./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product57.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8558ce-eb9d-4713-bc40-2ffe8d767c57/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8558ce-eb9d-4713-bc40-2ffe8d767c57/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_2e8558ce-eb9d-4713-bc40-2ffe8d767c57/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8558ce-eb9d-4713-bc40-2ffe8d767c57/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product57.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8558ce-eb9d-4713-bc40-2ffe8d767c57/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_2e8558ce-eb9d-4713-bc40-2ffe8d767c57/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 aba011a2dee79947f4cca7910fc4583b21e1f3cb9acd1affa050aa7677352666 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:11:06,156 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:11:06,310 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8558ce-eb9d-4713-bc40-2ffe8d767c57/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 05:11:06,321 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:11:06,321 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:11:06,380 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:11:06,381 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:11:06,382 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:11:06,383 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:11:06,383 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:11:06,384 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:11:06,387 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:11:06,388 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:11:06,394 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:11:06,395 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:11:06,396 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:11:06,398 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:11:06,398 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:11:06,399 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:11:06,399 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:11:06,400 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:11:06,401 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:11:06,402 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:11:06,403 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:11:06,403 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:11:06,404 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:11:06,404 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:11:06,405 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:11:06,405 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:11:06,405 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:11:06,407 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:11:06,408 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:11:06,408 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:11:06,408 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:11:06,408 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:11:06,409 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:11:06,409 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:11:06,409 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:11:06,410 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:11:06,410 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:11:06,410 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:11:06,410 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:11:06,411 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:11:06,411 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:11:06,412 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:11:06,412 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_2e8558ce-eb9d-4713-bc40-2ffe8d767c57/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8558ce-eb9d-4713-bc40-2ffe8d767c57/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aba011a2dee79947f4cca7910fc4583b21e1f3cb9acd1affa050aa7677352666 [2023-11-19 05:11:06,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:11:06,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:11:06,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:11:06,844 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:11:06,844 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:11:06,848 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8558ce-eb9d-4713-bc40-2ffe8d767c57/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/product-lines/minepump_spec5_product57.cil.c [2023-11-19 05:11:10,524 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:11:10,790 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:11:10,791 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8558ce-eb9d-4713-bc40-2ffe8d767c57/sv-benchmarks/c/product-lines/minepump_spec5_product57.cil.c [2023-11-19 05:11:10,809 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8558ce-eb9d-4713-bc40-2ffe8d767c57/bin/utaipan-verify-t7M7D8N6sZ/data/b797c8311/95bf84c2d4fc477884f640f07d41c2c2/FLAGc5a3bd871 [2023-11-19 05:11:10,827 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8558ce-eb9d-4713-bc40-2ffe8d767c57/bin/utaipan-verify-t7M7D8N6sZ/data/b797c8311/95bf84c2d4fc477884f640f07d41c2c2 [2023-11-19 05:11:10,830 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:11:10,832 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:11:10,834 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:11:10,834 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:11:10,841 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:11:10,842 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:11:10" (1/1) ... [2023-11-19 05:11:10,843 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cf5a5fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:10, skipping insertion in model container [2023-11-19 05:11:10,844 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:11:10" (1/1) ... [2023-11-19 05:11:10,898 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:11:11,143 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_2e8558ce-eb9d-4713-bc40-2ffe8d767c57/sv-benchmarks/c/product-lines/minepump_spec5_product57.cil.c[1605,1618] [2023-11-19 05:11:11,429 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:11:11,453 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:11:11,466 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [49] [2023-11-19 05:11:11,468 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [58] [2023-11-19 05:11:11,469 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [96] [2023-11-19 05:11:11,469 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [199] [2023-11-19 05:11:11,469 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [308] [2023-11-19 05:11:11,470 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification5_spec.i","") [674] [2023-11-19 05:11:11,470 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [724] [2023-11-19 05:11:11,471 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [789] [2023-11-19 05:11:11,476 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_2e8558ce-eb9d-4713-bc40-2ffe8d767c57/sv-benchmarks/c/product-lines/minepump_spec5_product57.cil.c[1605,1618] [2023-11-19 05:11:11,607 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:11:11,651 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:11:11,652 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:11 WrapperNode [2023-11-19 05:11:11,652 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:11:11,654 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:11:11,654 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:11:11,654 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:11:11,666 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:11" (1/1) ... [2023-11-19 05:11:11,704 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:11" (1/1) ... [2023-11-19 05:11:11,747 INFO L138 Inliner]: procedures = 58, calls = 103, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 232 [2023-11-19 05:11:11,748 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:11:11,749 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:11:11,749 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:11:11,749 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:11:11,763 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:11" (1/1) ... [2023-11-19 05:11:11,763 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:11" (1/1) ... [2023-11-19 05:11:11,767 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:11" (1/1) ... [2023-11-19 05:11:11,779 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:11" (1/1) ... [2023-11-19 05:11:11,787 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:11" (1/1) ... [2023-11-19 05:11:11,810 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:11" (1/1) ... [2023-11-19 05:11:11,812 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:11" (1/1) ... [2023-11-19 05:11:11,814 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:11" (1/1) ... [2023-11-19 05:11:11,818 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:11:11,820 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:11:11,820 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:11:11,820 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:11:11,830 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:11" (1/1) ... [2023-11-19 05:11:11,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:11:11,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8558ce-eb9d-4713-bc40-2ffe8d767c57/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:11:11,880 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8558ce-eb9d-4713-bc40-2ffe8d767c57/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:11:11,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8558ce-eb9d-4713-bc40-2ffe8d767c57/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:11:11,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:11:11,984 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-11-19 05:11:11,984 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-11-19 05:11:11,985 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-19 05:11:11,985 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-19 05:11:11,985 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-19 05:11:11,985 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-19 05:11:11,986 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-11-19 05:11:11,986 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-11-19 05:11:11,986 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-11-19 05:11:11,987 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-11-19 05:11:11,988 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2023-11-19 05:11:11,989 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2023-11-19 05:11:11,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:11:11,990 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-11-19 05:11:11,992 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-11-19 05:11:11,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:11:11,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:11:12,125 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:11:12,129 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:11:12,470 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:11:12,638 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:11:12,639 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 05:11:12,645 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:11:12 BoogieIcfgContainer [2023-11-19 05:11:12,645 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:11:12,649 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:11:12,649 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:11:12,653 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:11:12,654 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:11:10" (1/3) ... [2023-11-19 05:11:12,655 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@866a4d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:11:12, skipping insertion in model container [2023-11-19 05:11:12,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:11:11" (2/3) ... [2023-11-19 05:11:12,656 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@866a4d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:11:12, skipping insertion in model container [2023-11-19 05:11:12,656 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:11:12" (3/3) ... [2023-11-19 05:11:12,658 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product57.cil.c [2023-11-19 05:11:12,683 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:11:12,684 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:11:12,748 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:11:12,757 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;@1bf23e04, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:11:12,757 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:11:12,763 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 45 states have internal predecessors, (53), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 05:11:12,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-19 05:11:12,776 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:11:12,777 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:11:12,778 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:11:12,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:11:12,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1905688678, now seen corresponding path program 1 times [2023-11-19 05:11:12,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:11:12,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106347690] [2023-11-19 05:11:12,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:12,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:11:12,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:11:13,119 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:11:13,120 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:11:13,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106347690] [2023-11-19 05:11:13,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106347690] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:11:13,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:11:13,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:11:13,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330826516] [2023-11-19 05:11:13,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:11:13,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 05:11:13,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:11:13,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 05:11:13,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 05:11:13,185 INFO L87 Difference]: Start difference. First operand has 58 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 45 states have internal predecessors, (53), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:11:13,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:11:13,295 INFO L93 Difference]: Finished difference Result 114 states and 155 transitions. [2023-11-19 05:11:13,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 05:11:13,299 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2023-11-19 05:11:13,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:11:13,313 INFO L225 Difference]: With dead ends: 114 [2023-11-19 05:11:13,313 INFO L226 Difference]: Without dead ends: 53 [2023-11-19 05:11:13,320 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 05:11:13,330 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:11:13,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:11:13,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-11-19 05:11:13,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2023-11-19 05:11:13,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 41 states have internal predecessors, (45), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-19 05:11:13,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2023-11-19 05:11:13,407 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 21 [2023-11-19 05:11:13,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:11:13,408 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2023-11-19 05:11:13,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:11:13,409 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2023-11-19 05:11:13,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-19 05:11:13,415 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:11:13,415 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:11:13,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:11:13,416 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:11:13,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:11:13,417 INFO L85 PathProgramCache]: Analyzing trace with hash -479459809, now seen corresponding path program 1 times [2023-11-19 05:11:13,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:11:13,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064075348] [2023-11-19 05:11:13,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:13,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:11:13,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:11:13,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:11:13,553 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:11:13,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064075348] [2023-11-19 05:11:13,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064075348] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:11:13,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:11:13,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:11:13,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421959148] [2023-11-19 05:11:13,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:11:13,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:11:13,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:11:13,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:11:13,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:11:13,559 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:11:13,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:11:13,610 INFO L93 Difference]: Finished difference Result 83 states and 107 transitions. [2023-11-19 05:11:13,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:11:13,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2023-11-19 05:11:13,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:11:13,612 INFO L225 Difference]: With dead ends: 83 [2023-11-19 05:11:13,612 INFO L226 Difference]: Without dead ends: 45 [2023-11-19 05:11:13,613 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 05:11:13,615 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 7 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:11:13,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 77 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:11:13,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-11-19 05:11:13,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-11-19 05:11:13,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 36 states have internal predecessors, (39), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 05:11:13,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2023-11-19 05:11:13,625 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 22 [2023-11-19 05:11:13,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:11:13,626 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2023-11-19 05:11:13,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 05:11:13,627 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2023-11-19 05:11:13,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-19 05:11:13,628 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:11:13,628 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:11:13,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:11:13,629 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:11:13,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:11:13,630 INFO L85 PathProgramCache]: Analyzing trace with hash 2039399012, now seen corresponding path program 1 times [2023-11-19 05:11:13,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:11:13,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739996214] [2023-11-19 05:11:13,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:13,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:11:13,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:11:13,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:11:13,764 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:11:13,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739996214] [2023-11-19 05:11:13,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739996214] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:11:13,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:11:13,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:11:13,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885096429] [2023-11-19 05:11:13,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:11:13,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:11:13,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:11:13,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:11:13,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:11:13,771 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:11:13,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:11:13,840 INFO L93 Difference]: Finished difference Result 88 states and 113 transitions. [2023-11-19 05:11:13,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:11:13,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2023-11-19 05:11:13,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:11:13,842 INFO L225 Difference]: With dead ends: 88 [2023-11-19 05:11:13,843 INFO L226 Difference]: Without dead ends: 45 [2023-11-19 05:11:13,844 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 05:11:13,845 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 44 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 41 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 05:11:13,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 41 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 05:11:13,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-11-19 05:11:13,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-11-19 05:11:13,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 36 states have internal predecessors, (38), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-19 05:11:13,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2023-11-19 05:11:13,858 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 24 [2023-11-19 05:11:13,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:11:13,859 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2023-11-19 05:11:13,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:11:13,860 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2023-11-19 05:11:13,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-19 05:11:13,862 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:11:13,862 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:11:13,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 05:11:13,862 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:11:13,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:11:13,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1893297235, now seen corresponding path program 1 times [2023-11-19 05:11:13,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:11:13,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814159465] [2023-11-19 05:11:13,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:13,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:11:13,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:11:14,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 05:11:14,062 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:11:14,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814159465] [2023-11-19 05:11:14,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814159465] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:11:14,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:11:14,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 05:11:14,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196297445] [2023-11-19 05:11:14,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:11:14,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:11:14,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:11:14,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:11:14,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:11:14,066 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:11:14,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:11:14,325 INFO L93 Difference]: Finished difference Result 124 states and 158 transitions. [2023-11-19 05:11:14,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 05:11:14,326 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2023-11-19 05:11:14,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:11:14,333 INFO L225 Difference]: With dead ends: 124 [2023-11-19 05:11:14,333 INFO L226 Difference]: Without dead ends: 81 [2023-11-19 05:11:14,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-19 05:11:14,343 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 39 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:11:14,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 211 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:11:14,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-11-19 05:11:14,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2023-11-19 05:11:14,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 52 states have (on average 1.2307692307692308) internal successors, (64), 59 states have internal predecessors, (64), 14 states have call successors, (14), 12 states have call predecessors, (14), 12 states have return successors, (18), 14 states have call predecessors, (18), 14 states have call successors, (18) [2023-11-19 05:11:14,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 96 transitions. [2023-11-19 05:11:14,368 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 96 transitions. Word has length 27 [2023-11-19 05:11:14,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:11:14,368 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 96 transitions. [2023-11-19 05:11:14,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 05:11:14,371 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 96 transitions. [2023-11-19 05:11:14,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-19 05:11:14,375 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:11:14,376 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:11:14,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 05:11:14,376 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:11:14,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:11:14,377 INFO L85 PathProgramCache]: Analyzing trace with hash 964594852, now seen corresponding path program 1 times [2023-11-19 05:11:14,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:11:14,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691932169] [2023-11-19 05:11:14,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:14,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:11:14,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:11:14,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:11:14,679 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:11:14,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691932169] [2023-11-19 05:11:14,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691932169] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:11:14,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:11:14,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 05:11:14,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137932895] [2023-11-19 05:11:14,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:11:14,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:11:14,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:11:14,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:11:14,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:11:14,682 INFO L87 Difference]: Start difference. First operand 79 states and 96 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 05:11:14,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:11:14,944 INFO L93 Difference]: Finished difference Result 249 states and 312 transitions. [2023-11-19 05:11:14,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 05:11:14,945 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2023-11-19 05:11:14,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:11:14,948 INFO L225 Difference]: With dead ends: 249 [2023-11-19 05:11:14,948 INFO L226 Difference]: Without dead ends: 172 [2023-11-19 05:11:14,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-19 05:11:14,951 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 141 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:11:14,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 144 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:11:14,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-11-19 05:11:14,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 166. [2023-11-19 05:11:14,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 108 states have (on average 1.212962962962963) internal successors, (131), 119 states have internal predecessors, (131), 31 states have call successors, (31), 27 states have call predecessors, (31), 26 states have return successors, (43), 28 states have call predecessors, (43), 31 states have call successors, (43) [2023-11-19 05:11:14,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 205 transitions. [2023-11-19 05:11:14,995 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 205 transitions. Word has length 32 [2023-11-19 05:11:14,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:11:14,995 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 205 transitions. [2023-11-19 05:11:14,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 05:11:14,996 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 205 transitions. [2023-11-19 05:11:14,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-19 05:11:14,998 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:11:14,998 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:11:14,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 05:11:14,998 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:11:14,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:11:14,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1624590563, now seen corresponding path program 1 times [2023-11-19 05:11:14,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:11:15,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700864821] [2023-11-19 05:11:15,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:15,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:11:15,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:11:15,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:11:15,263 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:11:15,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700864821] [2023-11-19 05:11:15,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700864821] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:11:15,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:11:15,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 05:11:15,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25278735] [2023-11-19 05:11:15,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:11:15,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 05:11:15,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:11:15,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 05:11:15,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-19 05:11:15,275 INFO L87 Difference]: Start difference. First operand 166 states and 205 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 05:11:15,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:11:15,897 INFO L93 Difference]: Finished difference Result 528 states and 666 transitions. [2023-11-19 05:11:15,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-19 05:11:15,898 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 35 [2023-11-19 05:11:15,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:11:15,907 INFO L225 Difference]: With dead ends: 528 [2023-11-19 05:11:15,908 INFO L226 Difference]: Without dead ends: 364 [2023-11-19 05:11:15,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2023-11-19 05:11:15,911 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 141 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:11:15,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 256 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 05:11:15,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2023-11-19 05:11:16,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 325. [2023-11-19 05:11:16,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 214 states have (on average 1.1869158878504673) internal successors, (254), 236 states have internal predecessors, (254), 58 states have call successors, (58), 49 states have call predecessors, (58), 52 states have return successors, (82), 54 states have call predecessors, (82), 58 states have call successors, (82) [2023-11-19 05:11:16,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 394 transitions. [2023-11-19 05:11:16,024 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 394 transitions. Word has length 35 [2023-11-19 05:11:16,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:11:16,025 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 394 transitions. [2023-11-19 05:11:16,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 05:11:16,026 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 394 transitions. [2023-11-19 05:11:16,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-19 05:11:16,033 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:11:16,034 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:11:16,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 05:11:16,034 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:11:16,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:11:16,035 INFO L85 PathProgramCache]: Analyzing trace with hash 482445940, now seen corresponding path program 1 times [2023-11-19 05:11:16,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:11:16,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064985180] [2023-11-19 05:11:16,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:16,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:11:16,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:11:16,367 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-19 05:11:16,367 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:11:16,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064985180] [2023-11-19 05:11:16,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064985180] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:11:16,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035020205] [2023-11-19 05:11:16,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:16,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:11:16,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8558ce-eb9d-4713-bc40-2ffe8d767c57/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:11:16,374 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8558ce-eb9d-4713-bc40-2ffe8d767c57/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:11:16,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8558ce-eb9d-4713-bc40-2ffe8d767c57/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:11:16,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:11:16,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 05:11:16,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:11:16,737 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:11:16,737 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:11:16,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035020205] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:11:16,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:11:16,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2023-11-19 05:11:16,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429753576] [2023-11-19 05:11:16,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:11:16,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 05:11:16,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:11:16,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 05:11:16,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2023-11-19 05:11:16,741 INFO L87 Difference]: Start difference. First operand 325 states and 394 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 05:11:16,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:11:16,984 INFO L93 Difference]: Finished difference Result 798 states and 988 transitions. [2023-11-19 05:11:16,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 05:11:16,984 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 63 [2023-11-19 05:11:16,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:11:16,989 INFO L225 Difference]: With dead ends: 798 [2023-11-19 05:11:16,989 INFO L226 Difference]: Without dead ends: 537 [2023-11-19 05:11:16,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-11-19 05:11:16,991 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 41 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 05:11:16,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 256 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 05:11:16,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2023-11-19 05:11:17,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 490. [2023-11-19 05:11:17,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 318 states have (on average 1.1761006289308176) internal successors, (374), 351 states have internal predecessors, (374), 90 states have call successors, (90), 80 states have call predecessors, (90), 81 states have return successors, (140), 81 states have call predecessors, (140), 90 states have call successors, (140) [2023-11-19 05:11:17,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 604 transitions. [2023-11-19 05:11:17,059 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 604 transitions. Word has length 63 [2023-11-19 05:11:17,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:11:17,059 INFO L495 AbstractCegarLoop]: Abstraction has 490 states and 604 transitions. [2023-11-19 05:11:17,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-19 05:11:17,060 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 604 transitions. [2023-11-19 05:11:17,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-19 05:11:17,061 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:11:17,062 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:11:17,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8558ce-eb9d-4713-bc40-2ffe8d767c57/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:11:17,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8558ce-eb9d-4713-bc40-2ffe8d767c57/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:11:17,277 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:11:17,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:11:17,278 INFO L85 PathProgramCache]: Analyzing trace with hash 129793581, now seen corresponding path program 1 times [2023-11-19 05:11:17,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:11:17,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653130649] [2023-11-19 05:11:17,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:17,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:11:17,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:11:17,476 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 05:11:17,477 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:11:17,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653130649] [2023-11-19 05:11:17,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653130649] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:11:17,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:11:17,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 05:11:17,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362119483] [2023-11-19 05:11:17,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:11:17,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 05:11:17,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:11:17,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 05:11:17,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-11-19 05:11:17,481 INFO L87 Difference]: Start difference. First operand 490 states and 604 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-19 05:11:17,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:11:17,679 INFO L93 Difference]: Finished difference Result 895 states and 1110 transitions. [2023-11-19 05:11:17,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-19 05:11:17,680 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Word has length 63 [2023-11-19 05:11:17,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:11:17,686 INFO L225 Difference]: With dead ends: 895 [2023-11-19 05:11:17,686 INFO L226 Difference]: Without dead ends: 467 [2023-11-19 05:11:17,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-11-19 05:11:17,690 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 45 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:11:17,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 106 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 05:11:17,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2023-11-19 05:11:17,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 452. [2023-11-19 05:11:17,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 296 states have (on average 1.1722972972972974) internal successors, (347), 327 states have internal predecessors, (347), 78 states have call successors, (78), 69 states have call predecessors, (78), 77 states have return successors, (138), 74 states have call predecessors, (138), 78 states have call successors, (138) [2023-11-19 05:11:17,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 563 transitions. [2023-11-19 05:11:17,794 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 563 transitions. Word has length 63 [2023-11-19 05:11:17,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:11:17,794 INFO L495 AbstractCegarLoop]: Abstraction has 452 states and 563 transitions. [2023-11-19 05:11:17,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-19 05:11:17,796 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 563 transitions. [2023-11-19 05:11:17,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-19 05:11:17,798 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:11:17,798 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:11:17,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 05:11:17,799 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:11:17,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:11:17,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1235478567, now seen corresponding path program 1 times [2023-11-19 05:11:17,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:11:17,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963063499] [2023-11-19 05:11:17,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:17,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:11:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:11:18,221 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 05:11:18,222 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:11:18,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963063499] [2023-11-19 05:11:18,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963063499] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:11:18,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839946982] [2023-11-19 05:11:18,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:18,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:11:18,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8558ce-eb9d-4713-bc40-2ffe8d767c57/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:11:18,225 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8558ce-eb9d-4713-bc40-2ffe8d767c57/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:11:18,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8558ce-eb9d-4713-bc40-2ffe8d767c57/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 05:11:18,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:11:18,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-19 05:11:18,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:11:18,574 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 18 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 05:11:18,575 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:11:19,437 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-19 05:11:19,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839946982] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:11:19,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [306349832] [2023-11-19 05:11:19,461 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2023-11-19 05:11:19,461 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:11:19,465 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:11:19,470 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:11:19,471 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:11:23,587 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 22 for LOIs [2023-11-19 05:11:23,594 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 27 for LOIs [2023-11-19 05:11:24,111 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 1 for LOIs [2023-11-19 05:11:24,112 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 27 for LOIs [2023-11-19 05:11:24,233 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 28 for LOIs [2023-11-19 05:11:24,243 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:11:27,511 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6929#(and (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~0#1| 0)) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp~4#1| 2)) (= ~waterLevel~0 |timeShift_getWaterLevel_#res#1|) (<= ~pumpRunning~0 1) (= ~pumpRunning~0 |timeShift___utac_acc__Specification5_spec__3_~tmp___0~0#1|) (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) (<= 0 (+ |old(~waterLevel~0)| 2147483648)) (= |old(~waterLevel~0)| ~waterLevel~0) (<= |timeShift_getWaterLevel_#res#1| 2147483647) (<= 0 ~pumpRunning~0) (= |timeShift___utac_acc__Specification5_spec__3_~tmp~4#1| |timeShift_getWaterLevel_#res#1|) (= ~switchedOnBeforeTS~0 0) (not (= 0 ~systemActive~0)))' at error location [2023-11-19 05:11:27,511 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:11:27,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:11:27,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 21 [2023-11-19 05:11:27,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633395615] [2023-11-19 05:11:27,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:11:27,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-19 05:11:27,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:11:27,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-19 05:11:27,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=2055, Unknown=0, NotChecked=0, Total=2352 [2023-11-19 05:11:27,515 INFO L87 Difference]: Start difference. First operand 452 states and 563 transitions. Second operand has 21 states, 18 states have (on average 5.222222222222222) internal successors, (94), 20 states have internal predecessors, (94), 11 states have call successors, (24), 8 states have call predecessors, (24), 10 states have return successors, (23), 11 states have call predecessors, (23), 11 states have call successors, (23) [2023-11-19 05:11:29,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:11:29,550 INFO L93 Difference]: Finished difference Result 1374 states and 1876 transitions. [2023-11-19 05:11:29,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-11-19 05:11:29,555 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 5.222222222222222) internal successors, (94), 20 states have internal predecessors, (94), 11 states have call successors, (24), 8 states have call predecessors, (24), 10 states have return successors, (23), 11 states have call predecessors, (23), 11 states have call successors, (23) Word has length 68 [2023-11-19 05:11:29,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:11:29,571 INFO L225 Difference]: With dead ends: 1374 [2023-11-19 05:11:29,572 INFO L226 Difference]: Without dead ends: 977 [2023-11-19 05:11:29,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2402 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=829, Invalid=6143, Unknown=0, NotChecked=0, Total=6972 [2023-11-19 05:11:29,580 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 634 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 359 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 1510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 359 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:11:29,580 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [640 Valid, 822 Invalid, 1510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [359 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-19 05:11:29,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2023-11-19 05:11:29,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 731. [2023-11-19 05:11:29,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 480 states have (on average 1.1854166666666666) internal successors, (569), 530 states have internal predecessors, (569), 125 states have call successors, (125), 111 states have call predecessors, (125), 125 states have return successors, (224), 120 states have call predecessors, (224), 125 states have call successors, (224) [2023-11-19 05:11:29,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 918 transitions. [2023-11-19 05:11:29,678 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 918 transitions. Word has length 68 [2023-11-19 05:11:29,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:11:29,679 INFO L495 AbstractCegarLoop]: Abstraction has 731 states and 918 transitions. [2023-11-19 05:11:29,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 5.222222222222222) internal successors, (94), 20 states have internal predecessors, (94), 11 states have call successors, (24), 8 states have call predecessors, (24), 10 states have return successors, (23), 11 states have call predecessors, (23), 11 states have call successors, (23) [2023-11-19 05:11:29,679 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 918 transitions. [2023-11-19 05:11:29,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-19 05:11:29,682 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:11:29,682 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:11:29,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8558ce-eb9d-4713-bc40-2ffe8d767c57/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:11:29,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8558ce-eb9d-4713-bc40-2ffe8d767c57/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:11:29,897 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:11:29,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:11:29,898 INFO L85 PathProgramCache]: Analyzing trace with hash 133715440, now seen corresponding path program 1 times [2023-11-19 05:11:29,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:11:29,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492948484] [2023-11-19 05:11:29,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:29,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:11:29,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:11:30,219 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-19 05:11:30,219 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:11:30,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492948484] [2023-11-19 05:11:30,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492948484] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:11:30,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651661964] [2023-11-19 05:11:30,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:30,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:11:30,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8558ce-eb9d-4713-bc40-2ffe8d767c57/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:11:30,225 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8558ce-eb9d-4713-bc40-2ffe8d767c57/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:11:30,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8558ce-eb9d-4713-bc40-2ffe8d767c57/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 05:11:30,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:11:30,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 05:11:30,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:11:30,544 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 58 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 05:11:30,544 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:11:30,777 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 45 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-19 05:11:30,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651661964] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:11:30,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1219096247] [2023-11-19 05:11:30,781 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2023-11-19 05:11:30,781 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:11:30,782 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:11:30,782 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:11:30,782 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:11:34,272 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 26 for LOIs [2023-11-19 05:11:34,280 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 27 for LOIs [2023-11-19 05:11:34,520 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 34 for LOIs [2023-11-19 05:11:34,528 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 27 for LOIs [2023-11-19 05:11:34,618 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:11:37,263 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10388#(and (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~0#1| 0)) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp~4#1| 2)) (= ~waterLevel~0 |timeShift_getWaterLevel_#res#1|) (<= ~pumpRunning~0 1) (= ~pumpRunning~0 |timeShift___utac_acc__Specification5_spec__3_~tmp___0~0#1|) (<= 0 (+ 2147483648 |old(~pumpRunning~0)|)) (<= |old(~pumpRunning~0)| 2147483647) (<= 0 (+ 2147483648 |timeShift_getWaterLevel_#res#1|)) (<= |timeShift_getWaterLevel_#res#1| 2147483647) (<= 0 ~pumpRunning~0) (= |timeShift___utac_acc__Specification5_spec__3_~tmp~4#1| |timeShift_getWaterLevel_#res#1|) (= ~switchedOnBeforeTS~0 0))' at error location [2023-11-19 05:11:37,263 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:11:37,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:11:37,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 20 [2023-11-19 05:11:37,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781019570] [2023-11-19 05:11:37,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:11:37,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-19 05:11:37,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:11:37,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-19 05:11:37,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=2009, Unknown=0, NotChecked=0, Total=2256 [2023-11-19 05:11:37,267 INFO L87 Difference]: Start difference. First operand 731 states and 918 transitions. Second operand has 20 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 7 states have call successors, (18), 5 states have call predecessors, (18), 7 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2023-11-19 05:11:38,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:11:38,828 INFO L93 Difference]: Finished difference Result 1586 states and 2097 transitions. [2023-11-19 05:11:38,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-19 05:11:38,829 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 7 states have call successors, (18), 5 states have call predecessors, (18), 7 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) Word has length 80 [2023-11-19 05:11:38,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:11:38,843 INFO L225 Difference]: With dead ends: 1586 [2023-11-19 05:11:38,844 INFO L226 Difference]: Without dead ends: 872 [2023-11-19 05:11:38,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 214 SyntacticMatches, 4 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1877 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=662, Invalid=5190, Unknown=0, NotChecked=0, Total=5852 [2023-11-19 05:11:38,855 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 365 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 1365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 05:11:38,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 572 Invalid, 1365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 1140 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 05:11:38,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2023-11-19 05:11:38,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 654. [2023-11-19 05:11:38,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 433 states have (on average 1.1593533487297922) internal successors, (502), 472 states have internal predecessors, (502), 108 states have call successors, (108), 100 states have call predecessors, (108), 112 states have return successors, (158), 109 states have call predecessors, (158), 108 states have call successors, (158) [2023-11-19 05:11:38,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 768 transitions. [2023-11-19 05:11:38,949 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 768 transitions. Word has length 80 [2023-11-19 05:11:38,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:11:38,949 INFO L495 AbstractCegarLoop]: Abstraction has 654 states and 768 transitions. [2023-11-19 05:11:38,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 7 states have call successors, (18), 5 states have call predecessors, (18), 7 states have return successors, (19), 7 states have call predecessors, (19), 7 states have call successors, (19) [2023-11-19 05:11:38,950 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 768 transitions. [2023-11-19 05:11:38,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-19 05:11:38,952 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:11:38,952 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:11:38,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8558ce-eb9d-4713-bc40-2ffe8d767c57/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 05:11:39,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8558ce-eb9d-4713-bc40-2ffe8d767c57/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:11:39,165 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:11:39,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:11:39,166 INFO L85 PathProgramCache]: Analyzing trace with hash -65541378, now seen corresponding path program 1 times [2023-11-19 05:11:39,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:11:39,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497290563] [2023-11-19 05:11:39,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:39,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:11:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:11:40,029 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 12 proven. 35 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-19 05:11:40,029 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:11:40,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497290563] [2023-11-19 05:11:40,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497290563] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:11:40,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200932412] [2023-11-19 05:11:40,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:11:40,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:11:40,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8558ce-eb9d-4713-bc40-2ffe8d767c57/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:11:40,031 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8558ce-eb9d-4713-bc40-2ffe8d767c57/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:11:40,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8558ce-eb9d-4713-bc40-2ffe8d767c57/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 05:11:40,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:11:40,171 INFO L262 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-19 05:11:40,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:11:40,584 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 23 proven. 51 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:11:40,584 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:11:41,114 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 49 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-19 05:11:41,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200932412] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:11:41,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [990819655] [2023-11-19 05:11:41,119 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2023-11-19 05:11:41,120 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:11:41,120 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:11:41,121 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:11:41,121 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 05:11:43,811 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 15 for LOIs [2023-11-19 05:11:43,814 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 27 for LOIs [2023-11-19 05:11:44,019 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 34 for LOIs [2023-11-19 05:11:44,024 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 27 for LOIs [2023-11-19 05:11:44,091 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 05:11:46,931 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14049#(and (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~0#1| 0)) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp~4#1| 2)) (= ~waterLevel~0 |timeShift_getWaterLevel_#res#1|) (<= ~pumpRunning~0 1) (= ~pumpRunning~0 |timeShift___utac_acc__Specification5_spec__3_~tmp___0~0#1|) (<= 0 (+ 2147483648 |old(~pumpRunning~0)|)) (<= |old(~pumpRunning~0)| 2147483647) (<= 0 (+ 2147483648 |timeShift_getWaterLevel_#res#1|)) (<= |timeShift_getWaterLevel_#res#1| 2147483647) (<= 0 ~pumpRunning~0) (= |timeShift___utac_acc__Specification5_spec__3_~tmp~4#1| |timeShift_getWaterLevel_#res#1|) (= ~switchedOnBeforeTS~0 0))' at error location [2023-11-19 05:11:46,931 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-19 05:11:46,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 05:11:46,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 11] total 28 [2023-11-19 05:11:46,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751415861] [2023-11-19 05:11:46,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 05:11:46,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-19 05:11:46,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:11:46,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-19 05:11:46,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=2576, Unknown=0, NotChecked=0, Total=2862 [2023-11-19 05:11:46,935 INFO L87 Difference]: Start difference. First operand 654 states and 768 transitions. Second operand has 28 states, 27 states have (on average 5.333333333333333) internal successors, (144), 27 states have internal predecessors, (144), 13 states have call successors, (27), 8 states have call predecessors, (27), 12 states have return successors, (26), 13 states have call predecessors, (26), 13 states have call successors, (26) [2023-11-19 05:11:47,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:11:47,939 INFO L93 Difference]: Finished difference Result 846 states and 986 transitions. [2023-11-19 05:11:47,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-19 05:11:47,940 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 5.333333333333333) internal successors, (144), 27 states have internal predecessors, (144), 13 states have call successors, (27), 8 states have call predecessors, (27), 12 states have return successors, (26), 13 states have call predecessors, (26), 13 states have call successors, (26) Word has length 85 [2023-11-19 05:11:47,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:11:47,941 INFO L225 Difference]: With dead ends: 846 [2023-11-19 05:11:47,941 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 05:11:47,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 217 SyntacticMatches, 11 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1711 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=593, Invalid=4377, Unknown=0, NotChecked=0, Total=4970 [2023-11-19 05:11:47,946 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 299 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 05:11:47,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 266 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 05:11:47,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 05:11:47,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 05:11:47,947 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 05:11:47,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 05:11:47,948 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 85 [2023-11-19 05:11:47,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:11:47,948 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 05:11:47,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 5.333333333333333) internal successors, (144), 27 states have internal predecessors, (144), 13 states have call successors, (27), 8 states have call predecessors, (27), 12 states have return successors, (26), 13 states have call predecessors, (26), 13 states have call successors, (26) [2023-11-19 05:11:47,949 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 05:11:47,949 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 05:11:47,951 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-19 05:11:47,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8558ce-eb9d-4713-bc40-2ffe8d767c57/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 05:11:48,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8558ce-eb9d-4713-bc40-2ffe8d767c57/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:11:48,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-19 05:11:49,362 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 822 828) no Hoare annotation was computed. [2023-11-19 05:11:49,362 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 822 828) the Hoare annotation is: true [2023-11-19 05:11:49,362 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 232 243) the Hoare annotation is: true [2023-11-19 05:11:49,362 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 232 243) no Hoare annotation was computed. [2023-11-19 05:11:49,364 INFO L895 garLoopResultBuilder]: At program point L870(line 870) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0)))) (and (or (not (= |old(~pumpRunning~0)| 0)) (not (= |old(~waterLevel~0)| 1)) .cse0) (or .cse0 (not (= |old(~waterLevel~0)| 2))))) [2023-11-19 05:11:49,364 INFO L895 garLoopResultBuilder]: At program point L705(line 705) the Hoare annotation is: (let ((.cse2 (not (= |old(~waterLevel~0)| 2))) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= 1 ~systemActive~0))) (.cse3 (and (= ~pumpRunning~0 0) (= |timeShift___utac_acc__Specification5_spec__3_~tmp~4#1| 1) (= ~waterLevel~0 1)))) (and (or .cse0 .cse1 .cse2) (or .cse1 .cse2 .cse3) (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse1 .cse3))) [2023-11-19 05:11:49,365 INFO L899 garLoopResultBuilder]: For program point L705-1(line 705) no Hoare annotation was computed. [2023-11-19 05:11:49,365 INFO L895 garLoopResultBuilder]: At program point L875(line 875) the Hoare annotation is: (let ((.cse1 (not (= 1 ~systemActive~0))) (.cse2 (= ~pumpRunning~0 0)) (.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (not .cse0) (not (= |old(~waterLevel~0)| 1)) .cse1 (and .cse2 (= ~waterLevel~0 1))) (or .cse1 (not (= |old(~waterLevel~0)| 2)) (and .cse2 (= 2 ~waterLevel~0) .cse0)))) [2023-11-19 05:11:49,365 INFO L899 garLoopResultBuilder]: For program point L875-1(lines 856 880) no Hoare annotation was computed. [2023-11-19 05:11:49,365 INFO L899 garLoopResultBuilder]: For program point L809-1(lines 809 815) no Hoare annotation was computed. [2023-11-19 05:11:49,365 INFO L899 garLoopResultBuilder]: For program point L54(line 54) no Hoare annotation was computed. [2023-11-19 05:11:49,365 INFO L895 garLoopResultBuilder]: At program point L690(line 690) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0)))) (and (or (not (= |old(~pumpRunning~0)| 0)) (not (= |old(~waterLevel~0)| 1)) .cse0 (and (= ~pumpRunning~0 0) (= ~waterLevel~0 1))) (or .cse0 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= 2 ~waterLevel~0)) (not (= |old(~waterLevel~0)| 2))))) [2023-11-19 05:11:49,366 INFO L899 garLoopResultBuilder]: For program point L690-1(line 690) no Hoare annotation was computed. [2023-11-19 05:11:49,366 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 795 821) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0)))) (and (or (not (= |old(~pumpRunning~0)| 0)) (not (= |old(~waterLevel~0)| 1)) .cse0 (and (= ~pumpRunning~0 0) (= ~waterLevel~0 1))) (or .cse0 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= 2 ~waterLevel~0)) (not (= |old(~waterLevel~0)| 2))))) [2023-11-19 05:11:49,366 INFO L899 garLoopResultBuilder]: For program point L707(lines 707 717) no Hoare annotation was computed. [2023-11-19 05:11:49,366 INFO L899 garLoopResultBuilder]: For program point L802-2(lines 798 820) no Hoare annotation was computed. [2023-11-19 05:11:49,366 INFO L899 garLoopResultBuilder]: For program point L864(lines 864 872) no Hoare annotation was computed. [2023-11-19 05:11:49,367 INFO L899 garLoopResultBuilder]: For program point L703(lines 703 720) no Hoare annotation was computed. [2023-11-19 05:11:49,367 INFO L899 garLoopResultBuilder]: For program point L703-1(lines 695 723) no Hoare annotation was computed. [2023-11-19 05:11:49,367 INFO L899 garLoopResultBuilder]: For program point L860(lines 860 877) no Hoare annotation was computed. [2023-11-19 05:11:49,367 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 795 821) no Hoare annotation was computed. [2023-11-19 05:11:49,367 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 54) no Hoare annotation was computed. [2023-11-19 05:11:49,368 INFO L899 garLoopResultBuilder]: For program point L708(lines 708 714) no Hoare annotation was computed. [2023-11-19 05:11:49,368 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 99 128) no Hoare annotation was computed. [2023-11-19 05:11:49,368 INFO L899 garLoopResultBuilder]: For program point L124(lines 99 128) no Hoare annotation was computed. [2023-11-19 05:11:49,368 INFO L899 garLoopResultBuilder]: For program point L120(line 120) no Hoare annotation was computed. [2023-11-19 05:11:49,369 INFO L899 garLoopResultBuilder]: For program point L113(lines 113 117) no Hoare annotation was computed. [2023-11-19 05:11:49,369 INFO L902 garLoopResultBuilder]: At program point L113-1(lines 113 117) the Hoare annotation is: true [2023-11-19 05:11:49,369 INFO L902 garLoopResultBuilder]: At program point L109-2(lines 109 123) the Hoare annotation is: true [2023-11-19 05:11:49,369 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 99 128) the Hoare annotation is: true [2023-11-19 05:11:49,369 INFO L902 garLoopResultBuilder]: At program point L105(line 105) the Hoare annotation is: true [2023-11-19 05:11:49,369 INFO L899 garLoopResultBuilder]: For program point L105-1(line 105) no Hoare annotation was computed. [2023-11-19 05:11:49,370 INFO L895 garLoopResultBuilder]: At program point L771-2(lines 765 776) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= 2 ~waterLevel~0) .cse0 .cse1) (and (= ~pumpRunning~0 0) .cse0 .cse1 (= ~waterLevel~0 1)))) [2023-11-19 05:11:49,370 INFO L899 garLoopResultBuilder]: For program point L755(lines 755 761) no Hoare annotation was computed. [2023-11-19 05:11:49,370 INFO L899 garLoopResultBuilder]: For program point L755-1(lines 755 761) no Hoare annotation was computed. [2023-11-19 05:11:49,370 INFO L899 garLoopResultBuilder]: For program point L784(lines 725 788) no Hoare annotation was computed. [2023-11-19 05:11:49,370 INFO L895 garLoopResultBuilder]: At program point L747(line 747) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= 2 ~waterLevel~0) .cse0 .cse1) (and (= ~pumpRunning~0 0) .cse0 .cse1 (= ~waterLevel~0 1)))) [2023-11-19 05:11:49,370 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-19 05:11:49,371 INFO L899 garLoopResultBuilder]: For program point L186(lines 186 193) no Hoare annotation was computed. [2023-11-19 05:11:49,371 INFO L899 garLoopResultBuilder]: For program point L186-2(lines 186 193) no Hoare annotation was computed. [2023-11-19 05:11:49,371 INFO L895 garLoopResultBuilder]: At program point L781(lines 734 782) the Hoare annotation is: false [2023-11-19 05:11:49,371 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-19 05:11:49,371 INFO L899 garLoopResultBuilder]: For program point L736(lines 735 780) no Hoare annotation was computed. [2023-11-19 05:11:49,371 INFO L895 garLoopResultBuilder]: At program point L757(line 757) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= 2 ~waterLevel~0) .cse0 .cse1) (and (= ~pumpRunning~0 0) .cse0 .cse1 (= ~waterLevel~0 1)))) [2023-11-19 05:11:49,372 INFO L895 garLoopResultBuilder]: At program point L778(lines 735 780) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= 2 ~waterLevel~0) .cse0 .cse1) (and (= ~pumpRunning~0 0) .cse0 .cse1 (= ~waterLevel~0 1)))) [2023-11-19 05:11:49,372 INFO L899 garLoopResultBuilder]: For program point L745(lines 745 751) no Hoare annotation was computed. [2023-11-19 05:11:49,372 INFO L899 garLoopResultBuilder]: For program point L745-1(lines 745 751) no Hoare annotation was computed. [2023-11-19 05:11:49,372 INFO L895 garLoopResultBuilder]: At program point L849(line 849) 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 05:11:49,372 INFO L899 garLoopResultBuilder]: For program point L849-1(lines 830 854) no Hoare annotation was computed. [2023-11-19 05:11:49,373 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 830 854) 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 05:11:49,373 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 830 854) no Hoare annotation was computed. [2023-11-19 05:11:49,373 INFO L895 garLoopResultBuilder]: At program point L844(line 844) the Hoare annotation is: (let ((.cse1 (not (= |old(~pumpRunning~0)| 0))) (.cse0 (= ~pumpRunning~0 0)) (.cse2 (not (= 1 ~systemActive~0)))) (and (or (and .cse0 (= |processEnvironment__wrappee__highWaterSensor_~tmp~6#1| 0)) (not (= ~waterLevel~0 1)) .cse1 .cse2) (or .cse1 .cse0 .cse2 (not (= 2 ~waterLevel~0))))) [2023-11-19 05:11:49,373 INFO L899 garLoopResultBuilder]: For program point L838(lines 838 846) no Hoare annotation was computed. [2023-11-19 05:11:49,373 INFO L899 garLoopResultBuilder]: For program point L834(lines 834 851) no Hoare annotation was computed. [2023-11-19 05:11:49,373 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 220 231) no Hoare annotation was computed. [2023-11-19 05:11:49,374 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 220 231) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0)))) (and (or (= 2 ~waterLevel~0) .cse0 (not (= |old(~waterLevel~0)| 2))) (or (not (= ~pumpRunning~0 0)) (not (= |old(~waterLevel~0)| 1)) .cse0 (= ~waterLevel~0 1)))) [2023-11-19 05:11:49,374 INFO L899 garLoopResultBuilder]: For program point isPumpRunningEXIT(lines 926 934) no Hoare annotation was computed. [2023-11-19 05:11:49,374 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 926 934) the Hoare annotation is: true [2023-11-19 05:11:49,377 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:11:49,379 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:11:49,391 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:11:49 BoogieIcfgContainer [2023-11-19 05:11:49,391 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:11:49,392 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:11:49,392 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:11:49,392 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:11:49,393 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:11:12" (3/4) ... [2023-11-19 05:11:49,394 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 05:11:49,397 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2023-11-19 05:11:49,397 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2023-11-19 05:11:49,397 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2023-11-19 05:11:49,397 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2023-11-19 05:11:49,398 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2023-11-19 05:11:49,398 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2023-11-19 05:11:49,398 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isPumpRunning [2023-11-19 05:11:49,406 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 49 nodes and edges [2023-11-19 05:11:49,407 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-11-19 05:11:49,408 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-19 05:11:49,409 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 05:11:49,410 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 05:11:49,524 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8558ce-eb9d-4713-bc40-2ffe8d767c57/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 05:11:49,525 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8558ce-eb9d-4713-bc40-2ffe8d767c57/bin/utaipan-verify-t7M7D8N6sZ/witness.yml [2023-11-19 05:11:49,525 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:11:49,526 INFO L158 Benchmark]: Toolchain (without parser) took 38693.91ms. Allocated memory was 161.5MB in the beginning and 903.9MB in the end (delta: 742.4MB). Free memory was 116.3MB in the beginning and 799.6MB in the end (delta: -683.3MB). Peak memory consumption was 59.9MB. Max. memory is 16.1GB. [2023-11-19 05:11:49,526 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 109.1MB. Free memory was 77.3MB in the beginning and 77.3MB in the end (delta: 26.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:11:49,527 INFO L158 Benchmark]: CACSL2BoogieTranslator took 818.63ms. Allocated memory is still 161.5MB. Free memory was 116.3MB in the beginning and 96.5MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 05:11:49,527 INFO L158 Benchmark]: Boogie Procedure Inliner took 94.33ms. Allocated memory is still 161.5MB. Free memory was 96.5MB in the beginning and 94.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:11:49,528 INFO L158 Benchmark]: Boogie Preprocessor took 70.08ms. Allocated memory is still 161.5MB. Free memory was 94.1MB in the beginning and 92.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:11:49,528 INFO L158 Benchmark]: RCFGBuilder took 825.93ms. Allocated memory is still 161.5MB. Free memory was 92.3MB in the beginning and 105.5MB in the end (delta: -13.3MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. [2023-11-19 05:11:49,528 INFO L158 Benchmark]: TraceAbstraction took 36742.78ms. Allocated memory was 161.5MB in the beginning and 903.9MB in the end (delta: 742.4MB). Free memory was 104.7MB in the beginning and 806.9MB in the end (delta: -702.2MB). Peak memory consumption was 522.3MB. Max. memory is 16.1GB. [2023-11-19 05:11:49,529 INFO L158 Benchmark]: Witness Printer took 133.25ms. Allocated memory is still 903.9MB. Free memory was 806.9MB in the beginning and 799.6MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-19 05:11:49,531 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 109.1MB. Free memory was 77.3MB in the beginning and 77.3MB in the end (delta: 26.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 818.63ms. Allocated memory is still 161.5MB. Free memory was 116.3MB in the beginning and 96.5MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 94.33ms. Allocated memory is still 161.5MB. Free memory was 96.5MB in the beginning and 94.1MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.08ms. Allocated memory is still 161.5MB. Free memory was 94.1MB in the beginning and 92.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 825.93ms. Allocated memory is still 161.5MB. Free memory was 92.3MB in the beginning and 105.5MB in the end (delta: -13.3MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. * TraceAbstraction took 36742.78ms. Allocated memory was 161.5MB in the beginning and 903.9MB in the end (delta: 742.4MB). Free memory was 104.7MB in the beginning and 806.9MB in the end (delta: -702.2MB). Peak memory consumption was 522.3MB. Max. memory is 16.1GB. * Witness Printer took 133.25ms. Allocated memory is still 903.9MB. Free memory was 806.9MB in the beginning and 799.6MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 49]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [49] - GenericResultAtLocation [Line: 58]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [58] - GenericResultAtLocation [Line: 96]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [96] - GenericResultAtLocation [Line: 199]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [199] - GenericResultAtLocation [Line: 308]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [308] - GenericResultAtLocation [Line: 674]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification5_spec.i","") [674] - GenericResultAtLocation [Line: 724]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [724] - GenericResultAtLocation [Line: 789]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [789] * 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 8 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 36.7s, OverallIterations: 11, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 6.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1783 SdHoareTripleChecker+Valid, 3.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1756 mSDsluCounter, 2808 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2191 mSDsCounter, 911 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3911 IncrementalHoareTripleChecker+Invalid, 4822 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 911 mSolverCounterUnsat, 617 mSDtfsCounter, 3911 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 991 GetRequests, 697 SyntacticMatches, 15 SemanticMatches, 279 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6114 ImplicationChecksByTransitivity, 11.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=731occurred in iteration=9, InterpolantAutomatonStates: 157, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 11 MinimizatonAttempts, 573 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 21 LocationsWithAnnotation, 1078 PreInvPairs, 1115 NumberOfFragments, 423 HoareAnnotationTreeSize, 1078 FomulaSimplifications, 10271 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 21 FomulaSimplificationsInter, 4922 FormulaSimplificationTreeSizeReductionInter, 1.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.7s InterpolantComputationTime, 816 NumberOfCodeBlocks, 816 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 1031 ConstructedInterpolants, 0 QuantifiedInterpolants, 3695 SizeOfPredicates, 31 NumberOfNonLiveVariables, 1301 ConjunctsInSsa, 79 ConjunctsInUnsatCore, 18 InterpolantComputations, 8 PerfectInterpolantSequences, 472/620 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: 109]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 734]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 735]: Loop Invariant Derived loop invariant: ((((2 == waterLevel) && (1 == systemActive)) && (splverifierCounter == 0)) || ((((pumpRunning == 0) && (1 == systemActive)) && (splverifierCounter == 0)) && (waterLevel == 1))) RESULT: Ultimate proved your program to be correct! [2023-11-19 05:11:49,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e8558ce-eb9d-4713-bc40-2ffe8d767c57/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