 states have call predecessors, (51), 37 states have call successors, (51) [2023-11-23 20:35:14,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 278 transitions. [2023-11-23 20:35:14,907 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 278 transitions. Word has length 34 [2023-11-23 20:35:14,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:14,908 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 278 transitions. [2023-11-23 20:35:14,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 20:35:14,909 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 278 transitions. [2023-11-23 20:35:14,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-23 20:35:14,911 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:14,911 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 20:35:14,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 20:35:14,912 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:35:14,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:14,913 INFO L85 PathProgramCache]: Analyzing trace with hash -302651709, now seen corresponding path program 1 times [2023-11-23 20:35:14,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:14,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158729585] [2023-11-23 20:35:14,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:14,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:14,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:15,447 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 20:35:15,448 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:15,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158729585] [2023-11-23 20:35:15,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158729585] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:35:15,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:35:15,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-23 20:35:15,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984240598] [2023-11-23 20:35:15,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:35:15,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 20:35:15,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:15,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 20:35:15,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-23 20:35:15,452 INFO L87 Difference]: Start difference. First operand 242 states and 278 transitions. Second operand has 13 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-23 20:35:16,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:16,401 INFO L93 Difference]: Finished difference Result 408 states and 491 transitions. [2023-11-23 20:35:16,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-23 20:35:16,403 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 37 [2023-11-23 20:35:16,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:16,408 INFO L225 Difference]: With dead ends: 408 [2023-11-23 20:35:16,408 INFO L226 Difference]: Without dead ends: 312 [2023-11-23 20:35:16,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=263, Invalid=729, Unknown=0, NotChecked=0, Total=992 [2023-11-23 20:35:16,412 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 331 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:16,414 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 159 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 20:35:16,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2023-11-23 20:35:16,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 280. [2023-11-23 20:35:16,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 189 states have (on average 1.1746031746031746) internal successors, (222), 203 states have internal predecessors, (222), 43 states have call successors, (43), 40 states have call predecessors, (43), 47 states have return successors, (62), 45 states have call predecessors, (62), 43 states have call successors, (62) [2023-11-23 20:35:16,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 327 transitions. [2023-11-23 20:35:16,497 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 327 transitions. Word has length 37 [2023-11-23 20:35:16,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:16,498 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 327 transitions. [2023-11-23 20:35:16,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-23 20:35:16,499 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 327 transitions. [2023-11-23 20:35:16,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-23 20:35:16,512 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:16,513 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-23 20:35:16,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 20:35:16,514 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:35:16,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:16,514 INFO L85 PathProgramCache]: Analyzing trace with hash 601557894, now seen corresponding path program 1 times [2023-11-23 20:35:16,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:16,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353976281] [2023-11-23 20:35:16,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:16,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:16,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:17,329 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-23 20:35:17,330 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:17,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353976281] [2023-11-23 20:35:17,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353976281] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:35:17,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017033835] [2023-11-23 20:35:17,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:17,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:35:17,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758265c2-0ace-42f9-b040-7173d7656c3c/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:35:17,333 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758265c2-0ace-42f9-b040-7173d7656c3c/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:35:17,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758265c2-0ace-42f9-b040-7173d7656c3c/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 20:35:17,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:17,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-23 20:35:17,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:35:17,983 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 20:35:17,984 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:35:18,572 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-23 20:35:18,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017033835] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:35:18,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1727409170] [2023-11-23 20:35:18,604 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2023-11-23 20:35:18,605 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 20:35:18,609 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 20:35:18,616 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 20:35:18,617 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 20:35:23,889 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 7 for LOIs [2023-11-23 20:35:23,893 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 7 for LOIs [2023-11-23 20:35:24,069 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 18 for LOIs [2023-11-23 20:35:24,211 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 1 for LOIs [2023-11-23 20:35:24,212 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 15 for LOIs [2023-11-23 20:35:24,218 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 10 for LOIs [2023-11-23 20:35:24,220 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 20:35:26,493 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3899#(and (<= 0 (+ |timeShift___utac_acc__Specification1_spec__1_~tmp~0#1| 2147483648)) (<= |timeShift___utac_acc__Specification1_spec__1_~tmp~0#1| 2147483647) (<= 0 (+ |timeShift___utac_acc__Specification1_spec__1_~tmp___0~0#1| 2147483648)) (or (and (= |timeShift___utac_acc__Specification1_spec__1_~tmp~0#1| ~methaneLevelCritical~0) (= |timeShift_isLowWaterLevel_#res#1| 0) (= |timeShift_isLowWaterSensorDry_#res#1| 1) (= ~waterLevel~0 0)) (and (= |timeShift___utac_acc__Specification1_spec__1_~tmp~0#1| ~methaneLevelCritical~0) (= |old(~pumpRunning~0)| 0))) (<= |timeShift___utac_acc__Specification1_spec__1_~tmp___0~0#1| 2147483647) (= |timeShift_isPumpRunning_#res#1| ~pumpRunning~0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification1_spec__1_~tmp___0~0#1|) (not (= |timeShift___utac_acc__Specification1_spec__1_~tmp~0#1| 0)) (not (= |timeShift___utac_acc__Specification1_spec__1_~tmp___0~0#1| 0)))' at error location [2023-11-23 20:35:26,493 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 20:35:26,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 20:35:26,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 26 [2023-11-23 20:35:26,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241930522] [2023-11-23 20:35:26,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 20:35:26,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-23 20:35:26,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:26,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-23 20:35:26,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=334, Invalid=2858, Unknown=0, NotChecked=0, Total=3192 [2023-11-23 20:35:26,498 INFO L87 Difference]: Start difference. First operand 280 states and 327 transitions. Second operand has 26 states, 23 states have (on average 3.782608695652174) internal successors, (87), 22 states have internal predecessors, (87), 11 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (21), 8 states have call predecessors, (21), 11 states have call successors, (21) [2023-11-23 20:35:28,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:28,523 INFO L93 Difference]: Finished difference Result 910 states and 1123 transitions. [2023-11-23 20:35:28,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-23 20:35:28,524 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 3.782608695652174) internal successors, (87), 22 states have internal predecessors, (87), 11 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (21), 8 states have call predecessors, (21), 11 states have call successors, (21) Word has length 65 [2023-11-23 20:35:28,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:28,533 INFO L225 Difference]: With dead ends: 910 [2023-11-23 20:35:28,533 INFO L226 Difference]: Without dead ends: 692 [2023-11-23 20:35:28,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 153 SyntacticMatches, 5 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2542 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=852, Invalid=5954, Unknown=0, NotChecked=0, Total=6806 [2023-11-23 20:35:28,543 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 614 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 1020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:28,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [618 Valid, 351 Invalid, 1020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 20:35:28,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2023-11-23 20:35:28,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 589. [2023-11-23 20:35:28,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 398 states have (on average 1.1658291457286432) internal successors, (464), 429 states have internal predecessors, (464), 91 states have call successors, (91), 79 states have call predecessors, (91), 99 states have return successors, (148), 99 states have call predecessors, (148), 91 states have call successors, (148) [2023-11-23 20:35:28,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 703 transitions. [2023-11-23 20:35:28,683 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 703 transitions. Word has length 65 [2023-11-23 20:35:28,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:28,683 INFO L495 AbstractCegarLoop]: Abstraction has 589 states and 703 transitions. [2023-11-23 20:35:28,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 3.782608695652174) internal successors, (87), 22 states have internal predecessors, (87), 11 states have call successors, (23), 9 states have call predecessors, (23), 9 states have return successors, (21), 8 states have call predecessors, (21), 11 states have call successors, (21) [2023-11-23 20:35:28,684 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 703 transitions. [2023-11-23 20:35:28,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-23 20:35:28,691 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:35:28,691 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:35:28,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758265c2-0ace-42f9-b040-7173d7656c3c/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 20:35:28,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758265c2-0ace-42f9-b040-7173d7656c3c/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:35:28,915 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 20:35:28,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:35:28,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1665248009, now seen corresponding path program 1 times [2023-11-23 20:35:28,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:35:28,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124608777] [2023-11-23 20:35:28,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:28,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:35:28,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:30,334 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 52 proven. 52 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-11-23 20:35:30,335 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:35:30,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124608777] [2023-11-23 20:35:30,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124608777] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 20:35:30,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135106665] [2023-11-23 20:35:30,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:35:30,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:35:30,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758265c2-0ace-42f9-b040-7173d7656c3c/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:35:30,337 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758265c2-0ace-42f9-b040-7173d7656c3c/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 20:35:30,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758265c2-0ace-42f9-b040-7173d7656c3c/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 20:35:30,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:35:30,494 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-23 20:35:30,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 20:35:31,424 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 68 proven. 71 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 20:35:31,425 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 20:35:32,702 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 73 proven. 32 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-23 20:35:32,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135106665] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 20:35:32,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1091725381] [2023-11-23 20:35:32,711 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2023-11-23 20:35:32,711 INFO L166 IcfgInterpreter]: Building call graph [2023-11-23 20:35:32,712 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-23 20:35:32,712 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-23 20:35:32,713 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-23 20:35:35,720 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 7 for LOIs [2023-11-23 20:35:35,724 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 7 for LOIs [2023-11-23 20:35:35,841 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 18 for LOIs [2023-11-23 20:35:35,932 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 1 for LOIs [2023-11-23 20:35:35,934 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 15 for LOIs [2023-11-23 20:35:35,938 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 10 for LOIs [2023-11-23 20:35:35,940 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-23 20:35:38,374 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6701#(and (= |timeShift___utac_acc__Specification1_spec__1_~tmp~0#1| ~methaneLevelCritical~0) (<= 0 (+ |timeShift___utac_acc__Specification1_spec__1_~tmp___0~0#1| 2147483648)) (<= |timeShift___utac_acc__Specification1_spec__1_~tmp___0~0#1| 2147483647) (= |timeShift_isPumpRunning_#res#1| ~pumpRunning~0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification1_spec__1_~tmp___0~0#1|) (<= ~methaneLevelCritical~0 2147483647) (not (= |timeShift___utac_acc__Specification1_spec__1_~tmp~0#1| 0)) (not (= |timeShift___utac_acc__Specification1_spec__1_~tmp___0~0#1| 0)) (<= 0 (+ ~methaneLevelCritical~0 2147483648)))' at error location [2023-11-23 20:35:38,374 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-23 20:35:38,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 20:35:38,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 17] total 43 [2023-11-23 20:35:38,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514519544] [2023-11-23 20:35:38,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 20:35:38,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-11-23 20:35:38,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:35:38,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-11-23 20:35:38,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=574, Invalid=4396, Unknown=0, NotChecked=0, Total=4970 [2023-11-23 20:35:38,382 INFO L87 Difference]: Start difference. First operand 589 states and 703 transitions. Second operand has 43 states, 41 states have (on average 4.2926829268292686) internal successors, (176), 40 states have internal predecessors, (176), 26 states have call successors, (39), 11 states have call predecessors, (39), 16 states have return successors, (39), 21 states have call predecessors, (39), 26 states have call successors, (39) [2023-11-23 20:35:39,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:35:39,529 INFO L93 Difference]: Finished difference Result 845 states and 1010 transitions. [2023-11-23 20:35:39,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-23 20:35:39,538 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 41 states have (on average 4.2926829268292686) internal successors, (176), 40 states have internal predecessors, (176), 26 states have call successors, (39), 11 states have call predecessors, (39), 16 states have return successors, (39), 21 states have call predecessors, (39), 26 states have call successors, (39) Word has length 114 [2023-11-23 20:35:39,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:35:39,539 INFO L225 Difference]: With dead ends: 845 [2023-11-23 20:35:39,539 INFO L226 Difference]: Without dead ends: 0 [2023-11-23 20:35:39,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 288 SyntacticMatches, 7 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2940 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1028, Invalid=6282, Unknown=0, NotChecked=0, Total=7310 [2023-11-23 20:35:39,546 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 380 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 20:35:39,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 297 Invalid, 796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 20:35:39,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-23 20:35:39,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-23 20:35:39,547 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 20:35:39,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-23 20:35:39,547 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 114 [2023-11-23 20:35:39,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:35:39,548 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-23 20:35:39,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 41 states have (on average 4.2926829268292686) internal successors, (176), 40 states have internal predecessors, (176), 26 states have call successors, (39), 11 states have call predecessors, (39), 16 states have return successors, (39), 21 states have call predecessors, (39), 26 states have call successors, (39) [2023-11-23 20:35:39,548 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-23 20:35:39,549 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-23 20:35:39,551 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 20:35:39,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758265c2-0ace-42f9-b040-7173d7656c3c/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 20:35:39,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758265c2-0ace-42f9-b040-7173d7656c3c/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 20:35:39,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-23 20:35:42,173 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 586 592) no Hoare annotation was computed. [2023-11-23 20:35:42,173 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 586 592) the Hoare annotation is: true [2023-11-23 20:35:42,173 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 897 908) the Hoare annotation is: (let ((.cse0 (= ~methaneLevelCritical~0 0)) (.cse1 (not (= 1 ~systemActive~0))) (.cse2 (and (not (= |old(~methaneLevelCritical~0)| 0)) (not (= |old(~methaneLevelCritical~0)| 1)))) (.cse3 (= ~methaneLevelCritical~0 1))) (and (or (not (= ~waterLevel~0 1)) (not (= ~pumpRunning~0 0)) .cse0 .cse1 .cse2 .cse3) (or .cse0 .cse1 .cse2 (not (= 2 ~waterLevel~0)) .cse3))) [2023-11-23 20:35:42,174 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 897 908) no Hoare annotation was computed. [2023-11-23 20:35:42,174 INFO L899 garLoopResultBuilder]: For program point L800(lines 775 804) no Hoare annotation was computed. [2023-11-23 20:35:42,174 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 775 804) no Hoare annotation was computed. [2023-11-23 20:35:42,174 INFO L899 garLoopResultBuilder]: For program point L796(line 796) no Hoare annotation was computed. [2023-11-23 20:35:42,174 INFO L899 garLoopResultBuilder]: For program point L789(lines 789 793) no Hoare annotation was computed. [2023-11-23 20:35:42,175 INFO L902 garLoopResultBuilder]: At program point L789-1(lines 789 793) the Hoare annotation is: true [2023-11-23 20:35:42,175 INFO L902 garLoopResultBuilder]: At program point L785-2(lines 785 799) the Hoare annotation is: true [2023-11-23 20:35:42,175 INFO L902 garLoopResultBuilder]: At program point L781(line 781) the Hoare annotation is: true [2023-11-23 20:35:42,175 INFO L899 garLoopResultBuilder]: For program point L781-1(line 781) no Hoare annotation was computed. [2023-11-23 20:35:42,175 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 775 804) the Hoare annotation is: true [2023-11-23 20:35:42,176 INFO L895 garLoopResultBuilder]: At program point L634(line 634) the Hoare annotation is: (let ((.cse0 (and (not (= ~methaneLevelCritical~0 0)) (not (= ~methaneLevelCritical~0 1)))) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 (not (= |old(~waterLevel~0)| 2))) (or (not (= |old(~pumpRunning~0)| 0)) (not (= |old(~waterLevel~0)| 1)) .cse0 .cse1))) [2023-11-23 20:35:42,176 INFO L899 garLoopResultBuilder]: For program point L65(lines 65 71) no Hoare annotation was computed. [2023-11-23 20:35:42,176 INFO L895 garLoopResultBuilder]: At program point L639(line 639) the Hoare annotation is: (let ((.cse1 (and (not (= ~methaneLevelCritical~0 0)) (not (= ~methaneLevelCritical~0 1)))) (.cse2 (not (= 1 ~systemActive~0))) (.cse3 (= ~pumpRunning~0 0)) (.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (not .cse0) (not (= |old(~waterLevel~0)| 1)) .cse1 .cse2 (and .cse3 (= ~waterLevel~0 1))) (or .cse1 .cse2 (not (= |old(~waterLevel~0)| 2)) (and .cse3 (= 2 ~waterLevel~0) .cse0)))) [2023-11-23 20:35:42,176 INFO L899 garLoopResultBuilder]: For program point L639-1(lines 620 644) no Hoare annotation was computed. [2023-11-23 20:35:42,176 INFO L899 garLoopResultBuilder]: For program point L61(lines 61 74) no Hoare annotation was computed. [2023-11-23 20:35:42,177 INFO L899 garLoopResultBuilder]: For program point L573-1(lines 573 579) no Hoare annotation was computed. [2023-11-23 20:35:42,177 INFO L899 garLoopResultBuilder]: For program point L61-1(lines 53 77) no Hoare annotation was computed. [2023-11-23 20:35:42,177 INFO L899 garLoopResultBuilder]: For program point L978(line 978) no Hoare annotation was computed. [2023-11-23 20:35:42,177 INFO L899 garLoopResultBuilder]: For program point L566-1(lines 565 584) no Hoare annotation was computed. [2023-11-23 20:35:42,177 INFO L899 garLoopResultBuilder]: For program point L628(lines 628 636) no Hoare annotation was computed. [2023-11-23 20:35:42,178 INFO L899 garLoopResultBuilder]: For program point L624(lines 624 641) no Hoare annotation was computed. [2023-11-23 20:35:42,178 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 562 585) the Hoare annotation is: (let ((.cse0 (and (not (= ~methaneLevelCritical~0 0)) (not (= ~methaneLevelCritical~0 1)))) (.cse1 (not (= 1 ~systemActive~0)))) (and (or (not (= |old(~pumpRunning~0)| 0)) (not (= |old(~waterLevel~0)| 1)) .cse0 .cse1 (and (= ~pumpRunning~0 0) (= ~waterLevel~0 1))) (or .cse0 .cse1 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= 2 ~waterLevel~0)) (not (= |old(~waterLevel~0)| 2))))) [2023-11-23 20:35:42,178 INFO L895 garLoopResultBuilder]: At program point L59(line 59) the Hoare annotation is: (let ((.cse7 (= ~methaneLevelCritical~0 1))) (let ((.cse3 (= ~pumpRunning~0 0)) (.cse8 (= 1 ~systemActive~0)) (.cse6 (= ~methaneLevelCritical~0 0)) (.cse9 (not .cse7))) (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (and (not .cse6) .cse9)) (.cse2 (not .cse8)) (.cse4 (not (= |old(~waterLevel~0)| 2))) (.cse5 (and (= 2 ~waterLevel~0) (or .cse6 .cse7) .cse8 (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse9) (or .cse3 .cse6)))) (and (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse1 .cse2 (and .cse3 (= ~waterLevel~0 1))) (or .cse1 .cse2 .cse4 (and .cse3 (= |old(~waterLevel~0)| (+ ~waterLevel~0 1))) .cse5) (or .cse0 .cse1 .cse2 .cse4 .cse5))))) [2023-11-23 20:35:42,178 INFO L899 garLoopResultBuilder]: For program point L59-1(line 59) no Hoare annotation was computed. [2023-11-23 20:35:42,179 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 562 585) no Hoare annotation was computed. [2023-11-23 20:35:42,179 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 978) no Hoare annotation was computed. [2023-11-23 20:35:42,179 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 909 917) the Hoare annotation is: true [2023-11-23 20:35:42,179 INFO L899 garLoopResultBuilder]: For program point isMethaneLevelCriticalEXIT(lines 909 917) no Hoare annotation was computed. [2023-11-23 20:35:42,179 INFO L895 garLoopResultBuilder]: At program point L543(lines 496 544) the Hoare annotation is: false [2023-11-23 20:35:42,180 INFO L899 garLoopResultBuilder]: For program point L498(lines 497 542) no Hoare annotation was computed. [2023-11-23 20:35:42,180 INFO L895 garLoopResultBuilder]: At program point L519(line 519) the Hoare annotation is: (let ((.cse0 (or (= ~methaneLevelCritical~0 0) (= ~methaneLevelCritical~0 1))) (.cse1 (= 1 ~systemActive~0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= ~pumpRunning~0 0) .cse0 .cse1 .cse2 (= ~waterLevel~0 1)) (and (= 2 ~waterLevel~0) .cse0 .cse1 .cse2))) [2023-11-23 20:35:42,180 INFO L895 garLoopResultBuilder]: At program point L540(lines 497 542) the Hoare annotation is: (let ((.cse1 (= ~methaneLevelCritical~0 0))) (let ((.cse4 (= ~pumpRunning~0 0)) (.cse0 (= 2 ~waterLevel~0)) (.cse5 (or .cse1 (= ~methaneLevelCritical~0 1))) (.cse2 (= 1 ~systemActive~0)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse5 .cse2 .cse3 (= ~waterLevel~0 1)) (and .cse4 .cse0 .cse5 .cse2 .cse3)))) [2023-11-23 20:35:42,180 INFO L899 garLoopResultBuilder]: For program point L507(lines 507 513) no Hoare annotation was computed. [2023-11-23 20:35:42,181 INFO L899 garLoopResultBuilder]: For program point L507-1(lines 507 513) no Hoare annotation was computed. [2023-11-23 20:35:42,181 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-23 20:35:42,181 INFO L895 garLoopResultBuilder]: At program point L533-2(lines 527 538) the Hoare annotation is: (let ((.cse0 (or (= ~methaneLevelCritical~0 0) (= ~methaneLevelCritical~0 1))) (.cse1 (= 1 ~systemActive~0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= ~pumpRunning~0 0) .cse0 .cse1 .cse2 (= ~waterLevel~0 1)) (and (= 2 ~waterLevel~0) .cse0 .cse1 .cse2))) [2023-11-23 20:35:42,181 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-23 20:35:42,181 INFO L899 garLoopResultBuilder]: For program point L517(lines 517 523) no Hoare annotation was computed. [2023-11-23 20:35:42,182 INFO L899 garLoopResultBuilder]: For program point L517-1(lines 517 523) no Hoare annotation was computed. [2023-11-23 20:35:42,182 INFO L899 garLoopResultBuilder]: For program point L546(lines 487 550) no Hoare annotation was computed. [2023-11-23 20:35:42,182 INFO L895 garLoopResultBuilder]: At program point L509(line 509) the Hoare annotation is: (let ((.cse1 (= ~methaneLevelCritical~0 0))) (let ((.cse4 (= ~pumpRunning~0 0)) (.cse0 (= 2 ~waterLevel~0)) (.cse5 (or .cse1 (= ~methaneLevelCritical~0 1))) (.cse2 (= 1 ~systemActive~0)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse5 .cse2 .cse3 (= ~waterLevel~0 1)) (and .cse4 .cse0 .cse5 .cse2 .cse3)))) [2023-11-23 20:35:42,182 INFO L899 garLoopResultBuilder]: For program point L856(lines 856 863) no Hoare annotation was computed. [2023-11-23 20:35:42,182 INFO L899 garLoopResultBuilder]: For program point L856-2(lines 856 863) no Hoare annotation was computed. [2023-11-23 20:35:42,183 INFO L895 garLoopResultBuilder]: At program point L684(line 684) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (and (not (= ~methaneLevelCritical~0 0)) (not (= ~methaneLevelCritical~0 1)))) (.cse2 (not (= 1 ~systemActive~0)))) (and (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse2) (or .cse0 .cse1 .cse2 (not (= 2 ~waterLevel~0)) (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~5#1| 1))))) [2023-11-23 20:35:42,183 INFO L899 garLoopResultBuilder]: For program point L684-1(line 684) no Hoare annotation was computed. [2023-11-23 20:35:42,183 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 594 618) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= ~pumpRunning~0 0)) (.cse2 (and (not (= ~methaneLevelCritical~0 0)) (not (= ~methaneLevelCritical~0 1)))) (.cse3 (not (= 1 ~systemActive~0)))) (and (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse2 .cse3) (or .cse0 .cse1 .cse2 .cse3 (not (= 2 ~waterLevel~0))))) [2023-11-23 20:35:42,183 INFO L895 garLoopResultBuilder]: At program point L608(line 608) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (and (not (= ~methaneLevelCritical~0 0)) (not (= ~methaneLevelCritical~0 1)))) (.cse2 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 .cse2 (not (= 2 ~waterLevel~0))) (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse2 (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~5#1| 0))))) [2023-11-23 20:35:42,184 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 594 618) no Hoare annotation was computed. [2023-11-23 20:35:42,184 INFO L899 garLoopResultBuilder]: For program point L602(lines 602 610) no Hoare annotation was computed. [2023-11-23 20:35:42,184 INFO L899 garLoopResultBuilder]: For program point L598(lines 598 615) no Hoare annotation was computed. [2023-11-23 20:35:42,184 INFO L895 garLoopResultBuilder]: At program point L613(line 613) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (and (not (= ~methaneLevelCritical~0 0)) (not (= ~methaneLevelCritical~0 1)))) (.cse2 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 .cse2 (not (= 2 ~waterLevel~0))) (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse2))) [2023-11-23 20:35:42,184 INFO L899 garLoopResultBuilder]: For program point L613-1(lines 594 618) no Hoare annotation was computed. [2023-11-23 20:35:42,185 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 885 896) no Hoare annotation was computed. [2023-11-23 20:35:42,185 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 885 896) the Hoare annotation is: (let ((.cse3 (not (= ~methaneLevelCritical~0 0)))) (let ((.cse0 (not (= ~pumpRunning~0 0))) (.cse1 (and .cse3 (not (= ~methaneLevelCritical~0 1)))) (.cse2 (not (= 1 ~systemActive~0)))) (and (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse1 .cse2 (= ~waterLevel~0 1)) (or (and .cse0 .cse3) (= 2 ~waterLevel~0) .cse1 .cse2 (not (= |old(~waterLevel~0)| 2)))))) [2023-11-23 20:35:42,188 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 20:35:42,191 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 20:35:42,207 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 08:35:42 BoogieIcfgContainer [2023-11-23 20:35:42,207 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 20:35:42,208 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 20:35:42,208 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 20:35:42,209 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 20:35:42,209 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:35:11" (3/4) ... [2023-11-23 20:35:42,212 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 20:35:42,216 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2023-11-23 20:35:42,217 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2023-11-23 20:35:42,217 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2023-11-23 20:35:42,217 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2023-11-23 20:35:42,217 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2023-11-23 20:35:42,218 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2023-11-23 20:35:42,218 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2023-11-23 20:35:42,228 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 46 nodes and edges [2023-11-23 20:35:42,229 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-11-23 20:35:42,230 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-23 20:35:42,231 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-23 20:35:42,232 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-23 20:35:42,268 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!((\old(pumpRunning) == 0)) || !((\old(waterLevel) == 1))) || (!((methaneLevelCritical == 0)) && !((methaneLevelCritical == 1)))) || !((1 == systemActive))) || ((pumpRunning == 0) && (waterLevel == 1))) && ((((!((methaneLevelCritical == 0)) && !((methaneLevelCritical == 1))) || !((1 == systemActive))) || ((pumpRunning == \old(pumpRunning)) && (2 == waterLevel))) || !((\old(waterLevel) == 2)))) [2023-11-23 20:35:42,314 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!((\old(pumpRunning) == 0)) || !((\old(waterLevel) == 1))) || (!((methaneLevelCritical == 0)) && !((methaneLevelCritical == 1)))) || !((1 == systemActive))) || ((pumpRunning == 0) && (waterLevel == 1))) && ((((!((methaneLevelCritical == 0)) && !((methaneLevelCritical == 1))) || !((1 == systemActive))) || ((pumpRunning == \old(pumpRunning)) && (2 == waterLevel))) || !((\old(waterLevel) == 2)))) [2023-11-23 20:35:42,402 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758265c2-0ace-42f9-b040-7173d7656c3c/bin/utaipan-verify-mE87zJ7Ire/witness.graphml [2023-11-23 20:35:42,403 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758265c2-0ace-42f9-b040-7173d7656c3c/bin/utaipan-verify-mE87zJ7Ire/witness.yml [2023-11-23 20:35:42,403 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 20:35:42,404 INFO L158 Benchmark]: Toolchain (without parser) took 32200.56ms. Allocated memory was 174.1MB in the beginning and 700.4MB in the end (delta: 526.4MB). Free memory was 144.4MB in the beginning and 618.5MB in the end (delta: -474.1MB). Peak memory consumption was 52.9MB. Max. memory is 16.1GB. [2023-11-23 20:35:42,405 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 125.8MB. Free memory is still 93.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 20:35:42,405 INFO L158 Benchmark]: CACSL2BoogieTranslator took 581.35ms. Allocated memory is still 174.1MB. Free memory was 144.4MB in the beginning and 124.8MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-23 20:35:42,405 INFO L158 Benchmark]: Boogie Procedure Inliner took 91.21ms. Allocated memory is still 174.1MB. Free memory was 124.8MB in the beginning and 122.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:35:42,406 INFO L158 Benchmark]: Boogie Preprocessor took 64.50ms. Allocated memory is still 174.1MB. Free memory was 122.8MB in the beginning and 120.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 20:35:42,406 INFO L158 Benchmark]: RCFGBuilder took 719.96ms. Allocated memory is still 174.1MB. Free memory was 120.7MB in the beginning and 92.8MB in the end (delta: 27.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-23 20:35:42,408 INFO L158 Benchmark]: TraceAbstraction took 30540.36ms. Allocated memory was 174.1MB in the beginning and 700.4MB in the end (delta: 526.4MB). Free memory was 92.6MB in the beginning and 625.8MB in the end (delta: -533.2MB). Peak memory consumption was 373.8MB. Max. memory is 16.1GB. [2023-11-23 20:35:42,408 INFO L158 Benchmark]: Witness Printer took 195.07ms. Allocated memory is still 700.4MB. Free memory was 625.8MB in the beginning and 618.5MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-23 20:35:42,412 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 125.8MB. Free memory is still 93.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 581.35ms. Allocated memory is still 174.1MB. Free memory was 144.4MB in the beginning and 124.8MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 91.21ms. Allocated memory is still 174.1MB. Free memory was 124.8MB in the beginning and 122.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.50ms. Allocated memory is still 174.1MB. Free memory was 122.8MB in the beginning and 120.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 719.96ms. Allocated memory is still 174.1MB. Free memory was 120.7MB in the beginning and 92.8MB in the end (delta: 27.9MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 30540.36ms. Allocated memory was 174.1MB in the beginning and 700.4MB in the end (delta: 526.4MB). Free memory was 92.6MB in the beginning and 625.8MB in the end (delta: -533.2MB). Peak memory consumption was 373.8MB. Max. memory is 16.1GB. * Witness Printer took 195.07ms. Allocated memory is still 700.4MB. Free memory was 625.8MB in the beginning and 618.5MB 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,"Specification1_spec.i","") [49] - GenericResultAtLocation [Line: 78]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [78] - GenericResultAtLocation [Line: 116]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [116] - GenericResultAtLocation [Line: 482]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [482] - GenericResultAtLocation [Line: 551]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [551] - GenericResultAtLocation [Line: 773]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [773] - GenericResultAtLocation [Line: 869]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [869] - GenericResultAtLocation [Line: 973]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [973] * 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: 978]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 57 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 30.4s, OverallIterations: 10, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1599 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1579 mSDsluCounter, 1508 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1091 mSDsCounter, 909 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1878 IncrementalHoareTripleChecker+Invalid, 2787 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 909 mSolverCounterUnsat, 417 mSDtfsCounter, 1878 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 696 GetRequests, 467 SyntacticMatches, 12 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5718 ImplicationChecksByTransitivity, 8.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=589occurred in iteration=9, InterpolantAutomatonStates: 112, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 10 MinimizatonAttempts, 175 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 21 LocationsWithAnnotation, 523 PreInvPairs, 567 NumberOfFragments, 791 HoareAnnotationTreeSize, 523 FomulaSimplifications, 6657 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 21 FomulaSimplificationsInter, 7845 FormulaSimplificationTreeSizeReductionInter, 2.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 564 NumberOfCodeBlocks, 564 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 729 ConstructedInterpolants, 0 QuantifiedInterpolants, 2908 SizeOfPredicates, 18 NumberOfNonLiveVariables, 652 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 14 InterpolantComputations, 8 PerfectInterpolantSequences, 332/510 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: 497]: Loop Invariant Derived loop invariant: ((((((2 == waterLevel) && (methaneLevelCritical == 0)) && (1 == systemActive)) && (splverifierCounter == 0)) || (((((pumpRunning == 0) && ((methaneLevelCritical == 0) || (methaneLevelCritical == 1))) && (1 == systemActive)) && (splverifierCounter == 0)) && (waterLevel == 1))) || (((((pumpRunning == 0) && (2 == waterLevel)) && ((methaneLevelCritical == 0) || (methaneLevelCritical == 1))) && (1 == systemActive)) && (splverifierCounter == 0))) - InvariantResult [Line: 496]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 785]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 562]: Loop Invariant Derived loop invariant: (((((!((\old(pumpRunning) == 0)) || !((\old(waterLevel) == 1))) || (!((methaneLevelCritical == 0)) && !((methaneLevelCritical == 1)))) || !((1 == systemActive))) || ((pumpRunning == 0) && (waterLevel == 1))) && ((((!((methaneLevelCritical == 0)) && !((methaneLevelCritical == 1))) || !((1 == systemActive))) || ((pumpRunning == \old(pumpRunning)) && (2 == waterLevel))) || !((\old(waterLevel) == 2)))) RESULT: Ultimate proved your program to be correct! [2023-11-23 20:35:42,470 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758265c2-0ace-42f9-b040-7173d7656c3c/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE