./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product59.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_9debc465-cb5a-48eb-995b-7fc7d0735403/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9debc465-cb5a-48eb-995b-7fc7d0735403/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9debc465-cb5a-48eb-995b-7fc7d0735403/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9debc465-cb5a-48eb-995b-7fc7d0735403/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product59.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9debc465-cb5a-48eb-995b-7fc7d0735403/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9debc465-cb5a-48eb-995b-7fc7d0735403/bin/utaipan-verify-nQ1chXbOIh --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 5a0a9a5f1521df25ea0ff390c35c7186e45318cd30c225704d83030e156744fb --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:52:05,246 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:52:05,324 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9debc465-cb5a-48eb-995b-7fc7d0735403/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 17:52:05,328 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:52:05,329 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:52:05,356 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:52:05,357 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:52:05,358 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:52:05,359 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:52:05,359 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:52:05,360 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:52:05,361 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:52:05,361 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:52:05,362 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 17:52:05,362 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:52:05,363 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:52:05,363 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 17:52:05,364 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 17:52:05,365 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:52:05,365 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 17:52:05,366 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 17:52:05,367 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 17:52:05,368 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:52:05,368 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:52:05,369 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 17:52:05,369 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 17:52:05,378 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 17:52:05,379 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:52:05,379 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:52:05,380 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:52:05,380 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:52:05,381 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 17:52:05,381 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:52:05,382 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:52:05,382 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:52:05,383 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:52:05,383 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:52:05,384 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:52:05,385 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:52:05,385 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:52:05,386 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 17:52:05,386 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 17:52:05,386 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 17:52:05,387 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:52:05,387 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 17:52:05,387 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:52:05,387 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:52:05,388 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_9debc465-cb5a-48eb-995b-7fc7d0735403/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9debc465-cb5a-48eb-995b-7fc7d0735403/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a0a9a5f1521df25ea0ff390c35c7186e45318cd30c225704d83030e156744fb [2023-12-02 17:52:05,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:52:05,680 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:52:05,683 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:52:05,685 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:52:05,686 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:52:05,687 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9debc465-cb5a-48eb-995b-7fc7d0735403/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/product-lines/minepump_spec1_product59.cil.c [2023-12-02 17:52:08,466 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:52:08,683 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:52:08,684 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9debc465-cb5a-48eb-995b-7fc7d0735403/sv-benchmarks/c/product-lines/minepump_spec1_product59.cil.c [2023-12-02 17:52:08,699 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9debc465-cb5a-48eb-995b-7fc7d0735403/bin/utaipan-verify-nQ1chXbOIh/data/823a20cab/4b9df8fd46e148fb86fc86a2aeb2a24b/FLAG421591d35 [2023-12-02 17:52:08,714 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9debc465-cb5a-48eb-995b-7fc7d0735403/bin/utaipan-verify-nQ1chXbOIh/data/823a20cab/4b9df8fd46e148fb86fc86a2aeb2a24b [2023-12-02 17:52:08,717 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:52:08,718 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:52:08,719 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:52:08,719 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:52:08,724 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:52:08,725 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:52:08" (1/1) ... [2023-12-02 17:52:08,726 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c3bec0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:52:08, skipping insertion in model container [2023-12-02 17:52:08,727 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:52:08" (1/1) ... [2023-12-02 17:52:08,772 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:52:08,930 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_9debc465-cb5a-48eb-995b-7fc7d0735403/sv-benchmarks/c/product-lines/minepump_spec1_product59.cil.c[3645,3658] [2023-12-02 17:52:09,016 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:52:09,027 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:52:09,034 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [49] [2023-12-02 17:52:09,036 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [160] [2023-12-02 17:52:09,036 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [188] [2023-12-02 17:52:09,036 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [197] [2023-12-02 17:52:09,036 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [267] [2023-12-02 17:52:09,037 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [500] [2023-12-02 17:52:09,037 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [866] [2023-12-02 17:52:09,037 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [904] [2023-12-02 17:52:09,047 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_9debc465-cb5a-48eb-995b-7fc7d0735403/sv-benchmarks/c/product-lines/minepump_spec1_product59.cil.c[3645,3658] [2023-12-02 17:52:09,098 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:52:09,116 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:52:09,116 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:52:09 WrapperNode [2023-12-02 17:52:09,117 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:52:09,118 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:52:09,118 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:52:09,118 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:52:09,124 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:52:09" (1/1) ... [2023-12-02 17:52:09,149 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:52:09" (1/1) ... [2023-12-02 17:52:09,177 INFO L138 Inliner]: procedures = 57, calls = 102, calls flagged for inlining = 24, calls inlined = 21, statements flattened = 218 [2023-12-02 17:52:09,178 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:52:09,179 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:52:09,179 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:52:09,179 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:52:09,188 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:52:09" (1/1) ... [2023-12-02 17:52:09,188 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:52:09" (1/1) ... [2023-12-02 17:52:09,190 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:52:09" (1/1) ... [2023-12-02 17:52:09,191 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:52:09" (1/1) ... [2023-12-02 17:52:09,195 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:52:09" (1/1) ... [2023-12-02 17:52:09,199 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:52:09" (1/1) ... [2023-12-02 17:52:09,200 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:52:09" (1/1) ... [2023-12-02 17:52:09,202 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:52:09" (1/1) ... [2023-12-02 17:52:09,204 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:52:09,205 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:52:09,205 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:52:09,205 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:52:09,206 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:52:09" (1/1) ... [2023-12-02 17:52:09,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:52:09,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9debc465-cb5a-48eb-995b-7fc7d0735403/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:52:09,235 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9debc465-cb5a-48eb-995b-7fc7d0735403/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:52:09,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9debc465-cb5a-48eb-995b-7fc7d0735403/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:52:09,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 17:52:09,275 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-12-02 17:52:09,275 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-12-02 17:52:09,275 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-12-02 17:52:09,276 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-12-02 17:52:09,276 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-12-02 17:52:09,276 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-12-02 17:52:09,276 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-12-02 17:52:09,276 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-12-02 17:52:09,276 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-12-02 17:52:09,277 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-12-02 17:52:09,277 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-12-02 17:52:09,277 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-12-02 17:52:09,277 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-12-02 17:52:09,277 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-12-02 17:52:09,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 17:52:09,278 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-12-02 17:52:09,278 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-12-02 17:52:09,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:52:09,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:52:09,364 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:52:09,367 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:52:09,640 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:52:09,763 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:52:09,764 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 17:52:09,766 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:52:09 BoogieIcfgContainer [2023-12-02 17:52:09,766 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:52:09,769 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:52:09,769 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:52:09,772 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:52:09,773 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:52:08" (1/3) ... [2023-12-02 17:52:09,774 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e253e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:52:09, skipping insertion in model container [2023-12-02 17:52:09,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:52:09" (2/3) ... [2023-12-02 17:52:09,774 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38e253e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:52:09, skipping insertion in model container [2023-12-02 17:52:09,775 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:52:09" (3/3) ... [2023-12-02 17:52:09,776 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product59.cil.c [2023-12-02 17:52:09,796 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:52:09,797 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 17:52:09,850 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:52:09,856 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;@6151ea6a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:52:09,871 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 17:52:09,878 INFO L276 IsEmpty]: Start isEmpty. Operand has 65 states, 41 states have (on average 1.4390243902439024) internal successors, (59), 50 states have internal predecessors, (59), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 17:52:09,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 17:52:09,887 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:52:09,887 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:52:09,888 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:52:09,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:52:09,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1639409761, now seen corresponding path program 1 times [2023-12-02 17:52:09,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:52:09,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364258251] [2023-12-02 17:52:09,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:52:09,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:52:10,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:52:10,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:52:10,064 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:52:10,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364258251] [2023-12-02 17:52:10,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364258251] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:52:10,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:52:10,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:52:10,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019545424] [2023-12-02 17:52:10,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:52:10,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 17:52:10,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:52:10,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 17:52:10,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 17:52:10,101 INFO L87 Difference]: Start difference. First operand has 65 states, 41 states have (on average 1.4390243902439024) internal successors, (59), 50 states have internal predecessors, (59), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:52:10,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:52:10,162 INFO L93 Difference]: Finished difference Result 128 states and 175 transitions. [2023-12-02 17:52:10,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 17:52:10,165 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-12-02 17:52:10,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:52:10,172 INFO L225 Difference]: With dead ends: 128 [2023-12-02 17:52:10,172 INFO L226 Difference]: Without dead ends: 60 [2023-12-02 17:52:10,176 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 [2023-12-02 17:52:10,180 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:52:10,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:52:10,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-12-02 17:52:10,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-12-02 17:52:10,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 38 states have (on average 1.3421052631578947) internal successors, (51), 46 states have internal predecessors, (51), 14 states have call successors, (14), 8 states have call predecessors, (14), 7 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 17:52:10,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 78 transitions. [2023-12-02 17:52:10,219 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 78 transitions. Word has length 16 [2023-12-02 17:52:10,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:52:10,219 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 78 transitions. [2023-12-02 17:52:10,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:52:10,220 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 78 transitions. [2023-12-02 17:52:10,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 17:52:10,223 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:52:10,223 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:52:10,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 17:52:10,223 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:52:10,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:52:10,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1747312023, now seen corresponding path program 1 times [2023-12-02 17:52:10,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:52:10,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572185869] [2023-12-02 17:52:10,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:52:10,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:52:10,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:52:10,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:52:10,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:52:10,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572185869] [2023-12-02 17:52:10,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572185869] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:52:10,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:52:10,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:52:10,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945482421] [2023-12-02 17:52:10,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:52:10,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:52:10,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:52:10,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:52:10,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:52:10,330 INFO L87 Difference]: Start difference. First operand 60 states and 78 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:52:10,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:52:10,381 INFO L93 Difference]: Finished difference Result 92 states and 118 transitions. [2023-12-02 17:52:10,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:52:10,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-12-02 17:52:10,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:52:10,384 INFO L225 Difference]: With dead ends: 92 [2023-12-02 17:52:10,384 INFO L226 Difference]: Without dead ends: 52 [2023-12-02 17:52:10,385 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 [2023-12-02 17:52:10,387 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 14 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 89 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 [2023-12-02 17:52:10,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 89 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:52:10,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-12-02 17:52:10,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2023-12-02 17:52:10,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 41 states have internal predecessors, (45), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 8 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 17:52:10,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 67 transitions. [2023-12-02 17:52:10,400 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 67 transitions. Word has length 17 [2023-12-02 17:52:10,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:52:10,401 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 67 transitions. [2023-12-02 17:52:10,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:52:10,402 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 67 transitions. [2023-12-02 17:52:10,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 17:52:10,403 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:52:10,404 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:52:10,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 17:52:10,404 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:52:10,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:52:10,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1956385546, now seen corresponding path program 1 times [2023-12-02 17:52:10,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:52:10,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439599268] [2023-12-02 17:52:10,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:52:10,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:52:10,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:52:10,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:52:10,508 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:52:10,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439599268] [2023-12-02 17:52:10,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439599268] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:52:10,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:52:10,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:52:10,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132192084] [2023-12-02 17:52:10,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:52:10,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:52:10,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:52:10,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:52:10,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:52:10,512 INFO L87 Difference]: Start difference. First operand 52 states and 67 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:52:10,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:52:10,594 INFO L93 Difference]: Finished difference Result 152 states and 198 transitions. [2023-12-02 17:52:10,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:52:10,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2023-12-02 17:52:10,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:52:10,597 INFO L225 Difference]: With dead ends: 152 [2023-12-02 17:52:10,598 INFO L226 Difference]: Without dead ends: 102 [2023-12-02 17:52:10,599 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 [2023-12-02 17:52:10,601 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 54 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:52:10,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 114 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:52:10,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-12-02 17:52:10,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 99. [2023-12-02 17:52:10,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 62 states have (on average 1.3709677419354838) internal successors, (85), 77 states have internal predecessors, (85), 22 states have call successors, (22), 14 states have call predecessors, (22), 14 states have return successors, (22), 15 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-02 17:52:10,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 129 transitions. [2023-12-02 17:52:10,625 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 129 transitions. Word has length 20 [2023-12-02 17:52:10,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:52:10,625 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 129 transitions. [2023-12-02 17:52:10,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:52:10,626 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 129 transitions. [2023-12-02 17:52:10,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-02 17:52:10,628 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:52:10,628 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:52:10,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 17:52:10,628 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:52:10,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:52:10,629 INFO L85 PathProgramCache]: Analyzing trace with hash 645042536, now seen corresponding path program 1 times [2023-12-02 17:52:10,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:52:10,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236435494] [2023-12-02 17:52:10,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:52:10,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:52:10,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:52:10,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:52:10,741 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:52:10,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236435494] [2023-12-02 17:52:10,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236435494] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:52:10,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:52:10,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:52:10,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900501130] [2023-12-02 17:52:10,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:52:10,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:52:10,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:52:10,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:52:10,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:52:10,744 INFO L87 Difference]: Start difference. First operand 99 states and 129 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:52:10,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:52:10,844 INFO L93 Difference]: Finished difference Result 270 states and 359 transitions. [2023-12-02 17:52:10,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:52:10,845 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2023-12-02 17:52:10,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:52:10,848 INFO L225 Difference]: With dead ends: 270 [2023-12-02 17:52:10,848 INFO L226 Difference]: Without dead ends: 173 [2023-12-02 17:52:10,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:52:10,851 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 37 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:52:10,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 140 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:52:10,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-12-02 17:52:10,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 168. [2023-12-02 17:52:10,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 111 states have (on average 1.3063063063063063) internal successors, (145), 126 states have internal predecessors, (145), 30 states have call successors, (30), 26 states have call predecessors, (30), 26 states have return successors, (38), 27 states have call predecessors, (38), 30 states have call successors, (38) [2023-12-02 17:52:10,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 213 transitions. [2023-12-02 17:52:10,878 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 213 transitions. Word has length 23 [2023-12-02 17:52:10,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:52:10,879 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 213 transitions. [2023-12-02 17:52:10,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:52:10,879 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 213 transitions. [2023-12-02 17:52:10,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-02 17:52:10,881 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:52:10,881 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] [2023-12-02 17:52:10,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 17:52:10,882 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:52:10,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:52:10,882 INFO L85 PathProgramCache]: Analyzing trace with hash -196824643, now seen corresponding path program 1 times [2023-12-02 17:52:10,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:52:10,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662665266] [2023-12-02 17:52:10,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:52:10,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:52:10,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:52:11,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 17:52:11,202 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:52:11,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662665266] [2023-12-02 17:52:11,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662665266] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:52:11,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:52:11,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 17:52:11,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250897795] [2023-12-02 17:52:11,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:52:11,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 17:52:11,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:52:11,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 17:52:11,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 17:52:11,205 INFO L87 Difference]: Start difference. First operand 168 states and 213 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 17:52:11,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:52:11,517 INFO L93 Difference]: Finished difference Result 483 states and 611 transitions. [2023-12-02 17:52:11,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 17:52:11,518 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2023-12-02 17:52:11,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:52:11,523 INFO L225 Difference]: With dead ends: 483 [2023-12-02 17:52:11,523 INFO L226 Difference]: Without dead ends: 317 [2023-12-02 17:52:11,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-12-02 17:52:11,526 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 163 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:52:11,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 258 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 17:52:11,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2023-12-02 17:52:11,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 298. [2023-12-02 17:52:11,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 201 states have (on average 1.2885572139303483) internal successors, (259), 221 states have internal predecessors, (259), 47 states have call successors, (47), 45 states have call predecessors, (47), 49 states have return successors, (59), 47 states have call predecessors, (59), 47 states have call successors, (59) [2023-12-02 17:52:11,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 365 transitions. [2023-12-02 17:52:11,574 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 365 transitions. Word has length 32 [2023-12-02 17:52:11,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:52:11,575 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 365 transitions. [2023-12-02 17:52:11,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 17:52:11,575 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 365 transitions. [2023-12-02 17:52:11,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-02 17:52:11,578 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:52:11,578 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] [2023-12-02 17:52:11,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 17:52:11,578 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:52:11,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:52:11,579 INFO L85 PathProgramCache]: Analyzing trace with hash 2005372804, now seen corresponding path program 1 times [2023-12-02 17:52:11,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:52:11,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115287077] [2023-12-02 17:52:11,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:52:11,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:52:11,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:52:11,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 17:52:11,698 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:52:11,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115287077] [2023-12-02 17:52:11,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115287077] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:52:11,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:52:11,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 17:52:11,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369562341] [2023-12-02 17:52:11,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:52:11,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:52:11,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:52:11,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:52:11,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 17:52:11,700 INFO L87 Difference]: Start difference. First operand 298 states and 365 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 17:52:11,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:52:11,883 INFO L93 Difference]: Finished difference Result 880 states and 1098 transitions. [2023-12-02 17:52:11,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 17:52:11,885 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2023-12-02 17:52:11,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:52:11,890 INFO L225 Difference]: With dead ends: 880 [2023-12-02 17:52:11,891 INFO L226 Difference]: Without dead ends: 584 [2023-12-02 17:52:11,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-12-02 17:52:11,893 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 43 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:52:11,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 231 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:52:11,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2023-12-02 17:52:11,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 560. [2023-12-02 17:52:11,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 383 states have (on average 1.2715404699738904) internal successors, (487), 414 states have internal predecessors, (487), 86 states have call successors, (86), 82 states have call predecessors, (86), 90 states have return successors, (110), 86 states have call predecessors, (110), 86 states have call successors, (110) [2023-12-02 17:52:11,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 683 transitions. [2023-12-02 17:52:11,954 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 683 transitions. Word has length 35 [2023-12-02 17:52:11,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:52:11,955 INFO L495 AbstractCegarLoop]: Abstraction has 560 states and 683 transitions. [2023-12-02 17:52:11,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 17:52:11,955 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 683 transitions. [2023-12-02 17:52:11,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-02 17:52:11,958 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:52:11,958 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:52:11,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 17:52:11,959 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:52:11,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:52:11,959 INFO L85 PathProgramCache]: Analyzing trace with hash 897703719, now seen corresponding path program 1 times [2023-12-02 17:52:11,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:52:11,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023774863] [2023-12-02 17:52:11,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:52:11,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:52:11,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:52:12,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 17:52:12,209 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:52:12,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023774863] [2023-12-02 17:52:12,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023774863] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:52:12,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:52:12,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-02 17:52:12,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606785462] [2023-12-02 17:52:12,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:52:12,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 17:52:12,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:52:12,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 17:52:12,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-02 17:52:12,211 INFO L87 Difference]: Start difference. First operand 560 states and 683 transitions. Second operand has 11 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-02 17:52:12,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:52:12,856 INFO L93 Difference]: Finished difference Result 1080 states and 1402 transitions. [2023-12-02 17:52:12,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-02 17:52:12,858 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 38 [2023-12-02 17:52:12,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:52:12,864 INFO L225 Difference]: With dead ends: 1080 [2023-12-02 17:52:12,864 INFO L226 Difference]: Without dead ends: 854 [2023-12-02 17:52:12,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=195, Invalid=561, Unknown=0, NotChecked=0, Total=756 [2023-12-02 17:52:12,867 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 243 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:52:12,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 244 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 17:52:12,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2023-12-02 17:52:12,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 715. [2023-12-02 17:52:12,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 491 states have (on average 1.274949083503055) internal successors, (626), 529 states have internal predecessors, (626), 110 states have call successors, (110), 98 states have call predecessors, (110), 113 states have return successors, (155), 112 states have call predecessors, (155), 110 states have call successors, (155) [2023-12-02 17:52:12,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 891 transitions. [2023-12-02 17:52:12,934 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 891 transitions. Word has length 38 [2023-12-02 17:52:12,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:52:12,934 INFO L495 AbstractCegarLoop]: Abstraction has 715 states and 891 transitions. [2023-12-02 17:52:12,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 9 states have internal predecessors, (26), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-02 17:52:12,934 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 891 transitions. [2023-12-02 17:52:12,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-02 17:52:12,938 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:52:12,938 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:52:12,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 17:52:12,939 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:52:12,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:52:12,939 INFO L85 PathProgramCache]: Analyzing trace with hash -361986371, now seen corresponding path program 1 times [2023-12-02 17:52:12,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:52:12,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081491879] [2023-12-02 17:52:12,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:52:12,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:52:12,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:52:12,981 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 17:52:12,981 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:52:12,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081491879] [2023-12-02 17:52:12,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081491879] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:52:12,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:52:12,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:52:12,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739587999] [2023-12-02 17:52:12,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:52:12,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:52:12,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:52:12,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:52:12,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:52:12,983 INFO L87 Difference]: Start difference. First operand 715 states and 891 transitions. Second operand has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-02 17:52:13,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:52:13,113 INFO L93 Difference]: Finished difference Result 831 states and 1037 transitions. [2023-12-02 17:52:13,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:52:13,115 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 59 [2023-12-02 17:52:13,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:52:13,117 INFO L225 Difference]: With dead ends: 831 [2023-12-02 17:52:13,118 INFO L226 Difference]: Without dead ends: 331 [2023-12-02 17:52:13,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:52:13,120 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 87 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:52:13,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 120 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:52:13,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-12-02 17:52:13,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 303. [2023-12-02 17:52:13,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 206 states have (on average 1.1941747572815533) internal successors, (246), 220 states have internal predecessors, (246), 46 states have call successors, (46), 43 states have call predecessors, (46), 50 states have return successors, (65), 48 states have call predecessors, (65), 46 states have call successors, (65) [2023-12-02 17:52:13,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 357 transitions. [2023-12-02 17:52:13,163 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 357 transitions. Word has length 59 [2023-12-02 17:52:13,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:52:13,163 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 357 transitions. [2023-12-02 17:52:13,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-02 17:52:13,163 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 357 transitions. [2023-12-02 17:52:13,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-02 17:52:13,165 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:52:13,166 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, 1, 1, 1, 1] [2023-12-02 17:52:13,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 17:52:13,166 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:52:13,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:52:13,167 INFO L85 PathProgramCache]: Analyzing trace with hash 314597886, now seen corresponding path program 1 times [2023-12-02 17:52:13,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:52:13,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943924041] [2023-12-02 17:52:13,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:52:13,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:52:13,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:52:13,601 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 17:52:13,601 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:52:13,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943924041] [2023-12-02 17:52:13,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943924041] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:52:13,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607591170] [2023-12-02 17:52:13,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:52:13,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:52:13,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9debc465-cb5a-48eb-995b-7fc7d0735403/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:52:13,606 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9debc465-cb5a-48eb-995b-7fc7d0735403/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:52:13,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9debc465-cb5a-48eb-995b-7fc7d0735403/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 17:52:13,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:52:13,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-02 17:52:13,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:52:14,214 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 17:52:14,215 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:52:14,797 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 17:52:14,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607591170] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:52:14,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1319722648] [2023-12-02 17:52:14,826 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2023-12-02 17:52:14,826 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:52:14,830 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:52:14,836 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:52:14,837 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:52:20,220 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 7 for LOIs [2023-12-02 17:52:20,222 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 10 for LOIs [2023-12-02 17:52:20,302 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 22 for LOIs [2023-12-02 17:52:20,391 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 3 for LOIs [2023-12-02 17:52:20,392 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 6 for LOIs [2023-12-02 17:52:20,394 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 13 for LOIs [2023-12-02 17:52:20,395 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:52:23,563 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8823#(and (= |timeShift___utac_acc__Specification1_spec__1_~tmp~0#1| ~methaneLevelCritical~0) (<= ~methaneLevelCritical~0 1) (<= |timeShift_isPumpRunning_#res#1| 2147483647) (= |timeShift_isPumpRunning_#res#1| ~pumpRunning~0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification1_spec__1_~tmp___0~0#1|) (not (= |timeShift___utac_acc__Specification1_spec__1_~tmp~0#1| 0)) (not (= |timeShift___utac_acc__Specification1_spec__1_~tmp___0~0#1| 0)) (<= 0 (+ |timeShift_isPumpRunning_#res#1| 2147483648)) (<= 0 (+ ~methaneLevelCritical~0 2147483648)))' at error location [2023-12-02 17:52:23,563 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:52:23,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 17:52:23,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 14] total 31 [2023-12-02 17:52:23,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062144324] [2023-12-02 17:52:23,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 17:52:23,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-02 17:52:23,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:52:23,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-02 17:52:23,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=3754, Unknown=0, NotChecked=0, Total=4160 [2023-12-02 17:52:23,568 INFO L87 Difference]: Start difference. First operand 303 states and 357 transitions. Second operand has 31 states, 28 states have (on average 3.5714285714285716) internal successors, (100), 25 states have internal predecessors, (100), 13 states have call successors, (24), 11 states have call predecessors, (24), 10 states have return successors, (22), 10 states have call predecessors, (22), 13 states have call successors, (22) [2023-12-02 17:52:25,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:52:25,172 INFO L93 Difference]: Finished difference Result 1059 states and 1321 transitions. [2023-12-02 17:52:25,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-12-02 17:52:25,173 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 3.5714285714285716) internal successors, (100), 25 states have internal predecessors, (100), 13 states have call successors, (24), 11 states have call predecessors, (24), 10 states have return successors, (22), 10 states have call predecessors, (22), 13 states have call successors, (22) Word has length 67 [2023-12-02 17:52:25,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:52:25,178 INFO L225 Difference]: With dead ends: 1059 [2023-12-02 17:52:25,178 INFO L226 Difference]: Without dead ends: 822 [2023-12-02 17:52:25,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 149 SyntacticMatches, 9 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4247 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1260, Invalid=8640, Unknown=0, NotChecked=0, Total=9900 [2023-12-02 17:52:25,183 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 879 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 484 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 1211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 484 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 17:52:25,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 530 Invalid, 1211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [484 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 17:52:25,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2023-12-02 17:52:25,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 707. [2023-12-02 17:52:25,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 486 states have (on average 1.1872427983539096) internal successors, (577), 522 states have internal predecessors, (577), 107 states have call successors, (107), 89 states have call predecessors, (107), 113 states have return successors, (171), 116 states have call predecessors, (171), 107 states have call successors, (171) [2023-12-02 17:52:25,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 855 transitions. [2023-12-02 17:52:25,229 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 855 transitions. Word has length 67 [2023-12-02 17:52:25,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:52:25,230 INFO L495 AbstractCegarLoop]: Abstraction has 707 states and 855 transitions. [2023-12-02 17:52:25,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 3.5714285714285716) internal successors, (100), 25 states have internal predecessors, (100), 13 states have call successors, (24), 11 states have call predecessors, (24), 10 states have return successors, (22), 10 states have call predecessors, (22), 13 states have call successors, (22) [2023-12-02 17:52:25,230 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 855 transitions. [2023-12-02 17:52:25,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-12-02 17:52:25,233 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:52:25,233 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:52:25,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9debc465-cb5a-48eb-995b-7fc7d0735403/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 17:52:25,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9debc465-cb5a-48eb-995b-7fc7d0735403/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:52:25,434 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:52:25,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:52:25,434 INFO L85 PathProgramCache]: Analyzing trace with hash -2097245988, now seen corresponding path program 1 times [2023-12-02 17:52:25,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:52:25,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383550037] [2023-12-02 17:52:25,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:52:25,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:52:25,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:52:26,363 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 55 proven. 55 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-12-02 17:52:26,364 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:52:26,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383550037] [2023-12-02 17:52:26,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383550037] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:52:26,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492512955] [2023-12-02 17:52:26,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:52:26,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:52:26,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9debc465-cb5a-48eb-995b-7fc7d0735403/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:52:26,365 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9debc465-cb5a-48eb-995b-7fc7d0735403/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:52:26,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9debc465-cb5a-48eb-995b-7fc7d0735403/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 17:52:26,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:52:26,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 33 conjunts are in the unsatisfiable core [2023-12-02 17:52:26,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:52:27,124 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 71 proven. 74 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 17:52:27,125 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:52:27,859 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 79 proven. 32 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-12-02 17:52:27,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492512955] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:52:27,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1943893136] [2023-12-02 17:52:27,862 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2023-12-02 17:52:27,862 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:52:27,863 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:52:27,863 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:52:27,863 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:52:31,285 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 29 for LOIs [2023-12-02 17:52:31,291 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 52 for LOIs [2023-12-02 17:52:31,536 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 60 for LOIs [2023-12-02 17:52:31,815 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 1 for LOIs [2023-12-02 17:52:31,816 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 18 for LOIs [2023-12-02 17:52:31,818 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 7 for LOIs [2023-12-02 17:52:31,818 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 25 for LOIs [2023-12-02 17:52:31,822 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:52:36,067 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12020#(and (= |timeShift___utac_acc__Specification1_spec__1_~tmp~0#1| ~methaneLevelCritical~0) (<= |timeShift_isPumpRunning_#res#1| 2147483647) (= |timeShift_isPumpRunning_#res#1| ~pumpRunning~0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification1_spec__1_~tmp___0~0#1|) (<= ~methaneLevelCritical~0 2147483647) (not (= |timeShift___utac_acc__Specification1_spec__1_~tmp~0#1| 0)) (not (= |timeShift___utac_acc__Specification1_spec__1_~tmp___0~0#1| 0)) (<= 0 (+ |timeShift_isPumpRunning_#res#1| 2147483648)) (<= 0 (+ ~methaneLevelCritical~0 2147483648)))' at error location [2023-12-02 17:52:36,068 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:52:36,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 17:52:36,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 17] total 45 [2023-12-02 17:52:36,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562960698] [2023-12-02 17:52:36,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 17:52:36,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2023-12-02 17:52:36,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:52:36,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2023-12-02 17:52:36,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=605, Invalid=5557, Unknown=0, NotChecked=0, Total=6162 [2023-12-02 17:52:36,074 INFO L87 Difference]: Start difference. First operand 707 states and 855 transitions. Second operand has 45 states, 42 states have (on average 4.4523809523809526) internal successors, (187), 42 states have internal predecessors, (187), 27 states have call successors, (42), 11 states have call predecessors, (42), 17 states have return successors, (42), 21 states have call predecessors, (42), 27 states have call successors, (42) [2023-12-02 17:52:36,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:52:36,875 INFO L93 Difference]: Finished difference Result 987 states and 1195 transitions. [2023-12-02 17:52:36,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-02 17:52:36,876 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 42 states have (on average 4.4523809523809526) internal successors, (187), 42 states have internal predecessors, (187), 27 states have call successors, (42), 11 states have call predecessors, (42), 17 states have return successors, (42), 21 states have call predecessors, (42), 27 states have call successors, (42) Word has length 121 [2023-12-02 17:52:36,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:52:36,876 INFO L225 Difference]: With dead ends: 987 [2023-12-02 17:52:36,876 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 17:52:36,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 301 SyntacticMatches, 8 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3766 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1081, Invalid=7661, Unknown=0, NotChecked=0, Total=8742 [2023-12-02 17:52:36,882 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 445 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:52:36,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 413 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 17:52:36,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 17:52:36,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 17:52:36,883 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) [2023-12-02 17:52:36,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 17:52:36,884 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 121 [2023-12-02 17:52:36,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:52:36,884 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 17:52:36,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 42 states have (on average 4.4523809523809526) internal successors, (187), 42 states have internal predecessors, (187), 27 states have call successors, (42), 11 states have call predecessors, (42), 17 states have return successors, (42), 21 states have call predecessors, (42), 27 states have call successors, (42) [2023-12-02 17:52:36,885 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 17:52:36,885 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 17:52:36,887 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 17:52:36,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9debc465-cb5a-48eb-995b-7fc7d0735403/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 17:52:37,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9debc465-cb5a-48eb-995b-7fc7d0735403/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:52:37,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-02 17:52:38,702 INFO L899 garLoopResultBuilder]: For program point deactivatePumpEXIT(lines 383 390) no Hoare annotation was computed. [2023-12-02 17:52:38,703 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 383 390) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 |old(~pumpRunning~0)|))) (and (or .cse0 (< ~waterLevel~0 2) (= 0 ~systemActive~0)) (or .cse0 (not (= 1 ~systemActive~0))))) [2023-12-02 17:52:38,703 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 298 304) no Hoare annotation was computed. [2023-12-02 17:52:38,703 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 298 304) the Hoare annotation is: true [2023-12-02 17:52:38,703 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 84 95) the Hoare annotation is: true [2023-12-02 17:52:38,703 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 84 95) no Hoare annotation was computed. [2023-12-02 17:52:38,703 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 906 935) no Hoare annotation was computed. [2023-12-02 17:52:38,703 INFO L899 garLoopResultBuilder]: For program point L927(line 927) no Hoare annotation was computed. [2023-12-02 17:52:38,703 INFO L899 garLoopResultBuilder]: For program point L920(lines 920 924) no Hoare annotation was computed. [2023-12-02 17:52:38,703 INFO L902 garLoopResultBuilder]: At program point L920-1(lines 920 924) the Hoare annotation is: true [2023-12-02 17:52:38,703 INFO L902 garLoopResultBuilder]: At program point L916-2(lines 916 930) the Hoare annotation is: true [2023-12-02 17:52:38,704 INFO L902 garLoopResultBuilder]: At program point L912(line 912) the Hoare annotation is: true [2023-12-02 17:52:38,704 INFO L899 garLoopResultBuilder]: For program point L912-1(line 912) no Hoare annotation was computed. [2023-12-02 17:52:38,704 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 906 935) the Hoare annotation is: true [2023-12-02 17:52:38,704 INFO L899 garLoopResultBuilder]: For program point L931(lines 906 935) no Hoare annotation was computed. [2023-12-02 17:52:38,704 INFO L899 garLoopResultBuilder]: For program point L193(line 193) no Hoare annotation was computed. [2023-12-02 17:52:38,704 INFO L895 garLoopResultBuilder]: At program point L346(line 346) the Hoare annotation is: (let ((.cse1 (not (= 1 ~systemActive~0))) (.cse0 (not (= |old(~pumpRunning~0)| 0)))) (and (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse1) (or .cse1 (not (= |old(~waterLevel~0)| 2))) (or .cse0 (not (= 0 ~systemActive~0))))) [2023-12-02 17:52:38,704 INFO L895 garLoopResultBuilder]: At program point L342(line 342) the Hoare annotation is: (let ((.cse1 (not (= |old(~waterLevel~0)| 2))) (.cse0 (not (= 1 ~systemActive~0))) (.cse2 (not (= |old(~pumpRunning~0)| 0)))) (and (or .cse0 .cse1 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (= |timeShift_processEnvironment_~tmp~3#1| 1))) (or .cse2 .cse0 .cse1) (or .cse2 (not (= |old(~waterLevel~0)| 1)) .cse0) (or .cse2 (not (= 0 ~systemActive~0))))) [2023-12-02 17:52:38,704 INFO L895 garLoopResultBuilder]: At program point L169(line 169) the Hoare annotation is: (let ((.cse1 (= ~pumpRunning~0 0)) (.cse6 (= 1 ~systemActive~0))) (let ((.cse3 (not .cse6)) (.cse4 (not (= |old(~waterLevel~0)| 2))) (.cse5 (let ((.cse7 (= ~methaneLevelCritical~0 0))) (and (= 2 ~waterLevel~0) .cse6 (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse7) (or .cse1 .cse7)))) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse2 (not (= 0 ~systemActive~0)))) (and (or .cse0 .cse1 .cse2) (or .cse3 .cse4 (and .cse1 (= |old(~waterLevel~0)| (+ ~waterLevel~0 1))) .cse5) (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse3 (and .cse1 (= ~waterLevel~0 1))) (or .cse0 .cse3 .cse4 .cse5) (or (< 1 |old(~waterLevel~0)|) .cse0 (<= ~waterLevel~0 1) .cse2)))) [2023-12-02 17:52:38,704 INFO L899 garLoopResultBuilder]: For program point L169-1(line 169) no Hoare annotation was computed. [2023-12-02 17:52:38,705 INFO L895 garLoopResultBuilder]: At program point L351(line 351) the Hoare annotation is: (let ((.cse3 (= |old(~pumpRunning~0)| 0))) (let ((.cse1 (not (= 1 ~systemActive~0))) (.cse2 (= ~pumpRunning~0 0)) (.cse0 (not .cse3))) (and (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse1 (and .cse2 (= ~waterLevel~0 1))) (or .cse1 (not (= |old(~waterLevel~0)| 2)) (and .cse2 (= 2 ~waterLevel~0) .cse3)) (or .cse0 (not (= 0 ~systemActive~0)))))) [2023-12-02 17:52:38,705 INFO L899 garLoopResultBuilder]: For program point L351-1(lines 332 356) no Hoare annotation was computed. [2023-12-02 17:52:38,705 INFO L899 garLoopResultBuilder]: For program point L285-1(lines 285 291) no Hoare annotation was computed. [2023-12-02 17:52:38,705 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 274 297) the Hoare annotation is: (let ((.cse1 (= ~pumpRunning~0 0)) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse2 (not (= 0 ~systemActive~0))) (.cse3 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 .cse2) (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse3 (and .cse1 (= ~waterLevel~0 1))) (or (< 1 |old(~waterLevel~0)|) .cse0 (<= ~waterLevel~0 1) .cse2) (or .cse3 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= 2 ~waterLevel~0)) (not (= |old(~waterLevel~0)| 2))))) [2023-12-02 17:52:38,705 INFO L899 garLoopResultBuilder]: For program point L278-1(lines 277 296) no Hoare annotation was computed. [2023-12-02 17:52:38,705 INFO L899 garLoopResultBuilder]: For program point L340(lines 340 348) no Hoare annotation was computed. [2023-12-02 17:52:38,705 INFO L899 garLoopResultBuilder]: For program point L336(lines 336 353) no Hoare annotation was computed. [2023-12-02 17:52:38,705 INFO L899 garLoopResultBuilder]: For program point L175(lines 175 181) no Hoare annotation was computed. [2023-12-02 17:52:38,705 INFO L899 garLoopResultBuilder]: For program point L171(lines 171 184) no Hoare annotation was computed. [2023-12-02 17:52:38,706 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 274 297) no Hoare annotation was computed. [2023-12-02 17:52:38,706 INFO L899 garLoopResultBuilder]: For program point L171-1(lines 163 187) no Hoare annotation was computed. [2023-12-02 17:52:38,706 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 193) no Hoare annotation was computed. [2023-12-02 17:52:38,706 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 96 104) the Hoare annotation is: true [2023-12-02 17:52:38,706 INFO L899 garLoopResultBuilder]: For program point isMethaneLevelCriticalEXIT(lines 96 104) no Hoare annotation was computed. [2023-12-02 17:52:38,706 INFO L899 garLoopResultBuilder]: For program point L221(lines 221 227) no Hoare annotation was computed. [2023-12-02 17:52:38,706 INFO L899 garLoopResultBuilder]: For program point L221-1(lines 221 227) no Hoare annotation was computed. [2023-12-02 17:52:38,706 INFO L895 garLoopResultBuilder]: At program point L259(lines 210 260) the Hoare annotation is: false [2023-12-02 17:52:38,706 INFO L899 garLoopResultBuilder]: For program point L247(lines 247 253) no Hoare annotation was computed. [2023-12-02 17:52:38,706 INFO L895 garLoopResultBuilder]: At program point L247-2(lines 241 254) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse2 (= ~pumpRunning~0 0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= 2 ~waterLevel~0) .cse0 .cse1) (and .cse2 .cse0 .cse1 (= ~waterLevel~0 1)) (and .cse2 .cse1 (= 0 ~systemActive~0)))) [2023-12-02 17:52:38,707 INFO L895 garLoopResultBuilder]: At program point L491(line 491) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= 1 ~systemActive~0) .cse0) (and (<= 2 ~waterLevel~0) .cse0 (not (= 0 ~systemActive~0))))) [2023-12-02 17:52:38,707 INFO L899 garLoopResultBuilder]: For program point L231(lines 231 237) no Hoare annotation was computed. [2023-12-02 17:52:38,707 INFO L899 garLoopResultBuilder]: For program point L231-1(lines 231 237) no Hoare annotation was computed. [2023-12-02 17:52:38,707 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-02 17:52:38,707 INFO L895 garLoopResultBuilder]: At program point L256(lines 211 258) the Hoare annotation is: (let ((.cse0 (= 2 ~waterLevel~0)) (.cse1 (= 1 ~systemActive~0)) (.cse3 (= ~pumpRunning~0 0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 (= ~methaneLevelCritical~0 0) .cse1 .cse2) (and .cse3 .cse1 .cse2 (= ~waterLevel~0 1)) (and .cse3 .cse0 .cse1 .cse2) (and .cse3 .cse2 (= 0 ~systemActive~0)))) [2023-12-02 17:52:38,707 INFO L895 garLoopResultBuilder]: At program point L223(line 223) the Hoare annotation is: (let ((.cse0 (= 2 ~waterLevel~0)) (.cse1 (= 1 ~systemActive~0)) (.cse3 (= ~pumpRunning~0 0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 (= ~methaneLevelCritical~0 0) .cse1 .cse2) (and .cse3 .cse1 .cse2 (= ~waterLevel~0 1)) (and .cse3 .cse0 .cse1 .cse2) (and .cse3 .cse2 (= 0 ~systemActive~0)))) [2023-12-02 17:52:38,707 INFO L899 garLoopResultBuilder]: For program point L987(lines 987 994) no Hoare annotation was computed. [2023-12-02 17:52:38,707 INFO L899 garLoopResultBuilder]: For program point L987-2(lines 987 994) no Hoare annotation was computed. [2023-12-02 17:52:38,707 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-02 17:52:38,707 INFO L899 garLoopResultBuilder]: For program point L212(lines 211 258) no Hoare annotation was computed. [2023-12-02 17:52:38,708 INFO L899 garLoopResultBuilder]: For program point L241(lines 241 254) no Hoare annotation was computed. [2023-12-02 17:52:38,708 INFO L895 garLoopResultBuilder]: At program point L233(line 233) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse2 (= ~pumpRunning~0 0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= 2 ~waterLevel~0) .cse0 .cse1) (and .cse2 .cse0 .cse1 (= ~waterLevel~0 1)) (and .cse2 .cse1 (= 0 ~systemActive~0)))) [2023-12-02 17:52:38,708 INFO L899 garLoopResultBuilder]: For program point L489(lines 489 495) no Hoare annotation was computed. [2023-12-02 17:52:38,708 INFO L899 garLoopResultBuilder]: For program point L489-1(lines 489 495) no Hoare annotation was computed. [2023-12-02 17:52:38,708 INFO L899 garLoopResultBuilder]: For program point L262(lines 201 266) no Hoare annotation was computed. [2023-12-02 17:52:38,708 INFO L895 garLoopResultBuilder]: At program point L320(line 320) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 (not (= 2 ~waterLevel~0))) (or (not (= ~waterLevel~0 1)) .cse0 .cse1 (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~2#1| 0))))) [2023-12-02 17:52:38,708 INFO L899 garLoopResultBuilder]: For program point L314(lines 314 322) no Hoare annotation was computed. [2023-12-02 17:52:38,708 INFO L899 garLoopResultBuilder]: For program point L310(lines 310 327) no Hoare annotation was computed. [2023-12-02 17:52:38,708 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 306 330) 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))))) [2023-12-02 17:52:38,708 INFO L895 garLoopResultBuilder]: At program point L325(line 325) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 (not (= 2 ~waterLevel~0))) (or (not (= ~waterLevel~0 1)) .cse0 .cse1))) [2023-12-02 17:52:38,709 INFO L899 garLoopResultBuilder]: For program point L325-1(lines 306 330) no Hoare annotation was computed. [2023-12-02 17:52:38,709 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 306 330) no Hoare annotation was computed. [2023-12-02 17:52:38,709 INFO L895 garLoopResultBuilder]: At program point L396(line 396) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= 1 ~systemActive~0)))) (and (or (not (= ~waterLevel~0 1)) .cse0 .cse1) (or .cse0 .cse1 (not (= 2 ~waterLevel~0)) (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~2#1| 1))))) [2023-12-02 17:52:38,709 INFO L899 garLoopResultBuilder]: For program point L396-1(line 396) no Hoare annotation was computed. [2023-12-02 17:52:38,709 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 72 83) no Hoare annotation was computed. [2023-12-02 17:52:38,709 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 72 83) the Hoare annotation is: (let ((.cse0 (not (= ~pumpRunning~0 0))) (.cse1 (not (= 1 ~systemActive~0)))) (and (or (and .cse0 (not (= ~methaneLevelCritical~0 0))) (= 2 ~waterLevel~0) .cse1 (not (= |old(~waterLevel~0)| 2))) (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse1 (= ~waterLevel~0 1)))) [2023-12-02 17:52:38,711 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:52:38,712 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 17:52:38,722 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 05:52:38 BoogieIcfgContainer [2023-12-02 17:52:38,722 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 17:52:38,722 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 17:52:38,722 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 17:52:38,722 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 17:52:38,723 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:52:09" (3/4) ... [2023-12-02 17:52:38,724 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 17:52:38,726 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2023-12-02 17:52:38,727 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2023-12-02 17:52:38,727 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2023-12-02 17:52:38,727 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2023-12-02 17:52:38,727 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2023-12-02 17:52:38,727 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2023-12-02 17:52:38,727 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2023-12-02 17:52:38,727 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2023-12-02 17:52:38,734 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 45 nodes and edges [2023-12-02 17:52:38,734 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-12-02 17:52:38,735 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-12-02 17:52:38,735 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 17:52:38,736 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 17:52:38,757 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!((\old(pumpRunning) == 0)) || (pumpRunning == 0)) || !((0 == systemActive))) && (((!((\old(pumpRunning) == 0)) || !((\old(waterLevel) == 1))) || !((1 == systemActive))) || ((pumpRunning == 0) && (waterLevel == 1)))) && ((((1 < \old(waterLevel)) || !((\old(pumpRunning) == 0))) || (waterLevel <= 1)) || !((0 == systemActive)))) && ((!((1 == systemActive)) || ((pumpRunning == \old(pumpRunning)) && (2 == waterLevel))) || !((\old(waterLevel) == 2)))) [2023-12-02 17:52:38,791 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!((\old(pumpRunning) == 0)) || (pumpRunning == 0)) || !((0 == systemActive))) && (((!((\old(pumpRunning) == 0)) || !((\old(waterLevel) == 1))) || !((1 == systemActive))) || ((pumpRunning == 0) && (waterLevel == 1)))) && ((((1 < \old(waterLevel)) || !((\old(pumpRunning) == 0))) || (waterLevel <= 1)) || !((0 == systemActive)))) && ((!((1 == systemActive)) || ((pumpRunning == \old(pumpRunning)) && (2 == waterLevel))) || !((\old(waterLevel) == 2)))) [2023-12-02 17:52:38,839 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9debc465-cb5a-48eb-995b-7fc7d0735403/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 17:52:38,839 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9debc465-cb5a-48eb-995b-7fc7d0735403/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 17:52:38,839 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 17:52:38,840 INFO L158 Benchmark]: Toolchain (without parser) took 30121.99ms. Allocated memory was 176.2MB in the beginning and 786.4MB in the end (delta: 610.3MB). Free memory was 131.6MB in the beginning and 434.4MB in the end (delta: -302.8MB). Peak memory consumption was 309.4MB. Max. memory is 16.1GB. [2023-12-02 17:52:38,840 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 176.2MB. Free memory is still 145.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 17:52:38,841 INFO L158 Benchmark]: CACSL2BoogieTranslator took 397.63ms. Allocated memory is still 176.2MB. Free memory was 131.4MB in the beginning and 111.9MB in the end (delta: 19.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 17:52:38,841 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.52ms. Allocated memory is still 176.2MB. Free memory was 111.9MB in the beginning and 109.3MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 17:52:38,842 INFO L158 Benchmark]: Boogie Preprocessor took 25.49ms. Allocated memory is still 176.2MB. Free memory was 109.3MB in the beginning and 107.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 17:52:38,842 INFO L158 Benchmark]: RCFGBuilder took 561.28ms. Allocated memory is still 176.2MB. Free memory was 107.7MB in the beginning and 79.9MB in the end (delta: 27.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-12-02 17:52:38,842 INFO L158 Benchmark]: TraceAbstraction took 28953.21ms. Allocated memory was 176.2MB in the beginning and 786.4MB in the end (delta: 610.3MB). Free memory was 79.3MB in the beginning and 441.7MB in the end (delta: -362.4MB). Peak memory consumption was 250.7MB. Max. memory is 16.1GB. [2023-12-02 17:52:38,843 INFO L158 Benchmark]: Witness Printer took 117.35ms. Allocated memory is still 786.4MB. Free memory was 441.7MB in the beginning and 434.4MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-12-02 17:52:38,844 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 176.2MB. Free memory is still 145.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 397.63ms. Allocated memory is still 176.2MB. Free memory was 131.4MB in the beginning and 111.9MB in the end (delta: 19.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.52ms. Allocated memory is still 176.2MB. Free memory was 111.9MB in the beginning and 109.3MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.49ms. Allocated memory is still 176.2MB. Free memory was 109.3MB in the beginning and 107.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 561.28ms. Allocated memory is still 176.2MB. Free memory was 107.7MB in the beginning and 79.9MB in the end (delta: 27.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 28953.21ms. Allocated memory was 176.2MB in the beginning and 786.4MB in the end (delta: 610.3MB). Free memory was 79.3MB in the beginning and 441.7MB in the end (delta: -362.4MB). Peak memory consumption was 250.7MB. Max. memory is 16.1GB. * Witness Printer took 117.35ms. Allocated memory is still 786.4MB. Free memory was 441.7MB in the beginning and 434.4MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 49]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [49] - GenericResultAtLocation [Line: 160]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [160] - GenericResultAtLocation [Line: 188]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [188] - GenericResultAtLocation [Line: 197]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [197] - GenericResultAtLocation [Line: 267]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [267] - GenericResultAtLocation [Line: 500]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [500] - GenericResultAtLocation [Line: 866]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [866] - GenericResultAtLocation [Line: 904]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [904] * 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: 193]: 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 9 procedures, 65 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 28.9s, OverallIterations: 10, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1985 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1965 mSDsluCounter, 2206 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1631 mSDsCounter, 956 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2095 IncrementalHoareTripleChecker+Invalid, 3051 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 956 mSolverCounterUnsat, 575 mSDtfsCounter, 2095 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 726 GetRequests, 472 SyntacticMatches, 17 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8180 ImplicationChecksByTransitivity, 10.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=715occurred in iteration=7, InterpolantAutomatonStates: 117, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 333 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 24 LocationsWithAnnotation, 890 PreInvPairs, 955 NumberOfFragments, 703 HoareAnnotationTreeSize, 890 FomulaSimplifications, 6688 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 24 FomulaSimplificationsInter, 8723 FormulaSimplificationTreeSizeReductionInter, 1.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 616 NumberOfCodeBlocks, 616 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 790 ConstructedInterpolants, 0 QuantifiedInterpolants, 3273 SizeOfPredicates, 19 NumberOfNonLiveVariables, 658 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 14 InterpolantComputations, 8 PerfectInterpolantSequences, 365/551 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: 210]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 211]: Loop Invariant Derived loop invariant: (((((((2 == waterLevel) && (methaneLevelCritical == 0)) && (1 == systemActive)) && (splverifierCounter == 0)) || ((((pumpRunning == 0) && (1 == systemActive)) && (splverifierCounter == 0)) && (waterLevel == 1))) || ((((pumpRunning == 0) && (2 == waterLevel)) && (1 == systemActive)) && (splverifierCounter == 0))) || (((pumpRunning == 0) && (splverifierCounter == 0)) && (0 == systemActive))) - InvariantResult [Line: 916]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 274]: Loop Invariant Derived loop invariant: (((((!((\old(pumpRunning) == 0)) || (pumpRunning == 0)) || !((0 == systemActive))) && (((!((\old(pumpRunning) == 0)) || !((\old(waterLevel) == 1))) || !((1 == systemActive))) || ((pumpRunning == 0) && (waterLevel == 1)))) && ((((1 < \old(waterLevel)) || !((\old(pumpRunning) == 0))) || (waterLevel <= 1)) || !((0 == systemActive)))) && ((!((1 == systemActive)) || ((pumpRunning == \old(pumpRunning)) && (2 == waterLevel))) || !((\old(waterLevel) == 2)))) RESULT: Ultimate proved your program to be correct! [2023-12-02 17:52:38,862 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9debc465-cb5a-48eb-995b-7fc7d0735403/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE