./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product36.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_8b30d39e-875e-4e40-8fbc-6adbf1e56ac7/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b30d39e-875e-4e40-8fbc-6adbf1e56ac7/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b30d39e-875e-4e40-8fbc-6adbf1e56ac7/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b30d39e-875e-4e40-8fbc-6adbf1e56ac7/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product36.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b30d39e-875e-4e40-8fbc-6adbf1e56ac7/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b30d39e-875e-4e40-8fbc-6adbf1e56ac7/bin/utaipan-verify-t7M7D8N6sZ --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 dae9a870dcbd894d53325794bcd1e36e0da0523a0c6f117be41bebebda51818a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:22:19,180 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:22:19,292 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b30d39e-875e-4e40-8fbc-6adbf1e56ac7/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 05:22:19,299 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:22:19,299 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:22:19,339 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:22:19,342 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:22:19,342 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:22:19,343 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:22:19,348 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:22:19,348 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:22:19,349 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:22:19,349 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:22:19,351 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:22:19,351 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:22:19,351 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:22:19,352 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:22:19,352 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:22:19,353 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:22:19,353 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:22:19,353 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:22:19,354 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:22:19,355 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:22:19,355 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:22:19,356 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:22:19,356 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:22:19,357 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:22:19,357 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:22:19,357 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:22:19,358 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:22:19,359 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:22:19,359 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:22:19,360 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:22:19,360 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:22:19,360 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:22:19,360 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:22:19,361 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:22:19,361 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:22:19,361 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:22:19,361 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:22:19,362 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:22:19,362 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:22:19,362 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:22:19,362 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:22:19,363 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:22:19,363 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_8b30d39e-875e-4e40-8fbc-6adbf1e56ac7/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b30d39e-875e-4e40-8fbc-6adbf1e56ac7/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dae9a870dcbd894d53325794bcd1e36e0da0523a0c6f117be41bebebda51818a [2023-11-19 05:22:19,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:22:19,715 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:22:19,718 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:22:19,720 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:22:19,721 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:22:19,723 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b30d39e-875e-4e40-8fbc-6adbf1e56ac7/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/product-lines/minepump_spec1_product36.cil.c [2023-11-19 05:22:22,965 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:22:23,245 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:22:23,245 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b30d39e-875e-4e40-8fbc-6adbf1e56ac7/sv-benchmarks/c/product-lines/minepump_spec1_product36.cil.c [2023-11-19 05:22:23,260 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b30d39e-875e-4e40-8fbc-6adbf1e56ac7/bin/utaipan-verify-t7M7D8N6sZ/data/988543923/358779b4931741efa130ea31489703b9/FLAGdd161ff70 [2023-11-19 05:22:23,275 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b30d39e-875e-4e40-8fbc-6adbf1e56ac7/bin/utaipan-verify-t7M7D8N6sZ/data/988543923/358779b4931741efa130ea31489703b9 [2023-11-19 05:22:23,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:22:23,279 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:22:23,281 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:22:23,281 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:22:23,287 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:22:23,288 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:22:23" (1/1) ... [2023-11-19 05:22:23,289 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fbafa1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:23, skipping insertion in model container [2023-11-19 05:22:23,290 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:22:23" (1/1) ... [2023-11-19 05:22:23,346 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:22:23,510 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_8b30d39e-875e-4e40-8fbc-6adbf1e56ac7/sv-benchmarks/c/product-lines/minepump_spec1_product36.cil.c[1605,1618] [2023-11-19 05:22:23,628 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:22:23,640 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:22:23,652 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [49] [2023-11-19 05:22:23,654 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [58] [2023-11-19 05:22:23,654 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [245] [2023-11-19 05:22:23,654 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [342] [2023-11-19 05:22:23,655 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [412] [2023-11-19 05:22:23,655 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [450] [2023-11-19 05:22:23,655 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [816] [2023-11-19 05:22:23,656 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [842] [2023-11-19 05:22:23,660 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_8b30d39e-875e-4e40-8fbc-6adbf1e56ac7/sv-benchmarks/c/product-lines/minepump_spec1_product36.cil.c[1605,1618] [2023-11-19 05:22:23,716 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:22:23,740 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:22:23,741 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:23 WrapperNode [2023-11-19 05:22:23,741 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:22:23,743 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:22:23,743 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:22:23,744 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:22:23,752 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:23" (1/1) ... [2023-11-19 05:22:23,782 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:23" (1/1) ... [2023-11-19 05:22:23,823 INFO L138 Inliner]: procedures = 54, calls = 96, calls flagged for inlining = 22, calls inlined = 19, statements flattened = 174 [2023-11-19 05:22:23,824 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:22:23,825 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:22:23,825 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:22:23,825 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:22:23,836 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:23" (1/1) ... [2023-11-19 05:22:23,837 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:23" (1/1) ... [2023-11-19 05:22:23,839 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:23" (1/1) ... [2023-11-19 05:22:23,839 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:23" (1/1) ... [2023-11-19 05:22:23,844 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:23" (1/1) ... [2023-11-19 05:22:23,849 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:23" (1/1) ... [2023-11-19 05:22:23,851 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:23" (1/1) ... [2023-11-19 05:22:23,853 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:23" (1/1) ... [2023-11-19 05:22:23,856 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:22:23,857 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:22:23,857 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:22:23,857 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:22:23,858 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:23" (1/1) ... [2023-11-19 05:22:23,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:22:23,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b30d39e-875e-4e40-8fbc-6adbf1e56ac7/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:22:23,904 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b30d39e-875e-4e40-8fbc-6adbf1e56ac7/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:22:23,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b30d39e-875e-4e40-8fbc-6adbf1e56ac7/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:22:23,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:22:23,960 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-11-19 05:22:23,961 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-11-19 05:22:23,962 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-19 05:22:23,962 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-19 05:22:23,962 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-11-19 05:22:23,962 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-11-19 05:22:23,963 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-19 05:22:23,963 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-19 05:22:23,963 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-11-19 05:22:23,964 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-11-19 05:22:23,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:22:23,964 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-11-19 05:22:23,965 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-11-19 05:22:23,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:22:23,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:22:24,087 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:22:24,093 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:22:24,388 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:22:24,537 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:22:24,546 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 05:22:24,552 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:22:24 BoogieIcfgContainer [2023-11-19 05:22:24,552 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:22:24,555 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:22:24,555 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:22:24,559 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:22:24,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:22:23" (1/3) ... [2023-11-19 05:22:24,562 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47c25b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:22:24, skipping insertion in model container [2023-11-19 05:22:24,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:22:23" (2/3) ... [2023-11-19 05:22:24,564 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47c25b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:22:24, skipping insertion in model container [2023-11-19 05:22:24,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:22:24" (3/3) ... [2023-11-19 05:22:24,566 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product36.cil.c [2023-11-19 05:22:24,587 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:22:24,587 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:22:24,642 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:22:24,650 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;@63a84022, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:22:24,651 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:22:24,656 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 31 states have (on average 1.4193548387096775) internal successors, (44), 37 states have internal predecessors, (44), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 05:22:24,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-19 05:22:24,664 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:22:24,665 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:22:24,666 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:22:24,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:22:24,672 INFO L85 PathProgramCache]: Analyzing trace with hash -901931762, now seen corresponding path program 1 times [2023-11-19 05:22:24,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:22:24,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405496440] [2023-11-19 05:22:24,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:22:24,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:22:24,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:22:24,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:22:24,878 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:22:24,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405496440] [2023-11-19 05:22:24,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405496440] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:22:24,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:22:24,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:22:24,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418172254] [2023-11-19 05:22:24,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:22:24,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 05:22:24,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:22:24,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 05:22:24,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:22:24,922 INFO L87 Difference]: Start difference. First operand has 48 states, 31 states have (on average 1.4193548387096775) internal successors, (44), 37 states have internal predecessors, (44), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 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) [2023-11-19 05:22:24,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:22:24,990 INFO L93 Difference]: Finished difference Result 94 states and 125 transitions. [2023-11-19 05:22:24,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 05:22:24,993 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 [2023-11-19 05:22:24,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:22:25,004 INFO L225 Difference]: With dead ends: 94 [2023-11-19 05:22:25,004 INFO L226 Difference]: Without dead ends: 43 [2023-11-19 05:22:25,008 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 [2023-11-19 05:22:25,013 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:22:25,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:22:25,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-11-19 05:22:25,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2023-11-19 05:22:25,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 33 states have internal predecessors, (36), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-19 05:22:25,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2023-11-19 05:22:25,061 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 16 [2023-11-19 05:22:25,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:22:25,062 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2023-11-19 05:22:25,062 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) [2023-11-19 05:22:25,063 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2023-11-19 05:22:25,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-19 05:22:25,065 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:22:25,065 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:22:25,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:22:25,066 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:22:25,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:22:25,067 INFO L85 PathProgramCache]: Analyzing trace with hash 334687557, now seen corresponding path program 1 times [2023-11-19 05:22:25,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:22:25,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826176847] [2023-11-19 05:22:25,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:22:25,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:22:25,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:22:25,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:22:25,174 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:22:25,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826176847] [2023-11-19 05:22:25,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826176847] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:22:25,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:22:25,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:22:25,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175488749] [2023-11-19 05:22:25,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:22:25,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:22:25,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:22:25,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:22:25,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:22:25,178 INFO L87 Difference]: Start difference. First operand 43 states and 53 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) [2023-11-19 05:22:25,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:22:25,214 INFO L93 Difference]: Finished difference Result 63 states and 77 transitions. [2023-11-19 05:22:25,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:22:25,214 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 [2023-11-19 05:22:25,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:22:25,216 INFO L225 Difference]: With dead ends: 63 [2023-11-19 05:22:25,216 INFO L226 Difference]: Without dead ends: 35 [2023-11-19 05:22:25,217 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 [2023-11-19 05:22:25,218 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 7 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:22:25,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 51 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:22:25,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-11-19 05:22:25,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-11-19 05:22:25,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 28 states have internal predecessors, (30), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 05:22:25,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2023-11-19 05:22:25,228 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 17 [2023-11-19 05:22:25,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:22:25,228 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2023-11-19 05:22:25,229 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) [2023-11-19 05:22:25,229 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2023-11-19 05:22:25,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 05:22:25,230 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:22:25,230 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:22:25,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:22:25,231 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:22:25,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:22:25,232 INFO L85 PathProgramCache]: Analyzing trace with hash -234197326, now seen corresponding path program 1 times [2023-11-19 05:22:25,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:22:25,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626173111] [2023-11-19 05:22:25,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:22:25,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:22:25,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:22:25,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:22:25,420 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:22:25,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626173111] [2023-11-19 05:22:25,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626173111] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:22:25,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:22:25,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 05:22:25,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006692828] [2023-11-19 05:22:25,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:22:25,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:22:25,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:22:25,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:22:25,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:22:25,425 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:22:25,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:22:25,563 INFO L93 Difference]: Finished difference Result 98 states and 121 transitions. [2023-11-19 05:22:25,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 05:22:25,564 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2023-11-19 05:22:25,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:22:25,566 INFO L225 Difference]: With dead ends: 98 [2023-11-19 05:22:25,566 INFO L226 Difference]: Without dead ends: 65 [2023-11-19 05:22:25,567 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 [2023-11-19 05:22:25,569 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 24 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:22:25,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 127 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:22:25,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-11-19 05:22:25,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 62. [2023-11-19 05:22:25,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 49 states have internal predecessors, (53), 11 states have call successors, (11), 9 states have call predecessors, (11), 9 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-19 05:22:25,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2023-11-19 05:22:25,590 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 19 [2023-11-19 05:22:25,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:22:25,591 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2023-11-19 05:22:25,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 05:22:25,592 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2023-11-19 05:22:25,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-19 05:22:25,594 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:22:25,595 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] [2023-11-19 05:22:25,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:22:25,595 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:22:25,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:22:25,602 INFO L85 PathProgramCache]: Analyzing trace with hash -905405791, now seen corresponding path program 1 times [2023-11-19 05:22:25,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:22:25,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728592154] [2023-11-19 05:22:25,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:22:25,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:22:25,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:22:26,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:22:26,036 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:22:26,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728592154] [2023-11-19 05:22:26,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728592154] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:22:26,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:22:26,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 05:22:26,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700482756] [2023-11-19 05:22:26,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:22:26,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 05:22:26,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:22:26,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 05:22:26,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:22:26,041 INFO L87 Difference]: Start difference. First operand 62 states and 75 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:22:26,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:22:26,399 INFO L93 Difference]: Finished difference Result 283 states and 348 transitions. [2023-11-19 05:22:26,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-19 05:22:26,400 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2023-11-19 05:22:26,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:22:26,409 INFO L225 Difference]: With dead ends: 283 [2023-11-19 05:22:26,410 INFO L226 Difference]: Without dead ends: 223 [2023-11-19 05:22:26,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-11-19 05:22:26,422 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 113 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:22:26,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 125 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:22:26,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2023-11-19 05:22:26,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 187. [2023-11-19 05:22:26,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 126 states have (on average 1.2380952380952381) internal successors, (156), 140 states have internal predecessors, (156), 29 states have call successors, (29), 29 states have call predecessors, (29), 31 states have return successors, (41), 29 states have call predecessors, (41), 29 states have call successors, (41) [2023-11-19 05:22:26,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 226 transitions. [2023-11-19 05:22:26,502 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 226 transitions. Word has length 22 [2023-11-19 05:22:26,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:22:26,502 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 226 transitions. [2023-11-19 05:22:26,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:22:26,503 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 226 transitions. [2023-11-19 05:22:26,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-19 05:22:26,515 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:22:26,515 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:22:26,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 05:22:26,516 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:22:26,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:22:26,517 INFO L85 PathProgramCache]: Analyzing trace with hash -890845561, now seen corresponding path program 1 times [2023-11-19 05:22:26,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:22:26,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854967318] [2023-11-19 05:22:26,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:22:26,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:22:26,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:22:26,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:22:26,841 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:22:26,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854967318] [2023-11-19 05:22:26,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854967318] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:22:26,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:22:26,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 05:22:26,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041120507] [2023-11-19 05:22:26,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:22:26,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:22:26,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:22:26,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:22:26,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:22:26,850 INFO L87 Difference]: Start difference. First operand 187 states and 226 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:22:26,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:22:26,987 INFO L93 Difference]: Finished difference Result 509 states and 616 transitions. [2023-11-19 05:22:26,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:22:26,988 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2023-11-19 05:22:26,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:22:26,996 INFO L225 Difference]: With dead ends: 509 [2023-11-19 05:22:26,996 INFO L226 Difference]: Without dead ends: 324 [2023-11-19 05:22:26,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:22:27,002 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 49 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:22:27,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 125 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:22:27,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2023-11-19 05:22:27,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 271. [2023-11-19 05:22:27,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 184 states have (on average 1.2173913043478262) internal successors, (224), 203 states have internal predecessors, (224), 40 states have call successors, (40), 40 states have call predecessors, (40), 46 states have return successors, (56), 40 states have call predecessors, (56), 40 states have call successors, (56) [2023-11-19 05:22:27,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 320 transitions. [2023-11-19 05:22:27,059 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 320 transitions. Word has length 25 [2023-11-19 05:22:27,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:22:27,060 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 320 transitions. [2023-11-19 05:22:27,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:22:27,060 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 320 transitions. [2023-11-19 05:22:27,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 05:22:27,062 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:22:27,062 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] [2023-11-19 05:22:27,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 05:22:27,062 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:22:27,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:22:27,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1675051968, now seen corresponding path program 1 times [2023-11-19 05:22:27,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:22:27,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37106772] [2023-11-19 05:22:27,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:22:27,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:22:27,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:22:27,081 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 05:22:27,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:22:27,122 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 05:22:27,123 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 05:22:27,124 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 05:22:27,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 05:22:27,129 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-19 05:22:27,133 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:22:27,157 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet23 could not be translated [2023-11-19 05:22:27,159 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret48 could not be translated [2023-11-19 05:22:27,173 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:22:27 BoogieIcfgContainer [2023-11-19 05:22:27,173 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:22:27,174 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:22:27,174 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:22:27,174 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:22:27,175 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:22:24" (3/4) ... [2023-11-19 05:22:27,176 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-19 05:22:27,192 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet23 could not be translated [2023-11-19 05:22:27,194 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret48 could not be translated [2023-11-19 05:22:27,267 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b30d39e-875e-4e40-8fbc-6adbf1e56ac7/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 05:22:27,268 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:22:27,269 INFO L158 Benchmark]: Toolchain (without parser) took 3990.12ms. Allocated memory was 144.7MB in the beginning and 201.3MB in the end (delta: 56.6MB). Free memory was 100.1MB in the beginning and 86.7MB in the end (delta: 13.4MB). Peak memory consumption was 72.0MB. Max. memory is 16.1GB. [2023-11-19 05:22:27,269 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 144.7MB. Free memory is still 119.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:22:27,270 INFO L158 Benchmark]: CACSL2BoogieTranslator took 461.35ms. Allocated memory is still 144.7MB. Free memory was 100.1MB in the beginning and 80.8MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 05:22:27,270 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.96ms. Allocated memory is still 144.7MB. Free memory was 80.8MB in the beginning and 78.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:22:27,270 INFO L158 Benchmark]: Boogie Preprocessor took 31.27ms. Allocated memory is still 144.7MB. Free memory was 78.7MB in the beginning and 77.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:22:27,271 INFO L158 Benchmark]: RCFGBuilder took 695.52ms. Allocated memory is still 144.7MB. Free memory was 77.1MB in the beginning and 97.3MB in the end (delta: -20.2MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. [2023-11-19 05:22:27,272 INFO L158 Benchmark]: TraceAbstraction took 2618.39ms. Allocated memory was 144.7MB in the beginning and 201.3MB in the end (delta: 56.6MB). Free memory was 96.6MB in the beginning and 89.8MB in the end (delta: 6.8MB). Peak memory consumption was 64.7MB. Max. memory is 16.1GB. [2023-11-19 05:22:27,272 INFO L158 Benchmark]: Witness Printer took 94.40ms. Allocated memory is still 201.3MB. Free memory was 89.8MB in the beginning and 86.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 05:22:27,276 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 144.7MB. Free memory is still 119.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 461.35ms. Allocated memory is still 144.7MB. Free memory was 100.1MB in the beginning and 80.8MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.96ms. Allocated memory is still 144.7MB. Free memory was 80.8MB in the beginning and 78.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.27ms. Allocated memory is still 144.7MB. Free memory was 78.7MB in the beginning and 77.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 695.52ms. Allocated memory is still 144.7MB. Free memory was 77.1MB in the beginning and 97.3MB in the end (delta: -20.2MB). Peak memory consumption was 9.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2618.39ms. Allocated memory was 144.7MB in the beginning and 201.3MB in the end (delta: 56.6MB). Free memory was 96.6MB in the beginning and 89.8MB in the end (delta: 6.8MB). Peak memory consumption was 64.7MB. Max. memory is 16.1GB. * Witness Printer took 94.40ms. Allocated memory is still 201.3MB. Free memory was 89.8MB in the beginning and 86.7MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 49]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [49] - GenericResultAtLocation [Line: 58]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [58] - GenericResultAtLocation [Line: 245]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [245] - GenericResultAtLocation [Line: 342]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [342] - GenericResultAtLocation [Line: 412]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [412] - GenericResultAtLocation [Line: 450]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [450] - GenericResultAtLocation [Line: 816]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [816] - GenericResultAtLocation [Line: 842]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [842] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet23 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret48 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet23 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret48 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 54]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L70] int pumpRunning = 0; [L71] int systemActive = 1; [L249] int waterLevel = 1; [L250] int methaneLevelCritical = 0; [L620] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L843] int cleanupTimeShifts = 4; [L916] int retValue_acc ; [L917] int tmp ; [L921] FCALL select_helpers() [L922] FCALL select_features() [L923] CALL, EXPR valid_product() [L442] int retValue_acc ; [L445] retValue_acc = 1 [L446] return (retValue_acc); [L923] RET, EXPR valid_product() [L923] tmp = valid_product() [L925] COND TRUE \read(tmp) [L927] FCALL setup() [L928] CALL runTest() [L910] CALL test() [L345] int splverifierCounter ; [L346] int tmp ; [L347] int tmp___0 ; [L348] int tmp___1 ; [L349] int tmp___2 ; [L352] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L354] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L356] COND TRUE splverifierCounter < 4 [L362] tmp = __VERIFIER_nondet_int() [L364] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L366] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L267] COND TRUE waterLevel < 2 [L268] waterLevel = waterLevel + 1 [L366] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L372] tmp___0 = __VERIFIER_nondet_int() [L374] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L376] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L279] COND FALSE !(\read(methaneLevelCritical)) [L282] methaneLevelCritical = 1 [L376] RET changeMethaneLevel() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L382] tmp___2 = __VERIFIER_nondet_int() [L384] COND FALSE !(\read(tmp___2)) [L390] tmp___1 = __VERIFIER_nondet_int() [L392] COND FALSE !(\read(tmp___1)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=1, tmp___1=0, tmp___2=0, waterLevel=2] [L401] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L78] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L85] COND TRUE \read(systemActive) [L87] CALL processEnvironment() [L107] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L110] COND TRUE ! pumpRunning [L112] CALL, EXPR isHighWaterLevel() [L204] int retValue_acc ; [L205] int tmp ; [L206] int tmp___0 ; [L210] CALL, EXPR isHighWaterSensorDry() [L329] int retValue_acc ; [L332] COND FALSE !(waterLevel < 2) [L336] retValue_acc = 0 [L337] return (retValue_acc); [L210] RET, EXPR isHighWaterSensorDry() [L210] tmp = isHighWaterSensorDry() [L212] COND FALSE !(\read(tmp)) [L215] tmp___0 = 1 [L217] retValue_acc = tmp___0 [L218] return (retValue_acc); [L112] RET, EXPR isHighWaterLevel() [L112] tmp = isHighWaterLevel() [L114] COND TRUE \read(tmp) [L116] CALL activatePump() [L135] pumpRunning = 1 [L116] RET activatePump() [L87] RET processEnvironment() [L93] CALL __utac_acc__Specification1_spec__1() [L818] int tmp ; [L819] int tmp___0 ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L823] CALL, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L288] int retValue_acc ; [L291] retValue_acc = methaneLevelCritical [L292] return (retValue_acc); [L823] RET, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L823] tmp = isMethaneLevelCritical() [L825] COND TRUE \read(tmp) [L827] CALL, EXPR isPumpRunning() [L159] int retValue_acc ; [L162] retValue_acc = pumpRunning [L163] return (retValue_acc); [L827] RET, EXPR isPumpRunning() [L827] tmp___0 = isPumpRunning() [L829] COND TRUE \read(tmp___0) [L831] CALL __automaton_fail() [L54] reach_error() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.5s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 200 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 193 mSDsluCounter, 472 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 301 mSDsCounter, 30 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 304 IncrementalHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 30 mSolverCounterUnsat, 171 mSDtfsCounter, 304 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=271occurred in iteration=5, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 92 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 253 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-19 05:22:27,321 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8b30d39e-875e-4e40-8fbc-6adbf1e56ac7/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE