./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product49.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ce4401-1b62-4ab7-b525-e63280e26a12/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ce4401-1b62-4ab7-b525-e63280e26a12/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_02ce4401-1b62-4ab7-b525-e63280e26a12/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ce4401-1b62-4ab7-b525-e63280e26a12/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product49.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ce4401-1b62-4ab7-b525-e63280e26a12/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_02ce4401-1b62-4ab7-b525-e63280e26a12/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 dcab8ddabad39d2c77c9d9341cfb89acc265e09aeb5bde0419f381c4b7bb75b6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:09:12,457 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:09:12,527 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ce4401-1b62-4ab7-b525-e63280e26a12/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 05:09:12,532 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:09:12,533 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:09:12,558 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:09:12,559 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:09:12,560 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:09:12,561 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:09:12,561 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:09:12,562 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:09:12,563 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:09:12,563 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:09:12,564 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:09:12,565 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:09:12,565 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:09:12,566 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:09:12,566 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:09:12,567 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:09:12,568 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:09:12,568 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:09:12,569 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:09:12,570 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:09:12,570 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:09:12,571 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:09:12,571 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:09:12,572 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:09:12,573 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:09:12,573 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:09:12,573 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:09:12,574 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:09:12,574 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:09:12,575 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:09:12,575 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:09:12,576 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:09:12,576 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:09:12,576 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:09:12,577 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:09:12,577 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:09:12,578 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:09:12,578 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:09:12,579 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:09:12,579 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:09:12,579 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:09:12,580 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:09:12,580 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_02ce4401-1b62-4ab7-b525-e63280e26a12/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ce4401-1b62-4ab7-b525-e63280e26a12/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dcab8ddabad39d2c77c9d9341cfb89acc265e09aeb5bde0419f381c4b7bb75b6 [2023-11-19 05:09:12,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:09:12,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:09:12,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:09:12,850 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:09:12,851 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:09:12,853 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ce4401-1b62-4ab7-b525-e63280e26a12/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/product-lines/minepump_spec4_product49.cil.c [2023-11-19 05:09:15,901 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:09:16,205 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:09:16,206 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ce4401-1b62-4ab7-b525-e63280e26a12/sv-benchmarks/c/product-lines/minepump_spec4_product49.cil.c [2023-11-19 05:09:16,228 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ce4401-1b62-4ab7-b525-e63280e26a12/bin/utaipan-verify-t7M7D8N6sZ/data/ac7b04468/674b1a07fb3b41f39806052cff865a87/FLAG20c33d761 [2023-11-19 05:09:16,247 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ce4401-1b62-4ab7-b525-e63280e26a12/bin/utaipan-verify-t7M7D8N6sZ/data/ac7b04468/674b1a07fb3b41f39806052cff865a87 [2023-11-19 05:09:16,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:09:16,260 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:09:16,264 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:09:16,265 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:09:16,271 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:09:16,272 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:09:16" (1/1) ... [2023-11-19 05:09:16,273 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fa1605f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:16, skipping insertion in model container [2023-11-19 05:09:16,274 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:09:16" (1/1) ... [2023-11-19 05:09:16,354 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:09:16,571 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_02ce4401-1b62-4ab7-b525-e63280e26a12/sv-benchmarks/c/product-lines/minepump_spec4_product49.cil.c[1605,1618] [2023-11-19 05:09:16,724 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:09:16,736 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:09:16,747 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [49] [2023-11-19 05:09:16,749 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [58] [2023-11-19 05:09:16,749 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [169] [2023-11-19 05:09:16,749 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [271] [2023-11-19 05:09:16,750 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [472] [2023-11-19 05:09:16,750 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [537] [2023-11-19 05:09:16,750 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification4_spec.i","") [572] [2023-11-19 05:09:16,750 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [598] [2023-11-19 05:09:16,755 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_02ce4401-1b62-4ab7-b525-e63280e26a12/sv-benchmarks/c/product-lines/minepump_spec4_product49.cil.c[1605,1618] [2023-11-19 05:09:16,810 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:09:16,832 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:09:16,832 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:16 WrapperNode [2023-11-19 05:09:16,832 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:09:16,834 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:09:16,834 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:09:16,834 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:09:16,842 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:16" (1/1) ... [2023-11-19 05:09:16,858 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:16" (1/1) ... [2023-11-19 05:09:16,893 INFO L138 Inliner]: procedures = 55, calls = 98, calls flagged for inlining = 24, calls inlined = 20, statements flattened = 204 [2023-11-19 05:09:16,893 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:09:16,894 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:09:16,894 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:09:16,895 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:09:16,904 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:16" (1/1) ... [2023-11-19 05:09:16,904 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:16" (1/1) ... [2023-11-19 05:09:16,907 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:16" (1/1) ... [2023-11-19 05:09:16,908 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:16" (1/1) ... [2023-11-19 05:09:16,935 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:16" (1/1) ... [2023-11-19 05:09:16,939 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:16" (1/1) ... [2023-11-19 05:09:16,941 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:16" (1/1) ... [2023-11-19 05:09:16,953 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:16" (1/1) ... [2023-11-19 05:09:16,956 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:09:16,960 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:09:16,961 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:09:16,961 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:09:16,962 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:16" (1/1) ... [2023-11-19 05:09:16,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:09:16,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ce4401-1b62-4ab7-b525-e63280e26a12/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:09:16,998 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ce4401-1b62-4ab7-b525-e63280e26a12/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:09:17,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ce4401-1b62-4ab7-b525-e63280e26a12/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:09:17,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:09:17,042 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-11-19 05:09:17,042 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-11-19 05:09:17,043 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-19 05:09:17,043 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-19 05:09:17,043 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-19 05:09:17,043 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-19 05:09:17,043 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-11-19 05:09:17,044 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-11-19 05:09:17,045 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-11-19 05:09:17,045 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-11-19 05:09:17,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:09:17,046 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-11-19 05:09:17,046 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-11-19 05:09:17,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:09:17,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:09:17,183 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:09:17,185 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:09:17,442 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:09:17,574 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:09:17,575 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 05:09:17,581 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:09:17 BoogieIcfgContainer [2023-11-19 05:09:17,582 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:09:17,585 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:09:17,585 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:09:17,588 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:09:17,589 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:09:16" (1/3) ... [2023-11-19 05:09:17,590 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41f389ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:09:17, skipping insertion in model container [2023-11-19 05:09:17,590 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:09:16" (2/3) ... [2023-11-19 05:09:17,592 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41f389ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:09:17, skipping insertion in model container [2023-11-19 05:09:17,592 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:09:17" (3/3) ... [2023-11-19 05:09:17,593 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product49.cil.c [2023-11-19 05:09:17,614 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:09:17,614 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:09:17,664 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:09:17,671 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;@5e2bf3c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:09:17,671 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:09:17,676 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 33 states have (on average 1.4545454545454546) internal successors, (48), 41 states have internal predecessors, (48), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-19 05:09:17,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-19 05:09:17,685 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:09:17,685 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:09:17,686 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:09:17,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:09:17,692 INFO L85 PathProgramCache]: Analyzing trace with hash -560859533, now seen corresponding path program 1 times [2023-11-19 05:09:17,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:09:17,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250887832] [2023-11-19 05:09:17,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:09:17,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:09:17,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:09:17,889 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 05:09:17,890 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:09:17,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250887832] [2023-11-19 05:09:17,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250887832] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:09:17,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:09:17,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:09:17,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729662397] [2023-11-19 05:09:17,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:09:17,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 05:09:17,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:09:17,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 05:09:17,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:09:17,948 INFO L87 Difference]: Start difference. First operand has 51 states, 33 states have (on average 1.4545454545454546) internal successors, (48), 41 states have internal predecessors, (48), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:09:18,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:09:18,035 INFO L93 Difference]: Finished difference Result 100 states and 137 transitions. [2023-11-19 05:09:18,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 05:09:18,039 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-19 05:09:18,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:09:18,050 INFO L225 Difference]: With dead ends: 100 [2023-11-19 05:09:18,051 INFO L226 Difference]: Without dead ends: 46 [2023-11-19 05:09:18,056 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 05:09:18,062 INFO L413 NwaCegarLoop]: 48 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, 48 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:09:18,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:09:18,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-11-19 05:09:18,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2023-11-19 05:09:18,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 37 states have internal predecessors, (40), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 05:09:18,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 59 transitions. [2023-11-19 05:09:18,125 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 59 transitions. Word has length 12 [2023-11-19 05:09:18,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:09:18,127 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 59 transitions. [2023-11-19 05:09:18,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:09:18,128 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 59 transitions. [2023-11-19 05:09:18,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 05:09:18,131 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:09:18,131 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:09:18,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:09:18,132 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:09:18,133 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:09:18,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1073368089, now seen corresponding path program 1 times [2023-11-19 05:09:18,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:09:18,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666307815] [2023-11-19 05:09:18,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:09:18,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:09:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:09:18,328 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 05:09:18,329 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:09:18,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666307815] [2023-11-19 05:09:18,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666307815] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:09:18,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:09:18,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:09:18,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481607787] [2023-11-19 05:09:18,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:09:18,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:09:18,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:09:18,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:09:18,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:09:18,334 INFO L87 Difference]: Start difference. First operand 46 states and 59 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:09:18,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:09:18,401 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2023-11-19 05:09:18,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:09:18,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-19 05:09:18,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:09:18,405 INFO L225 Difference]: With dead ends: 69 [2023-11-19 05:09:18,405 INFO L226 Difference]: Without dead ends: 38 [2023-11-19 05:09:18,406 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 05:09:18,407 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 7 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:09:18,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 59 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:09:18,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-11-19 05:09:18,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-11-19 05:09:18,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.36) internal successors, (34), 32 states have internal predecessors, (34), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-19 05:09:18,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2023-11-19 05:09:18,422 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 48 transitions. Word has length 13 [2023-11-19 05:09:18,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:09:18,423 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 48 transitions. [2023-11-19 05:09:18,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:09:18,424 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 48 transitions. [2023-11-19 05:09:18,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 05:09:18,426 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:09:18,426 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:09:18,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:09:18,427 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:09:18,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:09:18,428 INFO L85 PathProgramCache]: Analyzing trace with hash -471182599, now seen corresponding path program 1 times [2023-11-19 05:09:18,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:09:18,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846074541] [2023-11-19 05:09:18,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:09:18,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:09:18,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:09:18,567 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 05:09:18,568 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:09:18,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846074541] [2023-11-19 05:09:18,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846074541] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:09:18,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:09:18,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:09:18,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501518955] [2023-11-19 05:09:18,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:09:18,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:09:18,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:09:18,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:09:18,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:09:18,571 INFO L87 Difference]: Start difference. First operand 38 states and 48 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:09:18,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:09:18,636 INFO L93 Difference]: Finished difference Result 74 states and 95 transitions. [2023-11-19 05:09:18,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:09:18,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-19 05:09:18,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:09:18,640 INFO L225 Difference]: With dead ends: 74 [2023-11-19 05:09:18,640 INFO L226 Difference]: Without dead ends: 38 [2023-11-19 05:09:18,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 05:09:18,642 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 37 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 32 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 [2023-11-19 05:09:18,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 32 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:09:18,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-11-19 05:09:18,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-11-19 05:09:18,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.32) internal successors, (33), 32 states have internal predecessors, (33), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-19 05:09:18,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2023-11-19 05:09:18,656 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 15 [2023-11-19 05:09:18,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:09:18,656 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2023-11-19 05:09:18,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:09:18,656 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2023-11-19 05:09:18,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-19 05:09:18,657 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:09:18,658 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:09:18,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:09:18,658 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:09:18,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:09:18,659 INFO L85 PathProgramCache]: Analyzing trace with hash 692159194, now seen corresponding path program 1 times [2023-11-19 05:09:18,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:09:18,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388084697] [2023-11-19 05:09:18,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:09:18,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:09:18,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:09:18,824 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 05:09:18,824 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:09:18,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388084697] [2023-11-19 05:09:18,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388084697] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:09:18,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:09:18,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 05:09:18,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522835485] [2023-11-19 05:09:18,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:09:18,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:09:18,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:09:18,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:09:18,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 05:09:18,828 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:09:18,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:09:18,913 INFO L93 Difference]: Finished difference Result 104 states and 133 transitions. [2023-11-19 05:09:18,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 05:09:18,914 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-19 05:09:18,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:09:18,916 INFO L225 Difference]: With dead ends: 104 [2023-11-19 05:09:18,916 INFO L226 Difference]: Without dead ends: 68 [2023-11-19 05:09:18,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:09:18,919 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 35 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:09:18,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 101 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:09:18,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-11-19 05:09:18,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2023-11-19 05:09:18,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 52 states have internal predecessors, (56), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2023-11-19 05:09:18,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 80 transitions. [2023-11-19 05:09:18,942 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 80 transitions. Word has length 18 [2023-11-19 05:09:18,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:09:18,943 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 80 transitions. [2023-11-19 05:09:18,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 05:09:18,943 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 80 transitions. [2023-11-19 05:09:18,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-19 05:09:18,945 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:09:18,945 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] [2023-11-19 05:09:18,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 05:09:18,945 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:09:18,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:09:18,946 INFO L85 PathProgramCache]: Analyzing trace with hash 90837818, now seen corresponding path program 1 times [2023-11-19 05:09:18,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:09:18,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093940525] [2023-11-19 05:09:18,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:09:18,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:09:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:09:19,138 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 05:09:19,138 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:09:19,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093940525] [2023-11-19 05:09:19,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093940525] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:09:19,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:09:19,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 05:09:19,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011658675] [2023-11-19 05:09:19,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:09:19,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:09:19,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:09:19,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:09:19,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:09:19,142 INFO L87 Difference]: Start difference. First operand 66 states and 80 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 05:09:19,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:09:19,289 INFO L93 Difference]: Finished difference Result 191 states and 249 transitions. [2023-11-19 05:09:19,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 05:09:19,290 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), 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 23 [2023-11-19 05:09:19,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:09:19,293 INFO L225 Difference]: With dead ends: 191 [2023-11-19 05:09:19,294 INFO L226 Difference]: Without dead ends: 127 [2023-11-19 05:09:19,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:09:19,296 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 70 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:09:19,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 103 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:09:19,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-11-19 05:09:19,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 110. [2023-11-19 05:09:19,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 76 states have (on average 1.2105263157894737) internal successors, (92), 85 states have internal predecessors, (92), 16 states have call successors, (16), 16 states have call predecessors, (16), 17 states have return successors, (28), 16 states have call predecessors, (28), 16 states have call successors, (28) [2023-11-19 05:09:19,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 136 transitions. [2023-11-19 05:09:19,324 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 136 transitions. Word has length 23 [2023-11-19 05:09:19,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:09:19,325 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 136 transitions. [2023-11-19 05:09:19,325 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), 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 05:09:19,325 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 136 transitions. [2023-11-19 05:09:19,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-19 05:09:19,327 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:09:19,327 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:09:19,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 05:09:19,328 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:09:19,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:09:19,329 INFO L85 PathProgramCache]: Analyzing trace with hash -492625921, now seen corresponding path program 1 times [2023-11-19 05:09:19,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:09:19,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145557782] [2023-11-19 05:09:19,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:09:19,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:09:19,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:09:19,636 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 05:09:19,636 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:09:19,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145557782] [2023-11-19 05:09:19,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145557782] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:09:19,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:09:19,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 05:09:19,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77123915] [2023-11-19 05:09:19,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:09:19,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 05:09:19,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:09:19,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 05:09:19,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-19 05:09:19,648 INFO L87 Difference]: Start difference. First operand 110 states and 136 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:09:20,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:09:20,027 INFO L93 Difference]: Finished difference Result 349 states and 440 transitions. [2023-11-19 05:09:20,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 05:09:20,028 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2023-11-19 05:09:20,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:09:20,032 INFO L225 Difference]: With dead ends: 349 [2023-11-19 05:09:20,032 INFO L226 Difference]: Without dead ends: 241 [2023-11-19 05:09:20,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2023-11-19 05:09:20,035 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 92 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:09:20,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 190 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:09:20,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2023-11-19 05:09:20,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 224. [2023-11-19 05:09:20,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 157 states have (on average 1.2038216560509554) internal successors, (189), 173 states have internal predecessors, (189), 31 states have call successors, (31), 30 states have call predecessors, (31), 35 states have return successors, (59), 32 states have call predecessors, (59), 31 states have call successors, (59) [2023-11-19 05:09:20,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 279 transitions. [2023-11-19 05:09:20,085 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 279 transitions. Word has length 26 [2023-11-19 05:09:20,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:09:20,085 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 279 transitions. [2023-11-19 05:09:20,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:09:20,086 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 279 transitions. [2023-11-19 05:09:20,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-19 05:09:20,090 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:09:20,090 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:09:20,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 05:09:20,090 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:09:20,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:09:20,091 INFO L85 PathProgramCache]: Analyzing trace with hash -192336739, now seen corresponding path program 1 times [2023-11-19 05:09:20,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:09:20,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253171124] [2023-11-19 05:09:20,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:09:20,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:09:20,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:09:20,585 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:09:20,586 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:09:20,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253171124] [2023-11-19 05:09:20,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253171124] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:09:20,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055408720] [2023-11-19 05:09:20,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:09:20,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:09:20,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ce4401-1b62-4ab7-b525-e63280e26a12/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:09:20,593 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ce4401-1b62-4ab7-b525-e63280e26a12/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:09:20,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ce4401-1b62-4ab7-b525-e63280e26a12/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:09:20,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:09:20,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-19 05:09:20,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:09:21,261 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:09:21,261 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:09:21,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055408720] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:09:21,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:09:21,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [15] total 22 [2023-11-19 05:09:21,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142920164] [2023-11-19 05:09:21,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:09:21,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 05:09:21,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:09:21,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 05:09:21,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2023-11-19 05:09:21,264 INFO L87 Difference]: Start difference. First operand 224 states and 279 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-19 05:09:21,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:09:21,653 INFO L93 Difference]: Finished difference Result 484 states and 619 transitions. [2023-11-19 05:09:21,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 05:09:21,654 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 50 [2023-11-19 05:09:21,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:09:21,657 INFO L225 Difference]: With dead ends: 484 [2023-11-19 05:09:21,658 INFO L226 Difference]: Without dead ends: 292 [2023-11-19 05:09:21,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2023-11-19 05:09:21,660 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 109 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:09:21,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 108 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:09:21,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2023-11-19 05:09:21,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 224. [2023-11-19 05:09:21,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 159 states have (on average 1.1761006289308176) internal successors, (187), 170 states have internal predecessors, (187), 32 states have call successors, (32), 32 states have call predecessors, (32), 32 states have return successors, (45), 30 states have call predecessors, (45), 32 states have call successors, (45) [2023-11-19 05:09:21,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 264 transitions. [2023-11-19 05:09:21,704 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 264 transitions. Word has length 50 [2023-11-19 05:09:21,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:09:21,705 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 264 transitions. [2023-11-19 05:09:21,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-19 05:09:21,705 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 264 transitions. [2023-11-19 05:09:21,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-19 05:09:21,708 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:09:21,708 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:09:21,736 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ce4401-1b62-4ab7-b525-e63280e26a12/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 05:09:21,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ce4401-1b62-4ab7-b525-e63280e26a12/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-19 05:09:21,928 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:09:21,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:09:21,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1626441558, now seen corresponding path program 1 times [2023-11-19 05:09:21,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:09:21,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943496249] [2023-11-19 05:09:21,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:09:21,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:09:21,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:09:22,336 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:09:22,337 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:09:22,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943496249] [2023-11-19 05:09:22,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943496249] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:09:22,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408084109] [2023-11-19 05:09:22,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:09:22,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:09:22,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ce4401-1b62-4ab7-b525-e63280e26a12/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:09:22,339 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ce4401-1b62-4ab7-b525-e63280e26a12/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:09:22,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ce4401-1b62-4ab7-b525-e63280e26a12/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 05:09:22,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:09:22,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-19 05:09:22,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:09:22,702 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 05:09:22,702 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:09:23,107 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 05:09:23,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408084109] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:09:23,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [327498871] [2023-11-19 05:09:23,129 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2023-11-19 05:09:23,129 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:09:23,133 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:09:23,139 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:09:23,139 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:09:26,383 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 138 for LOIs [2023-11-19 05:09:26,503 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 24 for LOIs [2023-11-19 05:09:26,637 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 25 for LOIs [2023-11-19 05:09:26,729 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 26 for LOIs [2023-11-19 05:09:26,734 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:09:29,584 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3407#(and (<= ~pumpRunning~0 1) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~3#1| 0)) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~6#1| 0) (exists ((|v_ULTIMATE.start_test_~tmp___1~0#1_BEFORE_CALL_9| Int) (|v_ULTIMATE.start_test_~tmp___2~0#1_BEFORE_CALL_11| Int)) (and (or (and (<= 0 (+ |v_ULTIMATE.start_test_~tmp___1~0#1_BEFORE_CALL_9| 2147483648)) (<= |v_ULTIMATE.start_test_~tmp___1~0#1_BEFORE_CALL_9| 2147483647)) (not (= |v_ULTIMATE.start_test_~tmp___2~0#1_BEFORE_CALL_11| 0))) (<= 0 (+ |v_ULTIMATE.start_test_~tmp___2~0#1_BEFORE_CALL_11| 2147483648)) (<= |v_ULTIMATE.start_test_~tmp___2~0#1_BEFORE_CALL_11| 2147483647))) (= |old(~pumpRunning~0)| 0) (= |timeShift_isPumpRunning_#res#1| ~pumpRunning~0) (= |timeShift_getWaterLevel_#res#1| 0) (<= 0 ~pumpRunning~0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~3#1|) (= ~waterLevel~0 0) (= |old(~waterLevel~0)| 0) (not (= 0 ~systemActive~0)))' at error location [2023-11-19 05:09:29,584 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:09:29,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:09:29,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 9] total 25 [2023-11-19 05:09:29,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733969134] [2023-11-19 05:09:29,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:09:29,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-19 05:09:29,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:09:29,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-19 05:09:29,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=2141, Unknown=0, NotChecked=0, Total=2450 [2023-11-19 05:09:29,589 INFO L87 Difference]: Start difference. First operand 224 states and 264 transitions. Second operand has 25 states, 22 states have (on average 3.9545454545454546) internal successors, (87), 24 states have internal predecessors, (87), 12 states have call successors, (16), 8 states have call predecessors, (16), 9 states have return successors, (14), 12 states have call predecessors, (14), 10 states have call successors, (14) [2023-11-19 05:09:33,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:09:33,187 INFO L93 Difference]: Finished difference Result 1201 states and 1654 transitions. [2023-11-19 05:09:33,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2023-11-19 05:09:33,188 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 3.9545454545454546) internal successors, (87), 24 states have internal predecessors, (87), 12 states have call successors, (16), 8 states have call predecessors, (16), 9 states have return successors, (14), 12 states have call predecessors, (14), 10 states have call successors, (14) Word has length 50 [2023-11-19 05:09:33,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:09:33,197 INFO L225 Difference]: With dead ends: 1201 [2023-11-19 05:09:33,197 INFO L226 Difference]: Without dead ends: 1009 [2023-11-19 05:09:33,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5130 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=2032, Invalid=12010, Unknown=0, NotChecked=0, Total=14042 [2023-11-19 05:09:33,209 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 858 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 1400 mSolverCounterSat, 495 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 1895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 495 IncrementalHoareTripleChecker+Valid, 1400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:09:33,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 791 Invalid, 1895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [495 Valid, 1400 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-19 05:09:33,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2023-11-19 05:09:33,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 861. [2023-11-19 05:09:33,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 596 states have (on average 1.1828859060402686) internal successors, (705), 666 states have internal predecessors, (705), 153 states have call successors, (153), 104 states have call predecessors, (153), 111 states have return successors, (254), 137 states have call predecessors, (254), 153 states have call successors, (254) [2023-11-19 05:09:33,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1112 transitions. [2023-11-19 05:09:33,332 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1112 transitions. Word has length 50 [2023-11-19 05:09:33,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:09:33,332 INFO L495 AbstractCegarLoop]: Abstraction has 861 states and 1112 transitions. [2023-11-19 05:09:33,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 3.9545454545454546) internal successors, (87), 24 states have internal predecessors, (87), 12 states have call successors, (16), 8 states have call predecessors, (16), 9 states have return successors, (14), 12 states have call predecessors, (14), 10 states have call successors, (14) [2023-11-19 05:09:33,333 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1112 transitions. [2023-11-19 05:09:33,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-19 05:09:33,337 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:09:33,337 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:09:33,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ce4401-1b62-4ab7-b525-e63280e26a12/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:09:33,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ce4401-1b62-4ab7-b525-e63280e26a12/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:09:33,554 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:09:33,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:09:33,554 INFO L85 PathProgramCache]: Analyzing trace with hash -938271993, now seen corresponding path program 2 times [2023-11-19 05:09:33,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:09:33,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252718331] [2023-11-19 05:09:33,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:09:33,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:09:33,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:09:34,285 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 29 proven. 18 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 05:09:34,286 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:09:34,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252718331] [2023-11-19 05:09:34,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252718331] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:09:34,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394177302] [2023-11-19 05:09:34,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-19 05:09:34,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:09:34,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ce4401-1b62-4ab7-b525-e63280e26a12/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:09:34,289 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ce4401-1b62-4ab7-b525-e63280e26a12/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:09:34,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ce4401-1b62-4ab7-b525-e63280e26a12/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 05:09:34,378 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-19 05:09:34,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 05:09:34,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-19 05:09:34,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:09:34,484 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 05:09:34,485 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:09:34,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394177302] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:09:34,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:09:34,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 20 [2023-11-19 05:09:34,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204334250] [2023-11-19 05:09:34,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:09:34,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 05:09:34,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:09:34,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 05:09:34,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2023-11-19 05:09:34,488 INFO L87 Difference]: Start difference. First operand 861 states and 1112 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 05:09:34,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:09:34,701 INFO L93 Difference]: Finished difference Result 1745 states and 2256 transitions. [2023-11-19 05:09:34,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 05:09:34,702 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 74 [2023-11-19 05:09:34,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:09:34,709 INFO L225 Difference]: With dead ends: 1745 [2023-11-19 05:09:34,709 INFO L226 Difference]: Without dead ends: 862 [2023-11-19 05:09:34,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2023-11-19 05:09:34,715 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 32 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:09:34,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 167 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:09:34,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2023-11-19 05:09:34,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 643. [2023-11-19 05:09:34,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 457 states have (on average 1.1531728665207877) internal successors, (527), 493 states have internal predecessors, (527), 92 states have call successors, (92), 90 states have call predecessors, (92), 93 states have return successors, (129), 87 states have call predecessors, (129), 92 states have call successors, (129) [2023-11-19 05:09:34,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 748 transitions. [2023-11-19 05:09:34,818 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 748 transitions. Word has length 74 [2023-11-19 05:09:34,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:09:34,819 INFO L495 AbstractCegarLoop]: Abstraction has 643 states and 748 transitions. [2023-11-19 05:09:34,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 05:09:34,819 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 748 transitions. [2023-11-19 05:09:34,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-19 05:09:34,821 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:09:34,821 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:09:34,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ce4401-1b62-4ab7-b525-e63280e26a12/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 05:09:35,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ce4401-1b62-4ab7-b525-e63280e26a12/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:09:35,036 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:09:35,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:09:35,036 INFO L85 PathProgramCache]: Analyzing trace with hash 143645565, now seen corresponding path program 1 times [2023-11-19 05:09:35,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:09:35,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883359020] [2023-11-19 05:09:35,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:09:35,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:09:35,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:09:35,967 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 43 proven. 49 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-19 05:09:35,967 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:09:35,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883359020] [2023-11-19 05:09:35,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883359020] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:09:35,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168303136] [2023-11-19 05:09:35,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:09:35,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:09:35,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ce4401-1b62-4ab7-b525-e63280e26a12/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:09:35,973 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ce4401-1b62-4ab7-b525-e63280e26a12/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:09:35,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ce4401-1b62-4ab7-b525-e63280e26a12/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 05:09:36,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:09:36,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-19 05:09:36,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:09:36,762 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 48 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:09:36,762 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:09:37,669 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 65 proven. 26 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 05:09:37,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168303136] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:09:37,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [470491283] [2023-11-19 05:09:37,677 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2023-11-19 05:09:37,677 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:09:37,678 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:09:37,678 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:09:37,678 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:09:40,017 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 136 for LOIs [2023-11-19 05:09:40,143 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 24 for LOIs [2023-11-19 05:09:40,301 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 34 for LOIs [2023-11-19 05:09:40,380 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 26 for LOIs [2023-11-19 05:09:40,385 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:09:43,115 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10328#(and (<= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~3#1| 2147483647) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~3#1| 0)) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~6#1| 0) (<= 0 (+ |timeShift___utac_acc__Specification4_spec__1_~tmp___0~3#1| 2147483648)) (= |timeShift_isPumpRunning_#res#1| ~pumpRunning~0) (= |timeShift_getWaterLevel_#res#1| 0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~3#1|) (= ~waterLevel~0 0))' at error location [2023-11-19 05:09:43,115 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:09:43,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:09:43,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 18, 17] total 46 [2023-11-19 05:09:43,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521496008] [2023-11-19 05:09:43,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:09:43,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-11-19 05:09:43,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:09:43,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-11-19 05:09:43,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=641, Invalid=4329, Unknown=0, NotChecked=0, Total=4970 [2023-11-19 05:09:43,121 INFO L87 Difference]: Start difference. First operand 643 states and 748 transitions. Second operand has 46 states, 43 states have (on average 3.6511627906976742) internal successors, (157), 42 states have internal predecessors, (157), 17 states have call successors, (23), 11 states have call predecessors, (23), 17 states have return successors, (22), 16 states have call predecessors, (22), 17 states have call successors, (22) [2023-11-19 05:09:44,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:09:44,083 INFO L93 Difference]: Finished difference Result 770 states and 900 transitions. [2023-11-19 05:09:44,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-19 05:09:44,084 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 43 states have (on average 3.6511627906976742) internal successors, (157), 42 states have internal predecessors, (157), 17 states have call successors, (23), 11 states have call predecessors, (23), 17 states have return successors, (22), 16 states have call predecessors, (22), 17 states have call successors, (22) Word has length 87 [2023-11-19 05:09:44,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:09:44,087 INFO L225 Difference]: With dead ends: 770 [2023-11-19 05:09:44,087 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 05:09:44,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 208 SyntacticMatches, 7 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3039 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1136, Invalid=6174, Unknown=0, NotChecked=0, Total=7310 [2023-11-19 05:09:44,093 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 284 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:09:44,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 294 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 05:09:44,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 05:09:44,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 05:09:44,095 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) [2023-11-19 05:09:44,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 05:09:44,096 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 87 [2023-11-19 05:09:44,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:09:44,096 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 05:09:44,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 43 states have (on average 3.6511627906976742) internal successors, (157), 42 states have internal predecessors, (157), 17 states have call successors, (23), 11 states have call predecessors, (23), 17 states have return successors, (22), 16 states have call predecessors, (22), 17 states have call successors, (22) [2023-11-19 05:09:44,096 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 05:09:44,097 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 05:09:44,099 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 05:09:44,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ce4401-1b62-4ab7-b525-e63280e26a12/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 05:09:44,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ce4401-1b62-4ab7-b525-e63280e26a12/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:09:44,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-19 05:09:45,304 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 303 309) no Hoare annotation was computed. [2023-11-19 05:09:45,304 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 303 309) the Hoare annotation is: true [2023-11-19 05:09:45,304 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 93 104) the Hoare annotation is: true [2023-11-19 05:09:45,305 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 93 104) no Hoare annotation was computed. [2023-11-19 05:09:45,305 INFO L899 garLoopResultBuilder]: For program point L283-1(lines 282 301) no Hoare annotation was computed. [2023-11-19 05:09:45,305 INFO L899 garLoopResultBuilder]: For program point L345(lines 345 353) no Hoare annotation was computed. [2023-11-19 05:09:45,305 INFO L899 garLoopResultBuilder]: For program point L341(lines 341 358) no Hoare annotation was computed. [2023-11-19 05:09:45,305 INFO L899 garLoopResultBuilder]: For program point L585(lines 585 591) no Hoare annotation was computed. [2023-11-19 05:09:45,305 INFO L899 garLoopResultBuilder]: For program point L581(lines 581 594) no Hoare annotation was computed. [2023-11-19 05:09:45,305 INFO L899 garLoopResultBuilder]: For program point L581-1(lines 573 597) no Hoare annotation was computed. [2023-11-19 05:09:45,305 INFO L895 garLoopResultBuilder]: At program point L351(line 351) the Hoare annotation is: (let ((.cse1 (not (= |old(~waterLevel~0)| 2))) (.cse2 (not (= |old(~pumpRunning~0)| 0))) (.cse0 (not (= 1 ~systemActive~0)))) (and (or .cse0 (not (= |old(~pumpRunning~0)| 1)) .cse1) (or .cse2 .cse0 .cse1) (or .cse2 (not (= |old(~waterLevel~0)| 1)) .cse0))) [2023-11-19 05:09:45,305 INFO L899 garLoopResultBuilder]: For program point L54(line 54) no Hoare annotation was computed. [2023-11-19 05:09:45,306 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 279 302) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse2 (= ~pumpRunning~0 0)) (.cse1 (not (= 1 ~systemActive~0))) (.cse4 (not (= |old(~waterLevel~0)| 2))) (.cse3 (= 2 ~waterLevel~0))) (and (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse1 (and .cse2 (= ~waterLevel~0 1))) (or .cse0 .cse1 (and .cse2 .cse3) .cse4) (or .cse1 (not (= |old(~pumpRunning~0)| 1)) .cse4 (and .cse3 (= ~pumpRunning~0 1))))) [2023-11-19 05:09:45,306 INFO L895 garLoopResultBuilder]: At program point L356(line 356) the Hoare annotation is: (let ((.cse2 (not (= |old(~pumpRunning~0)| 0))) (.cse0 (not (= 1 ~systemActive~0))) (.cse3 (= ~pumpRunning~0 0)) (.cse1 (not (= |old(~waterLevel~0)| 2)))) (and (or .cse0 (not (= |old(~pumpRunning~0)| 1)) .cse1) (or .cse2 (not (= |old(~waterLevel~0)| 1)) .cse0 (and .cse3 (= ~waterLevel~0 1))) (or .cse2 .cse0 (and .cse3 (= 2 ~waterLevel~0)) .cse1))) [2023-11-19 05:09:45,306 INFO L899 garLoopResultBuilder]: For program point L356-1(lines 337 361) no Hoare annotation was computed. [2023-11-19 05:09:45,306 INFO L899 garLoopResultBuilder]: For program point L290-1(lines 290 296) no Hoare annotation was computed. [2023-11-19 05:09:45,306 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 279 302) no Hoare annotation was computed. [2023-11-19 05:09:45,306 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 54) no Hoare annotation was computed. [2023-11-19 05:09:45,306 INFO L899 garLoopResultBuilder]: For program point L193(line 193) no Hoare annotation was computed. [2023-11-19 05:09:45,306 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 172 201) no Hoare annotation was computed. [2023-11-19 05:09:45,306 INFO L899 garLoopResultBuilder]: For program point L186(lines 186 190) no Hoare annotation was computed. [2023-11-19 05:09:45,307 INFO L902 garLoopResultBuilder]: At program point L186-1(lines 186 190) the Hoare annotation is: true [2023-11-19 05:09:45,307 INFO L902 garLoopResultBuilder]: At program point L182-2(lines 182 196) the Hoare annotation is: true [2023-11-19 05:09:45,307 INFO L902 garLoopResultBuilder]: At program point L178(line 178) the Hoare annotation is: true [2023-11-19 05:09:45,307 INFO L899 garLoopResultBuilder]: For program point L178-1(line 178) no Hoare annotation was computed. [2023-11-19 05:09:45,307 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 172 201) the Hoare annotation is: true [2023-11-19 05:09:45,307 INFO L899 garLoopResultBuilder]: For program point L197(lines 172 201) no Hoare annotation was computed. [2023-11-19 05:09:45,307 INFO L899 garLoopResultBuilder]: For program point L258-2(lines 258 265) no Hoare annotation was computed. [2023-11-19 05:09:45,307 INFO L895 garLoopResultBuilder]: At program point L519-2(lines 513 524) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse3 (= 2 ~waterLevel~0)) (.cse1 (= 1 ~systemActive~0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 (= ~waterLevel~0 1)) (and .cse0 .cse3 .cse1 .cse2) (and .cse3 .cse1 .cse2 (= ~pumpRunning~0 1)))) [2023-11-19 05:09:45,307 INFO L899 garLoopResultBuilder]: For program point L503(lines 503 509) no Hoare annotation was computed. [2023-11-19 05:09:45,307 INFO L899 garLoopResultBuilder]: For program point L503-1(lines 503 509) no Hoare annotation was computed. [2023-11-19 05:09:45,307 INFO L899 garLoopResultBuilder]: For program point L532(lines 473 536) no Hoare annotation was computed. [2023-11-19 05:09:45,308 INFO L895 garLoopResultBuilder]: At program point L495(line 495) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= ~pumpRunning~0 0) .cse0 .cse1 (= ~waterLevel~0 1)) (and (= 2 ~waterLevel~0) .cse0 .cse1 (= ~pumpRunning~0 1)))) [2023-11-19 05:09:45,308 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-19 05:09:45,308 INFO L895 garLoopResultBuilder]: At program point L529(lines 482 530) the Hoare annotation is: false [2023-11-19 05:09:45,308 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-19 05:09:45,308 INFO L899 garLoopResultBuilder]: For program point L484(lines 483 528) no Hoare annotation was computed. [2023-11-19 05:09:45,308 INFO L895 garLoopResultBuilder]: At program point L505(line 505) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse3 (= 2 ~waterLevel~0)) (.cse1 (= 1 ~systemActive~0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 (= ~waterLevel~0 1)) (and .cse0 .cse3 .cse1 .cse2) (and .cse3 .cse1 .cse2 (= ~pumpRunning~0 1)))) [2023-11-19 05:09:45,308 INFO L895 garLoopResultBuilder]: At program point L526(lines 483 528) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= ~pumpRunning~0 0) .cse0 .cse1 (= ~waterLevel~0 1)) (and (= 2 ~waterLevel~0) .cse0 .cse1 (= ~pumpRunning~0 1)))) [2023-11-19 05:09:45,308 INFO L899 garLoopResultBuilder]: For program point L493(lines 493 499) no Hoare annotation was computed. [2023-11-19 05:09:45,308 INFO L899 garLoopResultBuilder]: For program point L493-1(lines 493 499) no Hoare annotation was computed. [2023-11-19 05:09:45,308 INFO L899 garLoopResultBuilder]: For program point L258(lines 258 265) no Hoare annotation was computed. [2023-11-19 05:09:45,309 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 311 335) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= ~pumpRunning~0 0)) (.cse2 (not (= 1 ~systemActive~0)))) (and (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse2) (or .cse0 .cse1 .cse2 (not (= 2 ~waterLevel~0))))) [2023-11-19 05:09:45,309 INFO L895 garLoopResultBuilder]: At program point L325(line 325) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 (not (= 2 ~waterLevel~0))) (or (not (= ~waterLevel~0 1)) .cse0 .cse1 (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~1#1| 0))))) [2023-11-19 05:09:45,309 INFO L899 garLoopResultBuilder]: For program point L319(lines 319 327) no Hoare annotation was computed. [2023-11-19 05:09:45,309 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 311 335) no Hoare annotation was computed. [2023-11-19 05:09:45,309 INFO L899 garLoopResultBuilder]: For program point L315(lines 315 332) no Hoare annotation was computed. [2023-11-19 05:09:45,309 INFO L895 garLoopResultBuilder]: At program point L330(line 330) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 (not (= 2 ~waterLevel~0))) (or (not (= ~waterLevel~0 1)) .cse0 .cse1))) [2023-11-19 05:09:45,309 INFO L899 garLoopResultBuilder]: For program point L330-1(lines 311 335) no Hoare annotation was computed. [2023-11-19 05:09:45,309 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 81 92) no Hoare annotation was computed. [2023-11-19 05:09:45,309 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 81 92) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0)))) (and (or (not (= ~pumpRunning~0 0)) (not (= |old(~waterLevel~0)| 1)) .cse0 (= ~waterLevel~0 1)) (or (= 2 ~waterLevel~0) .cse0 (not (= ~pumpRunning~0 1)) (not (= |old(~waterLevel~0)| 2))))) [2023-11-19 05:09:45,312 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:09:45,314 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:09:45,326 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:09:45 BoogieIcfgContainer [2023-11-19 05:09:45,327 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:09:45,327 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:09:45,327 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:09:45,328 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:09:45,328 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:09:17" (3/4) ... [2023-11-19 05:09:45,330 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 05:09:45,333 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2023-11-19 05:09:45,334 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2023-11-19 05:09:45,334 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2023-11-19 05:09:45,334 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2023-11-19 05:09:45,334 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2023-11-19 05:09:45,334 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2023-11-19 05:09:45,342 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 44 nodes and edges [2023-11-19 05:09:45,343 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-11-19 05:09:45,344 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-19 05:09:45,344 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 05:09:45,345 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 05:09:45,374 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!((\old(pumpRunning) == 0)) || !((\old(waterLevel) == 1))) || !((1 == systemActive))) || ((pumpRunning == 0) && (waterLevel == 1))) && (((!((\old(pumpRunning) == 0)) || !((1 == systemActive))) || ((pumpRunning == 0) && (2 == waterLevel))) || !((\old(waterLevel) == 2)))) && (((!((1 == systemActive)) || !((\old(pumpRunning) == 1))) || !((\old(waterLevel) == 2))) || ((2 == waterLevel) && (pumpRunning == 1)))) [2023-11-19 05:09:45,406 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!((\old(pumpRunning) == 0)) || !((\old(waterLevel) == 1))) || !((1 == systemActive))) || ((pumpRunning == 0) && (waterLevel == 1))) && (((!((\old(pumpRunning) == 0)) || !((1 == systemActive))) || ((pumpRunning == 0) && (2 == waterLevel))) || !((\old(waterLevel) == 2)))) && (((!((1 == systemActive)) || !((\old(pumpRunning) == 1))) || !((\old(waterLevel) == 2))) || ((2 == waterLevel) && (pumpRunning == 1)))) [2023-11-19 05:09:45,456 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ce4401-1b62-4ab7-b525-e63280e26a12/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 05:09:45,456 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ce4401-1b62-4ab7-b525-e63280e26a12/bin/utaipan-verify-t7M7D8N6sZ/witness.yml [2023-11-19 05:09:45,456 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:09:45,457 INFO L158 Benchmark]: Toolchain (without parser) took 29197.03ms. Allocated memory was 153.1MB in the beginning and 597.7MB in the end (delta: 444.6MB). Free memory was 109.1MB in the beginning and 518.3MB in the end (delta: -409.2MB). Peak memory consumption was 37.1MB. Max. memory is 16.1GB. [2023-11-19 05:09:45,457 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 104.9MB. Free memory was 51.0MB in the beginning and 50.8MB in the end (delta: 142.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:09:45,458 INFO L158 Benchmark]: CACSL2BoogieTranslator took 568.75ms. Allocated memory is still 153.1MB. Free memory was 109.1MB in the beginning and 89.6MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 05:09:45,458 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.07ms. Allocated memory is still 153.1MB. Free memory was 89.6MB in the beginning and 87.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:09:45,459 INFO L158 Benchmark]: Boogie Preprocessor took 64.87ms. Allocated memory is still 153.1MB. Free memory was 87.4MB in the beginning and 85.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:09:45,459 INFO L158 Benchmark]: RCFGBuilder took 621.73ms. Allocated memory is still 153.1MB. Free memory was 85.7MB in the beginning and 104.5MB in the end (delta: -18.8MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. [2023-11-19 05:09:45,459 INFO L158 Benchmark]: TraceAbstraction took 27741.89ms. Allocated memory was 153.1MB in the beginning and 597.7MB in the end (delta: 444.6MB). Free memory was 104.0MB in the beginning and 524.6MB in the end (delta: -420.6MB). Peak memory consumption was 340.2MB. Max. memory is 16.1GB. [2023-11-19 05:09:45,460 INFO L158 Benchmark]: Witness Printer took 129.17ms. Allocated memory is still 597.7MB. Free memory was 524.6MB in the beginning and 518.3MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-19 05:09:45,462 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 104.9MB. Free memory was 51.0MB in the beginning and 50.8MB in the end (delta: 142.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 568.75ms. Allocated memory is still 153.1MB. Free memory was 109.1MB in the beginning and 89.6MB in the end (delta: 19.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.07ms. Allocated memory is still 153.1MB. Free memory was 89.6MB in the beginning and 87.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.87ms. Allocated memory is still 153.1MB. Free memory was 87.4MB in the beginning and 85.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 621.73ms. Allocated memory is still 153.1MB. Free memory was 85.7MB in the beginning and 104.5MB in the end (delta: -18.8MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. * TraceAbstraction took 27741.89ms. Allocated memory was 153.1MB in the beginning and 597.7MB in the end (delta: 444.6MB). Free memory was 104.0MB in the beginning and 524.6MB in the end (delta: -420.6MB). Peak memory consumption was 340.2MB. Max. memory is 16.1GB. * Witness Printer took 129.17ms. Allocated memory is still 597.7MB. Free memory was 524.6MB in the beginning and 518.3MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 49]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [49] - GenericResultAtLocation [Line: 58]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [58] - GenericResultAtLocation [Line: 169]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [169] - GenericResultAtLocation [Line: 271]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [271] - GenericResultAtLocation [Line: 472]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [472] - GenericResultAtLocation [Line: 537]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [537] - GenericResultAtLocation [Line: 572]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification4_spec.i","") [572] - GenericResultAtLocation [Line: 598]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [598] * 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: 54]: 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 7 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 27.7s, OverallIterations: 10, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1543 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1524 mSDsluCounter, 1893 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1446 mSDsCounter, 803 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2878 IncrementalHoareTripleChecker+Invalid, 3681 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 803 mSolverCounterUnsat, 447 mSDtfsCounter, 2878 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 746 GetRequests, 469 SyntacticMatches, 9 SemanticMatches, 268 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8497 ImplicationChecksByTransitivity, 9.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=861occurred in iteration=8, InterpolantAutomatonStates: 149, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 10 MinimizatonAttempts, 471 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 750 PreInvPairs, 768 NumberOfFragments, 423 HoareAnnotationTreeSize, 750 FomulaSimplifications, 5565 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 18 FomulaSimplificationsInter, 2684 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.2s InterpolantComputationTime, 629 NumberOfCodeBlocks, 605 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 750 ConstructedInterpolants, 0 QuantifiedInterpolants, 3287 SizeOfPredicates, 25 NumberOfNonLiveVariables, 1010 ConjunctsInSsa, 91 ConjunctsInUnsatCore, 16 InterpolantComputations, 8 PerfectInterpolantSequences, 317/504 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: 482]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 182]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 483]: Loop Invariant Derived loop invariant: (((((pumpRunning == 0) && (1 == systemActive)) && (splverifierCounter == 0)) && (waterLevel == 1)) || ((((2 == waterLevel) && (1 == systemActive)) && (splverifierCounter == 0)) && (pumpRunning == 1))) - InvariantResult [Line: 279]: Loop Invariant Derived loop invariant: (((((!((\old(pumpRunning) == 0)) || !((\old(waterLevel) == 1))) || !((1 == systemActive))) || ((pumpRunning == 0) && (waterLevel == 1))) && (((!((\old(pumpRunning) == 0)) || !((1 == systemActive))) || ((pumpRunning == 0) && (2 == waterLevel))) || !((\old(waterLevel) == 2)))) && (((!((1 == systemActive)) || !((\old(pumpRunning) == 1))) || !((\old(waterLevel) == 2))) || ((2 == waterLevel) && (pumpRunning == 1)))) RESULT: Ultimate proved your program to be correct! [2023-11-19 05:09:45,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02ce4401-1b62-4ab7-b525-e63280e26a12/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE