./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product62.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_c0b94d5d-feee-4dc5-a528-aa2101999fb9/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b94d5d-feee-4dc5-a528-aa2101999fb9/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_c0b94d5d-feee-4dc5-a528-aa2101999fb9/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b94d5d-feee-4dc5-a528-aa2101999fb9/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product62.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b94d5d-feee-4dc5-a528-aa2101999fb9/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_c0b94d5d-feee-4dc5-a528-aa2101999fb9/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 894b9126919d6af09c0902d1c20b8183acfd3589fe20590a119ca487cf6e7a3f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:34:42,845 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:34:42,907 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b94d5d-feee-4dc5-a528-aa2101999fb9/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 17:34:42,911 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:34:42,912 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:34:42,935 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:34:42,935 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:34:42,935 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:34:42,936 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:34:42,937 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:34:42,937 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:34:42,938 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:34:42,938 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:34:42,939 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 17:34:42,939 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:34:42,940 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:34:42,940 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 17:34:42,941 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 17:34:42,941 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:34:42,942 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 17:34:42,942 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 17:34:42,943 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 17:34:42,944 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:34:42,944 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:34:42,945 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 17:34:42,945 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 17:34:42,946 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 17:34:42,946 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:34:42,946 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:34:42,947 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:34:42,947 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:34:42,947 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 17:34:42,948 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:34:42,948 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:34:42,948 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:34:42,948 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:34:42,949 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:34:42,949 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:34:42,949 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:34:42,949 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:34:42,949 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 17:34:42,950 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 17:34:42,950 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 17:34:42,950 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:34:42,950 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 17:34:42,950 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:34:42,951 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:34:42,951 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_c0b94d5d-feee-4dc5-a528-aa2101999fb9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b94d5d-feee-4dc5-a528-aa2101999fb9/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 894b9126919d6af09c0902d1c20b8183acfd3589fe20590a119ca487cf6e7a3f [2023-12-02 17:34:43,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:34:43,164 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:34:43,166 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:34:43,167 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:34:43,168 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:34:43,169 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b94d5d-feee-4dc5-a528-aa2101999fb9/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/product-lines/minepump_spec4_product62.cil.c [2023-12-02 17:34:45,892 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:34:46,092 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:34:46,093 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b94d5d-feee-4dc5-a528-aa2101999fb9/sv-benchmarks/c/product-lines/minepump_spec4_product62.cil.c [2023-12-02 17:34:46,109 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b94d5d-feee-4dc5-a528-aa2101999fb9/bin/utaipan-verify-nQ1chXbOIh/data/aa48418d3/5b901e432ba54f20a1593fcbcccbfc61/FLAG621a6c62f [2023-12-02 17:34:46,123 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b94d5d-feee-4dc5-a528-aa2101999fb9/bin/utaipan-verify-nQ1chXbOIh/data/aa48418d3/5b901e432ba54f20a1593fcbcccbfc61 [2023-12-02 17:34:46,125 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:34:46,127 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:34:46,128 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:34:46,128 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:34:46,133 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:34:46,134 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:34:46" (1/1) ... [2023-12-02 17:34:46,135 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@716f82fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:46, skipping insertion in model container [2023-12-02 17:34:46,135 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:34:46" (1/1) ... [2023-12-02 17:34:46,183 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:34:46,334 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_c0b94d5d-feee-4dc5-a528-aa2101999fb9/sv-benchmarks/c/product-lines/minepump_spec4_product62.cil.c[1605,1618] [2023-12-02 17:34:46,440 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:34:46,452 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:34:46,463 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [49] [2023-12-02 17:34:46,465 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [58] [2023-12-02 17:34:46,465 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [130] [2023-12-02 17:34:46,465 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification4_spec.i","") [388] [2023-12-02 17:34:46,465 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [415] [2023-12-02 17:34:46,466 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [453] [2023-12-02 17:34:46,466 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [549] [2023-12-02 17:34:46,466 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [915] [2023-12-02 17:34:46,470 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_c0b94d5d-feee-4dc5-a528-aa2101999fb9/sv-benchmarks/c/product-lines/minepump_spec4_product62.cil.c[1605,1618] [2023-12-02 17:34:46,519 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:34:46,539 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:34:46,539 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:46 WrapperNode [2023-12-02 17:34:46,540 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:34:46,541 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:34:46,541 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:34:46,541 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:34:46,549 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:46" (1/1) ... [2023-12-02 17:34:46,562 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:46" (1/1) ... [2023-12-02 17:34:46,589 INFO L138 Inliner]: procedures = 58, calls = 105, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 239 [2023-12-02 17:34:46,590 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:34:46,590 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:34:46,590 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:34:46,591 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:34:46,600 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:46" (1/1) ... [2023-12-02 17:34:46,600 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:46" (1/1) ... [2023-12-02 17:34:46,603 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:46" (1/1) ... [2023-12-02 17:34:46,603 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:46" (1/1) ... [2023-12-02 17:34:46,607 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:46" (1/1) ... [2023-12-02 17:34:46,611 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:46" (1/1) ... [2023-12-02 17:34:46,612 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:46" (1/1) ... [2023-12-02 17:34:46,613 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:46" (1/1) ... [2023-12-02 17:34:46,616 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:34:46,616 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:34:46,616 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:34:46,616 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:34:46,617 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:46" (1/1) ... [2023-12-02 17:34:46,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:34:46,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b94d5d-feee-4dc5-a528-aa2101999fb9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:34:46,649 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b94d5d-feee-4dc5-a528-aa2101999fb9/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:34:46,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b94d5d-feee-4dc5-a528-aa2101999fb9/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:34:46,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 17:34:46,681 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-12-02 17:34:46,681 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-12-02 17:34:46,681 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-12-02 17:34:46,681 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-12-02 17:34:46,682 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-12-02 17:34:46,682 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-12-02 17:34:46,682 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-12-02 17:34:46,682 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-12-02 17:34:46,682 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-12-02 17:34:46,682 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-12-02 17:34:46,683 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2023-12-02 17:34:46,683 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2023-12-02 17:34:46,683 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-12-02 17:34:46,683 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-12-02 17:34:46,683 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-12-02 17:34:46,683 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-12-02 17:34:46,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 17:34:46,684 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-12-02 17:34:46,684 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-12-02 17:34:46,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:34:46,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:34:46,755 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:34:46,756 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:34:47,018 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:34:47,147 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:34:47,147 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 17:34:47,149 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:34:47 BoogieIcfgContainer [2023-12-02 17:34:47,149 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:34:47,152 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:34:47,152 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:34:47,156 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:34:47,156 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:34:46" (1/3) ... [2023-12-02 17:34:47,157 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b968950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:34:47, skipping insertion in model container [2023-12-02 17:34:47,157 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:34:46" (2/3) ... [2023-12-02 17:34:47,157 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b968950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:34:47, skipping insertion in model container [2023-12-02 17:34:47,158 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:34:47" (3/3) ... [2023-12-02 17:34:47,159 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product62.cil.c [2023-12-02 17:34:47,175 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:34:47,175 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 17:34:47,214 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:34:47,219 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;@63fb7b68, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:34:47,219 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 17:34:47,222 INFO L276 IsEmpty]: Start isEmpty. Operand has 68 states, 41 states have (on average 1.4146341463414633) internal successors, (58), 51 states have internal predecessors, (58), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-02 17:34:47,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 17:34:47,229 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:34:47,229 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:34:47,230 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:34:47,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:34:47,233 INFO L85 PathProgramCache]: Analyzing trace with hash -447725306, now seen corresponding path program 1 times [2023-12-02 17:34:47,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:34:47,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144282132] [2023-12-02 17:34:47,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:34:47,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:34:47,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:34:47,390 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 17:34:47,392 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:34:47,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144282132] [2023-12-02 17:34:47,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144282132] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:34:47,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:34:47,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:34:47,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164804787] [2023-12-02 17:34:47,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:34:47,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 17:34:47,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:34:47,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 17:34:47,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 17:34:47,431 INFO L87 Difference]: Start difference. First operand has 68 states, 41 states have (on average 1.4146341463414633) internal successors, (58), 51 states have internal predecessors, (58), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 11 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:34:47,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:34:47,495 INFO L93 Difference]: Finished difference Result 134 states and 181 transitions. [2023-12-02 17:34:47,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 17:34:47,497 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-12-02 17:34:47,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:34:47,505 INFO L225 Difference]: With dead ends: 134 [2023-12-02 17:34:47,505 INFO L226 Difference]: Without dead ends: 63 [2023-12-02 17:34:47,508 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 17:34:47,512 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:34:47,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 69 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:34:47,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-12-02 17:34:47,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2023-12-02 17:34:47,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 47 states have internal predecessors, (50), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (15), 10 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-02 17:34:47,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 81 transitions. [2023-12-02 17:34:47,548 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 81 transitions. Word has length 12 [2023-12-02 17:34:47,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:34:47,549 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 81 transitions. [2023-12-02 17:34:47,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:34:47,549 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 81 transitions. [2023-12-02 17:34:47,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-02 17:34:47,551 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:34:47,551 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:34:47,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 17:34:47,552 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:34:47,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:34:47,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1960427078, now seen corresponding path program 1 times [2023-12-02 17:34:47,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:34:47,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035115260] [2023-12-02 17:34:47,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:34:47,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:34:47,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:34:47,642 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 17:34:47,642 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:34:47,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035115260] [2023-12-02 17:34:47,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035115260] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:34:47,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:34:47,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:34:47,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734839706] [2023-12-02 17:34:47,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:34:47,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:34:47,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:34:47,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:34:47,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:34:47,646 INFO L87 Difference]: Start difference. First operand 63 states and 81 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:34:47,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:34:47,692 INFO L93 Difference]: Finished difference Result 103 states and 133 transitions. [2023-12-02 17:34:47,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:34:47,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-02 17:34:47,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:34:47,694 INFO L225 Difference]: With dead ends: 103 [2023-12-02 17:34:47,695 INFO L226 Difference]: Without dead ends: 55 [2023-12-02 17:34:47,696 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 17:34:47,697 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 7 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:34:47,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 101 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:34:47,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-12-02 17:34:47,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2023-12-02 17:34:47,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 42 states have internal predecessors, (44), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 8 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 17:34:47,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2023-12-02 17:34:47,708 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 13 [2023-12-02 17:34:47,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:34:47,709 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2023-12-02 17:34:47,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:34:47,709 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2023-12-02 17:34:47,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 17:34:47,710 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:34:47,710 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:34:47,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 17:34:47,711 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:34:47,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:34:47,711 INFO L85 PathProgramCache]: Analyzing trace with hash 995637663, now seen corresponding path program 1 times [2023-12-02 17:34:47,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:34:47,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679754416] [2023-12-02 17:34:47,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:34:47,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:34:47,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:34:47,869 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 17:34:47,870 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:34:47,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679754416] [2023-12-02 17:34:47,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679754416] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:34:47,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:34:47,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:34:47,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073915455] [2023-12-02 17:34:47,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:34:47,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:34:47,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:34:47,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:34:47,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:34:47,872 INFO L87 Difference]: Start difference. First operand 55 states and 70 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:34:47,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:34:47,964 INFO L93 Difference]: Finished difference Result 108 states and 139 transitions. [2023-12-02 17:34:47,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:34:47,965 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-12-02 17:34:47,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:34:47,966 INFO L225 Difference]: With dead ends: 108 [2023-12-02 17:34:47,966 INFO L226 Difference]: Without dead ends: 55 [2023-12-02 17:34:47,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:34:47,969 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 60 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:34:47,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 71 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:34:47,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-12-02 17:34:47,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2023-12-02 17:34:47,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 33 states have (on average 1.303030303030303) internal successors, (43), 42 states have internal predecessors, (43), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 8 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 17:34:47,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 69 transitions. [2023-12-02 17:34:47,981 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 69 transitions. Word has length 15 [2023-12-02 17:34:47,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:34:47,982 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 69 transitions. [2023-12-02 17:34:47,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:34:47,982 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 69 transitions. [2023-12-02 17:34:47,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-02 17:34:47,984 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:34:47,984 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:34:47,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 17:34:47,984 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:34:47,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:34:47,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1267789084, now seen corresponding path program 1 times [2023-12-02 17:34:47,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:34:47,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834287507] [2023-12-02 17:34:47,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:34:48,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:34:48,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:34:48,076 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 17:34:48,076 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:34:48,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834287507] [2023-12-02 17:34:48,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834287507] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:34:48,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:34:48,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:34:48,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047515936] [2023-12-02 17:34:48,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:34:48,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:34:48,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:34:48,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:34:48,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:34:48,080 INFO L87 Difference]: Start difference. First operand 55 states and 69 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 17:34:48,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:34:48,149 INFO L93 Difference]: Finished difference Result 144 states and 185 transitions. [2023-12-02 17:34:48,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:34:48,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2023-12-02 17:34:48,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:34:48,151 INFO L225 Difference]: With dead ends: 144 [2023-12-02 17:34:48,152 INFO L226 Difference]: Without dead ends: 91 [2023-12-02 17:34:48,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:34:48,154 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 41 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:34:48,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 94 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:34:48,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-12-02 17:34:48,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 89. [2023-12-02 17:34:48,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 57 states have (on average 1.2456140350877194) internal successors, (71), 65 states have internal predecessors, (71), 16 states have call successors, (16), 15 states have call predecessors, (16), 15 states have return successors, (22), 14 states have call predecessors, (22), 16 states have call successors, (22) [2023-12-02 17:34:48,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 109 transitions. [2023-12-02 17:34:48,176 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 109 transitions. Word has length 25 [2023-12-02 17:34:48,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:34:48,177 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 109 transitions. [2023-12-02 17:34:48,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 17:34:48,177 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 109 transitions. [2023-12-02 17:34:48,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-02 17:34:48,178 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:34:48,178 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:34:48,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 17:34:48,179 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:34:48,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:34:48,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1905441282, now seen corresponding path program 1 times [2023-12-02 17:34:48,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:34:48,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268470659] [2023-12-02 17:34:48,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:34:48,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:34:48,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:34:48,330 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 17:34:48,330 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:34:48,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268470659] [2023-12-02 17:34:48,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268470659] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:34:48,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:34:48,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 17:34:48,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317346951] [2023-12-02 17:34:48,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:34:48,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:34:48,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:34:48,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:34:48,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:34:48,334 INFO L87 Difference]: Start difference. First operand 89 states and 109 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 17:34:48,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:34:48,537 INFO L93 Difference]: Finished difference Result 115 states and 137 transitions. [2023-12-02 17:34:48,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 17:34:48,538 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2023-12-02 17:34:48,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:34:48,540 INFO L225 Difference]: With dead ends: 115 [2023-12-02 17:34:48,541 INFO L226 Difference]: Without dead ends: 113 [2023-12-02 17:34:48,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-02 17:34:48,543 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 67 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:34:48,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 128 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:34:48,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-12-02 17:34:48,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 107. [2023-12-02 17:34:48,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 70 states have (on average 1.2285714285714286) internal successors, (86), 78 states have internal predecessors, (86), 16 states have call successors, (16), 15 states have call predecessors, (16), 20 states have return successors, (27), 18 states have call predecessors, (27), 16 states have call successors, (27) [2023-12-02 17:34:48,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 129 transitions. [2023-12-02 17:34:48,564 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 129 transitions. Word has length 31 [2023-12-02 17:34:48,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:34:48,564 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 129 transitions. [2023-12-02 17:34:48,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 17:34:48,565 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 129 transitions. [2023-12-02 17:34:48,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-12-02 17:34:48,566 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:34:48,567 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:34:48,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 17:34:48,567 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:34:48,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:34:48,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1628112708, now seen corresponding path program 1 times [2023-12-02 17:34:48,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:34:48,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568868742] [2023-12-02 17:34:48,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:34:48,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:34:48,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:34:48,855 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 17:34:48,855 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:34:48,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568868742] [2023-12-02 17:34:48,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568868742] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:34:48,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:34:48,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 17:34:48,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965624979] [2023-12-02 17:34:48,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:34:48,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 17:34:48,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:34:48,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 17:34:48,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-02 17:34:48,858 INFO L87 Difference]: Start difference. First operand 107 states and 129 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 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 17:34:49,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:34:49,072 INFO L93 Difference]: Finished difference Result 271 states and 331 transitions. [2023-12-02 17:34:49,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-02 17:34:49,073 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 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 17:34:49,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:34:49,076 INFO L225 Difference]: With dead ends: 271 [2023-12-02 17:34:49,076 INFO L226 Difference]: Without dead ends: 166 [2023-12-02 17:34:49,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-12-02 17:34:49,078 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 67 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:34:49,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 257 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 17:34:49,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-12-02 17:34:49,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 140. [2023-12-02 17:34:49,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 93 states have (on average 1.2043010752688172) internal successors, (112), 102 states have internal predecessors, (112), 21 states have call successors, (21), 20 states have call predecessors, (21), 25 states have return successors, (32), 23 states have call predecessors, (32), 21 states have call successors, (32) [2023-12-02 17:34:49,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 165 transitions. [2023-12-02 17:34:49,107 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 165 transitions. Word has length 32 [2023-12-02 17:34:49,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:34:49,108 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 165 transitions. [2023-12-02 17:34:49,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 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 17:34:49,108 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 165 transitions. [2023-12-02 17:34:49,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-02 17:34:49,110 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:34:49,110 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:34:49,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 17:34:49,110 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:34:49,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:34:49,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1823332494, now seen corresponding path program 1 times [2023-12-02 17:34:49,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:34:49,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146465509] [2023-12-02 17:34:49,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:34:49,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:34:49,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:34:49,423 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 17:34:49,423 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:34:49,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146465509] [2023-12-02 17:34:49,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146465509] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:34:49,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:34:49,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-02 17:34:49,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661765604] [2023-12-02 17:34:49,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:34:49,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 17:34:49,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:34:49,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 17:34:49,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-02 17:34:49,425 INFO L87 Difference]: Start difference. First operand 140 states and 165 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 17:34:49,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:34:49,858 INFO L93 Difference]: Finished difference Result 344 states and 415 transitions. [2023-12-02 17:34:49,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 17:34:49,858 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 35 [2023-12-02 17:34:49,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:34:49,861 INFO L225 Difference]: With dead ends: 344 [2023-12-02 17:34:49,861 INFO L226 Difference]: Without dead ends: 239 [2023-12-02 17:34:49,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-12-02 17:34:49,863 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 176 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:34:49,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 173 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 17:34:49,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2023-12-02 17:34:49,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 222. [2023-12-02 17:34:49,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 147 states have (on average 1.1972789115646258) internal successors, (176), 163 states have internal predecessors, (176), 35 states have call successors, (35), 30 states have call predecessors, (35), 39 states have return successors, (54), 38 states have call predecessors, (54), 35 states have call successors, (54) [2023-12-02 17:34:49,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 265 transitions. [2023-12-02 17:34:49,898 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 265 transitions. Word has length 35 [2023-12-02 17:34:49,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:34:49,898 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 265 transitions. [2023-12-02 17:34:49,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 17:34:49,898 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 265 transitions. [2023-12-02 17:34:49,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-02 17:34:49,902 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:34:49,902 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-02 17:34:49,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 17:34:49,903 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:34:49,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:34:49,903 INFO L85 PathProgramCache]: Analyzing trace with hash -2090691781, now seen corresponding path program 1 times [2023-12-02 17:34:49,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:34:49,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048463592] [2023-12-02 17:34:49,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:34:49,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:34:49,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:34:50,126 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 17:34:50,126 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:34:50,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048463592] [2023-12-02 17:34:50,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048463592] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:34:50,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423503629] [2023-12-02 17:34:50,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:34:50,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:34:50,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b94d5d-feee-4dc5-a528-aa2101999fb9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:34:50,129 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b94d5d-feee-4dc5-a528-aa2101999fb9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:34:50,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b94d5d-feee-4dc5-a528-aa2101999fb9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 17:34:50,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:34:50,225 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-02 17:34:50,232 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:34:50,287 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-02 17:34:50,287 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:34:50,391 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-12-02 17:34:50,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423503629] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 17:34:50,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:34:50,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10, 5] total 11 [2023-12-02 17:34:50,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632578336] [2023-12-02 17:34:50,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:34:50,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 17:34:50,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:34:50,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 17:34:50,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-02 17:34:50,394 INFO L87 Difference]: Start difference. First operand 222 states and 265 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 17:34:50,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:34:50,557 INFO L93 Difference]: Finished difference Result 369 states and 448 transitions. [2023-12-02 17:34:50,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:34:50,559 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 70 [2023-12-02 17:34:50,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:34:50,562 INFO L225 Difference]: With dead ends: 369 [2023-12-02 17:34:50,562 INFO L226 Difference]: Without dead ends: 252 [2023-12-02 17:34:50,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-12-02 17:34:50,564 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 65 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:34:50,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 164 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:34:50,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2023-12-02 17:34:50,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 244. [2023-12-02 17:34:50,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 163 states have (on average 1.1901840490797546) internal successors, (194), 180 states have internal predecessors, (194), 38 states have call successors, (38), 33 states have call predecessors, (38), 42 states have return successors, (53), 42 states have call predecessors, (53), 38 states have call successors, (53) [2023-12-02 17:34:50,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 285 transitions. [2023-12-02 17:34:50,600 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 285 transitions. Word has length 70 [2023-12-02 17:34:50,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:34:50,601 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 285 transitions. [2023-12-02 17:34:50,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-12-02 17:34:50,601 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 285 transitions. [2023-12-02 17:34:50,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-02 17:34:50,603 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:34:50,603 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:34:50,610 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b94d5d-feee-4dc5-a528-aa2101999fb9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-02 17:34:50,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b94d5d-feee-4dc5-a528-aa2101999fb9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:34:50,808 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:34:50,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:34:50,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1566839888, now seen corresponding path program 1 times [2023-12-02 17:34:50,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:34:50,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473588738] [2023-12-02 17:34:50,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:34:50,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:34:50,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:34:50,964 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 17:34:50,964 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:34:50,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473588738] [2023-12-02 17:34:50,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473588738] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:34:50,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616597794] [2023-12-02 17:34:50,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:34:50,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:34:50,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b94d5d-feee-4dc5-a528-aa2101999fb9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:34:50,966 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b94d5d-feee-4dc5-a528-aa2101999fb9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:34:50,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b94d5d-feee-4dc5-a528-aa2101999fb9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 17:34:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:34:51,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-02 17:34:51,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:34:51,204 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:34:51,205 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:34:51,306 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 17:34:51,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616597794] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:34:51,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [523163570] [2023-12-02 17:34:51,323 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2023-12-02 17:34:51,323 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:34:51,326 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:34:51,329 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:34:51,330 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:34:59,206 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 41 for LOIs [2023-12-02 17:34:59,220 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 7 for LOIs [2023-12-02 17:34:59,288 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 9 for LOIs [2023-12-02 17:34:59,318 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 9 for LOIs [2023-12-02 17:34:59,400 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 10 for LOIs [2023-12-02 17:34:59,402 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:35:02,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [523163570] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:35:02,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 17:35:02,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [8, 6, 6] total 39 [2023-12-02 17:35:02,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789118686] [2023-12-02 17:35:02,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:35:02,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-12-02 17:35:02,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:35:02,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-12-02 17:35:02,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1317, Unknown=0, NotChecked=0, Total=1482 [2023-12-02 17:35:02,457 INFO L87 Difference]: Start difference. First operand 244 states and 285 transitions. Second operand has 28 states, 21 states have (on average 1.380952380952381) internal successors, (29), 23 states have internal predecessors, (29), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 17:35:07,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:35:07,704 INFO L93 Difference]: Finished difference Result 565 states and 688 transitions. [2023-12-02 17:35:07,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-12-02 17:35:07,705 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 21 states have (on average 1.380952380952381) internal successors, (29), 23 states have internal predecessors, (29), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 65 [2023-12-02 17:35:07,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:35:07,708 INFO L225 Difference]: With dead ends: 565 [2023-12-02 17:35:07,708 INFO L226 Difference]: Without dead ends: 356 [2023-12-02 17:35:07,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 958 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=515, Invalid=3645, Unknown=0, NotChecked=0, Total=4160 [2023-12-02 17:35:07,711 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 158 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 1361 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 1461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-12-02 17:35:07,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 315 Invalid, 1461 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1361 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-12-02 17:35:07,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2023-12-02 17:35:07,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 292. [2023-12-02 17:35:07,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 196 states have (on average 1.1581632653061225) internal successors, (227), 214 states have internal predecessors, (227), 47 states have call successors, (47), 42 states have call predecessors, (47), 48 states have return successors, (62), 48 states have call predecessors, (62), 47 states have call successors, (62) [2023-12-02 17:35:07,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 336 transitions. [2023-12-02 17:35:07,762 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 336 transitions. Word has length 65 [2023-12-02 17:35:07,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:35:07,763 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 336 transitions. [2023-12-02 17:35:07,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 21 states have (on average 1.380952380952381) internal successors, (29), 23 states have internal predecessors, (29), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 17:35:07,763 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 336 transitions. [2023-12-02 17:35:07,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-02 17:35:07,765 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:35:07,766 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2023-12-02 17:35:07,771 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b94d5d-feee-4dc5-a528-aa2101999fb9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 17:35:07,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b94d5d-feee-4dc5-a528-aa2101999fb9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:35:07,968 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:35:07,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:35:07,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1884294558, now seen corresponding path program 1 times [2023-12-02 17:35:07,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:35:07,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371497630] [2023-12-02 17:35:07,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:35:07,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:35:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:35:08,395 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 17:35:08,395 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:35:08,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371497630] [2023-12-02 17:35:08,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371497630] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:35:08,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057869352] [2023-12-02 17:35:08,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:35:08,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:35:08,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b94d5d-feee-4dc5-a528-aa2101999fb9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:35:08,397 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b94d5d-feee-4dc5-a528-aa2101999fb9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:35:08,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b94d5d-feee-4dc5-a528-aa2101999fb9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 17:35:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:35:08,498 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-02 17:35:08,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:35:08,778 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 17:35:08,778 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:35:09,182 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 17:35:09,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057869352] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:35:09,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1529991137] [2023-12-02 17:35:09,187 INFO L159 IcfgInterpreter]: Started Sifa with 47 locations of interest [2023-12-02 17:35:09,187 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:35:09,188 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:35:09,188 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:35:09,188 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:35:16,023 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 10 for LOIs [2023-12-02 17:35:16,026 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 7 for LOIs [2023-12-02 17:35:16,128 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 9 for LOIs [2023-12-02 17:35:16,159 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 17 for LOIs [2023-12-02 17:35:16,257 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 13 for LOIs [2023-12-02 17:35:16,260 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 9 for LOIs [2023-12-02 17:35:16,262 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:35:19,393 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6028#(and (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~3#1| 0)) (<= |timeShift_isPumpRunning_#res#1| 2147483647) (= |timeShift_isPumpRunning_#res#1| ~pumpRunning~0) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~7#1| 0) (= |timeShift_getWaterLevel_#res#1| 0) (or (= ~methaneLevelCritical~0 0) (= |old(~pumpRunning~0)| 0)) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~3#1|) (= ~waterLevel~0 0) (<= 0 (+ |timeShift_isPumpRunning_#res#1| 2147483648)))' at error location [2023-12-02 17:35:19,393 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:35:19,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 17:35:19,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 13] total 32 [2023-12-02 17:35:19,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789700828] [2023-12-02 17:35:19,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 17:35:19,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-12-02 17:35:19,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:35:19,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-12-02 17:35:19,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=474, Invalid=4356, Unknown=0, NotChecked=0, Total=4830 [2023-12-02 17:35:19,399 INFO L87 Difference]: Start difference. First operand 292 states and 336 transitions. Second operand has 32 states, 29 states have (on average 3.8275862068965516) internal successors, (111), 29 states have internal predecessors, (111), 13 states have call successors, (24), 10 states have call predecessors, (24), 8 states have return successors, (21), 12 states have call predecessors, (21), 11 states have call successors, (21) [2023-12-02 17:35:23,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:35:23,128 INFO L93 Difference]: Finished difference Result 1077 states and 1277 transitions. [2023-12-02 17:35:23,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2023-12-02 17:35:23,128 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 3.8275862068965516) internal successors, (111), 29 states have internal predecessors, (111), 13 states have call successors, (24), 10 states have call predecessors, (24), 8 states have return successors, (21), 12 states have call predecessors, (21), 11 states have call successors, (21) Word has length 69 [2023-12-02 17:35:23,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:35:23,133 INFO L225 Difference]: With dead ends: 1077 [2023-12-02 17:35:23,133 INFO L226 Difference]: Without dead ends: 787 [2023-12-02 17:35:23,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8133 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=2380, Invalid=19082, Unknown=0, NotChecked=0, Total=21462 [2023-12-02 17:35:23,141 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 1226 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 2110 mSolverCounterSat, 883 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1235 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 2993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 883 IncrementalHoareTripleChecker+Valid, 2110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 17:35:23,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1235 Valid, 683 Invalid, 2993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [883 Valid, 2110 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 17:35:23,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2023-12-02 17:35:23,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 736. [2023-12-02 17:35:23,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 487 states have (on average 1.1478439425051334) internal successors, (559), 531 states have internal predecessors, (559), 118 states have call successors, (118), 105 states have call predecessors, (118), 130 states have return successors, (174), 127 states have call predecessors, (174), 118 states have call successors, (174) [2023-12-02 17:35:23,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 851 transitions. [2023-12-02 17:35:23,240 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 851 transitions. Word has length 69 [2023-12-02 17:35:23,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:35:23,240 INFO L495 AbstractCegarLoop]: Abstraction has 736 states and 851 transitions. [2023-12-02 17:35:23,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 3.8275862068965516) internal successors, (111), 29 states have internal predecessors, (111), 13 states have call successors, (24), 10 states have call predecessors, (24), 8 states have return successors, (21), 12 states have call predecessors, (21), 11 states have call successors, (21) [2023-12-02 17:35:23,241 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 851 transitions. [2023-12-02 17:35:23,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-12-02 17:35:23,243 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:35:23,244 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-12-02 17:35:23,249 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b94d5d-feee-4dc5-a528-aa2101999fb9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 17:35:23,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b94d5d-feee-4dc5-a528-aa2101999fb9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:35:23,444 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:35:23,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:35:23,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1487994542, now seen corresponding path program 2 times [2023-12-02 17:35:23,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:35:23,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184811795] [2023-12-02 17:35:23,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:35:23,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:35:23,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:35:24,163 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 32 proven. 19 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-02 17:35:24,164 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:35:24,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184811795] [2023-12-02 17:35:24,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184811795] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:35:24,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155392495] [2023-12-02 17:35:24,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 17:35:24,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:35:24,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b94d5d-feee-4dc5-a528-aa2101999fb9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:35:24,165 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b94d5d-feee-4dc5-a528-aa2101999fb9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:35:24,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b94d5d-feee-4dc5-a528-aa2101999fb9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 17:35:24,253 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 17:35:24,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 17:35:24,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 17 conjunts are in the unsatisfiable core [2023-12-02 17:35:24,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:35:24,350 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-02 17:35:24,350 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:35:24,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155392495] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:35:24,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 17:35:24,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15] total 19 [2023-12-02 17:35:24,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586207393] [2023-12-02 17:35:24,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:35:24,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:35:24,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:35:24,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:35:24,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2023-12-02 17:35:24,353 INFO L87 Difference]: Start difference. First operand 736 states and 851 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-02 17:35:24,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:35:24,626 INFO L93 Difference]: Finished difference Result 1392 states and 1629 transitions. [2023-12-02 17:35:24,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 17:35:24,627 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 103 [2023-12-02 17:35:24,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:35:24,633 INFO L225 Difference]: With dead ends: 1392 [2023-12-02 17:35:24,634 INFO L226 Difference]: Without dead ends: 776 [2023-12-02 17:35:24,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2023-12-02 17:35:24,637 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 61 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:35:24,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 366 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:35:24,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2023-12-02 17:35:24,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 741. [2023-12-02 17:35:24,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 492 states have (on average 1.1382113821138211) internal successors, (560), 537 states have internal predecessors, (560), 121 states have call successors, (121), 105 states have call predecessors, (121), 127 states have return successors, (170), 124 states have call predecessors, (170), 121 states have call successors, (170) [2023-12-02 17:35:24,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 851 transitions. [2023-12-02 17:35:24,742 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 851 transitions. Word has length 103 [2023-12-02 17:35:24,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:35:24,743 INFO L495 AbstractCegarLoop]: Abstraction has 741 states and 851 transitions. [2023-12-02 17:35:24,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-12-02 17:35:24,743 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 851 transitions. [2023-12-02 17:35:24,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-02 17:35:24,746 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:35:24,746 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2023-12-02 17:35:24,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b94d5d-feee-4dc5-a528-aa2101999fb9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 17:35:24,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b94d5d-feee-4dc5-a528-aa2101999fb9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:35:24,947 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:35:24,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:35:24,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1979038242, now seen corresponding path program 1 times [2023-12-02 17:35:24,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:35:24,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232636878] [2023-12-02 17:35:24,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:35:24,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:35:24,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:35:25,108 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 55 proven. 7 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-12-02 17:35:25,108 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:35:25,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232636878] [2023-12-02 17:35:25,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232636878] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:35:25,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851472789] [2023-12-02 17:35:25,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:35:25,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:35:25,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b94d5d-feee-4dc5-a528-aa2101999fb9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:35:25,110 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b94d5d-feee-4dc5-a528-aa2101999fb9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:35:25,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b94d5d-feee-4dc5-a528-aa2101999fb9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 17:35:25,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:35:25,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-02 17:35:25,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:35:25,600 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 95 proven. 14 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-12-02 17:35:25,601 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:35:25,938 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 56 proven. 7 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2023-12-02 17:35:25,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851472789] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 17:35:25,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [230998112] [2023-12-02 17:35:25,941 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2023-12-02 17:35:25,941 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 17:35:25,942 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 17:35:25,942 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 17:35:25,942 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 17:35:32,282 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 10 for LOIs [2023-12-02 17:35:32,285 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 7 for LOIs [2023-12-02 17:35:32,353 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 22 for LOIs [2023-12-02 17:35:32,399 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 34 for LOIs [2023-12-02 17:35:32,495 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 28 for LOIs [2023-12-02 17:35:32,504 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 13 for LOIs [2023-12-02 17:35:32,505 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 19 for LOIs [2023-12-02 17:35:32,507 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 17:35:36,017 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12562#(and (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~3#1| 0)) (<= |timeShift_isPumpRunning_#res#1| 2147483647) (= |timeShift_isPumpRunning_#res#1| ~pumpRunning~0) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~7#1| 0) (= |timeShift_getWaterLevel_#res#1| 0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~3#1|) (= ~waterLevel~0 0) (<= 0 (+ |timeShift_isPumpRunning_#res#1| 2147483648)))' at error location [2023-12-02 17:35:36,017 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 17:35:36,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 17:35:36,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13, 7] total 22 [2023-12-02 17:35:36,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608703641] [2023-12-02 17:35:36,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 17:35:36,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-02 17:35:36,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:35:36,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-02 17:35:36,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=3520, Unknown=0, NotChecked=0, Total=3782 [2023-12-02 17:35:36,021 INFO L87 Difference]: Start difference. First operand 741 states and 851 transitions. Second operand has 22 states, 21 states have (on average 6.476190476190476) internal successors, (136), 21 states have internal predecessors, (136), 9 states have call successors, (28), 6 states have call predecessors, (28), 8 states have return successors, (32), 10 states have call predecessors, (32), 9 states have call successors, (32) [2023-12-02 17:35:38,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:35:38,520 INFO L93 Difference]: Finished difference Result 1788 states and 2134 transitions. [2023-12-02 17:35:38,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-12-02 17:35:38,521 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 6.476190476190476) internal successors, (136), 21 states have internal predecessors, (136), 9 states have call successors, (28), 6 states have call predecessors, (28), 8 states have return successors, (32), 10 states have call predecessors, (32), 9 states have call successors, (32) Word has length 122 [2023-12-02 17:35:38,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:35:38,522 INFO L225 Difference]: With dead ends: 1788 [2023-12-02 17:35:38,522 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 17:35:38,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 441 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4011 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=961, Invalid=12149, Unknown=0, NotChecked=0, Total=13110 [2023-12-02 17:35:38,532 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 379 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 1637 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 1909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 1637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 17:35:38,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 490 Invalid, 1909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 1637 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 17:35:38,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 17:35:38,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 17:35:38,533 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 17:35:38,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 17:35:38,533 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 122 [2023-12-02 17:35:38,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:35:38,533 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 17:35:38,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 6.476190476190476) internal successors, (136), 21 states have internal predecessors, (136), 9 states have call successors, (28), 6 states have call predecessors, (28), 8 states have return successors, (32), 10 states have call predecessors, (32), 9 states have call successors, (32) [2023-12-02 17:35:38,534 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 17:35:38,534 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 17:35:38,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 17:35:38,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b94d5d-feee-4dc5-a528-aa2101999fb9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 17:35:38,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b94d5d-feee-4dc5-a528-aa2101999fb9/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-02 17:35:38,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-02 17:35:44,238 INFO L899 garLoopResultBuilder]: For program point deactivatePumpEXIT(lines 278 285) no Hoare annotation was computed. [2023-12-02 17:35:44,238 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 278 285) the Hoare annotation is: (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (and (not (= ~waterLevel~0 1)) (<= ~waterLevel~0 1)) (= |old(~pumpRunning~0)| 0) (= 0 ~systemActive~0)) [2023-12-02 17:35:44,238 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 168 174) no Hoare annotation was computed. [2023-12-02 17:35:44,238 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 168 174) the Hoare annotation is: true [2023-12-02 17:35:44,238 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 942 953) the Hoare annotation is: (let ((.cse2 (= |old(~methaneLevelCritical~0)| 0)) (.cse6 (= ~methaneLevelCritical~0 0))) (let ((.cse3 (not .cse6)) (.cse7 (< ~waterLevel~0 2)) (.cse0 (not (= ~waterLevel~0 1))) (.cse5 (not .cse2)) (.cse1 (not (= ~pumpRunning~0 0))) (.cse4 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse5 .cse6 .cse7 .cse4) (or .cse2 .cse3 .cse7 .cse4) (or .cse0 .cse5 .cse1 .cse6 .cse4)))) [2023-12-02 17:35:44,238 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 942 953) no Hoare annotation was computed. [2023-12-02 17:35:44,238 INFO L899 garLoopResultBuilder]: For program point L480(lines 455 484) no Hoare annotation was computed. [2023-12-02 17:35:44,238 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 455 484) no Hoare annotation was computed. [2023-12-02 17:35:44,239 INFO L899 garLoopResultBuilder]: For program point L476(line 476) no Hoare annotation was computed. [2023-12-02 17:35:44,239 INFO L899 garLoopResultBuilder]: For program point L469(lines 469 473) no Hoare annotation was computed. [2023-12-02 17:35:44,239 INFO L902 garLoopResultBuilder]: At program point L469-1(lines 469 473) the Hoare annotation is: true [2023-12-02 17:35:44,239 INFO L902 garLoopResultBuilder]: At program point L465-2(lines 465 479) the Hoare annotation is: true [2023-12-02 17:35:44,239 INFO L902 garLoopResultBuilder]: At program point L461(line 461) the Hoare annotation is: true [2023-12-02 17:35:44,239 INFO L899 garLoopResultBuilder]: For program point L461-1(line 461) no Hoare annotation was computed. [2023-12-02 17:35:44,239 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 455 484) the Hoare annotation is: true [2023-12-02 17:35:44,239 INFO L899 garLoopResultBuilder]: For program point L155-1(lines 155 161) no Hoare annotation was computed. [2023-12-02 17:35:44,239 INFO L895 garLoopResultBuilder]: At program point L242(line 242) the Hoare annotation is: (let ((.cse0 (< |old(~waterLevel~0)| 2)) (.cse1 (= 0 ~systemActive~0))) (and (or (= ~methaneLevelCritical~0 0) .cse0 .cse1) (or (not (= |old(~pumpRunning~0)| 0)) (and (not (= |old(~waterLevel~0)| 1)) (<= |old(~waterLevel~0)| 1)) .cse1) (or .cse0 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (= |timeShift_processEnvironment_~tmp~3#1| 0)) .cse1))) [2023-12-02 17:35:44,239 INFO L895 garLoopResultBuilder]: At program point L238(line 238) the Hoare annotation is: (let ((.cse0 (< |old(~waterLevel~0)| 2)) (.cse1 (= 0 ~systemActive~0))) (and (or .cse0 (not (= ~methaneLevelCritical~0 0)) .cse1) (or .cse0 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (= |timeShift_processEnvironment_~tmp~3#1| ~methaneLevelCritical~0)) .cse1) (or (not (= |old(~pumpRunning~0)| 0)) (and (not (= |old(~waterLevel~0)| 1)) (<= |old(~waterLevel~0)| 1)) .cse1))) [2023-12-02 17:35:44,240 INFO L895 garLoopResultBuilder]: At program point L234(line 234) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= |old(~waterLevel~0)| (+ ~waterLevel~0 1))) (< |old(~waterLevel~0)| 2) .cse0) (or (not (= |old(~pumpRunning~0)| 0)) (and (not (= |old(~waterLevel~0)| 1)) (<= |old(~waterLevel~0)| 1)) .cse0))) [2023-12-02 17:35:44,240 INFO L899 garLoopResultBuilder]: For program point L234-1(line 234) no Hoare annotation was computed. [2023-12-02 17:35:44,240 INFO L895 garLoopResultBuilder]: At program point L247(line 247) the Hoare annotation is: (let ((.cse1 (= |old(~pumpRunning~0)| 0)) (.cse0 (= ~pumpRunning~0 0)) (.cse2 (= 0 ~systemActive~0))) (and (or (< |old(~waterLevel~0)| 2) (and .cse0 .cse1 (= |old(~waterLevel~0)| ~waterLevel~0)) .cse2) (or (not .cse1) (not (= |old(~waterLevel~0)| 1)) (and .cse0 (= ~waterLevel~0 1)) .cse2))) [2023-12-02 17:35:44,240 INFO L899 garLoopResultBuilder]: For program point L247-1(lines 228 252) no Hoare annotation was computed. [2023-12-02 17:35:44,240 INFO L899 garLoopResultBuilder]: For program point L148-1(lines 147 166) no Hoare annotation was computed. [2023-12-02 17:35:44,240 INFO L899 garLoopResultBuilder]: For program point L54(line 54) no Hoare annotation was computed. [2023-12-02 17:35:44,240 INFO L899 garLoopResultBuilder]: For program point L236(lines 236 244) no Hoare annotation was computed. [2023-12-02 17:35:44,240 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 144 167) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (< |old(~waterLevel~0)| 2) (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= |old(~waterLevel~0)| ~waterLevel~0)) .cse0) (or (not (= |old(~pumpRunning~0)| 0)) (not (= |old(~waterLevel~0)| 1)) (and (= ~pumpRunning~0 0) (= ~waterLevel~0 1)) .cse0))) [2023-12-02 17:35:44,240 INFO L899 garLoopResultBuilder]: For program point L232(lines 232 249) no Hoare annotation was computed. [2023-12-02 17:35:44,240 INFO L899 garLoopResultBuilder]: For program point L402(lines 402 408) no Hoare annotation was computed. [2023-12-02 17:35:44,241 INFO L899 garLoopResultBuilder]: For program point L398(lines 398 411) no Hoare annotation was computed. [2023-12-02 17:35:44,241 INFO L899 garLoopResultBuilder]: For program point L398-1(lines 390 414) no Hoare annotation was computed. [2023-12-02 17:35:44,241 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 144 167) no Hoare annotation was computed. [2023-12-02 17:35:44,241 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 54) no Hoare annotation was computed. [2023-12-02 17:35:44,241 INFO L895 garLoopResultBuilder]: At program point L122(lines 73 123) the Hoare annotation is: false [2023-12-02 17:35:44,241 INFO L899 garLoopResultBuilder]: For program point L94(lines 94 100) no Hoare annotation was computed. [2023-12-02 17:35:44,241 INFO L899 garLoopResultBuilder]: For program point L94-1(lines 94 100) no Hoare annotation was computed. [2023-12-02 17:35:44,241 INFO L899 garLoopResultBuilder]: For program point L536(lines 536 543) no Hoare annotation was computed. [2023-12-02 17:35:44,242 INFO L895 garLoopResultBuilder]: At program point L119(lines 74 121) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_test_~tmp___0~0#1| 2147483647)) (.cse7 (= ~pumpRunning~0 0)) (.cse1 (<= 0 (+ |ULTIMATE.start_test_~tmp___0~0#1| 2147483648))) (.cse2 (= 1 ~systemActive~0)) (.cse3 (= |ULTIMATE.start_main_~tmp~8#1| 1)) (.cse4 (<= 0 (+ |ULTIMATE.start_test_~tmp~0#1| 2147483648))) (.cse5 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse8 (= ~waterLevel~0 1)) (.cse6 (<= |ULTIMATE.start_test_~tmp~0#1| 2147483647))) (or (and .cse0 .cse1 (<= 2 ~waterLevel~0) .cse2 .cse3 .cse4 .cse5 .cse6) (let ((.cse9 (select |#memory_int| 1))) (and (= (select |#length| 15) 25) (= 9 (select |#length| 5)) (= (select |#length| 9) 21) (= 30 (select |#length| 7)) (= 1 (select |#valid| 5)) (= (select |#length| 3) 12) (= (select |#valid| 15) 1) (<= 1 |#StackHeapBarrier|) .cse7 (= (select |#valid| 9) 1) (= (select |#length| 12) 25) (= (select |#valid| 11) 1) (= ~methaneLevelCritical~0 0) (= |ULTIMATE.start_valid_product_#res#1| 1) (= 30 (select |#length| 4)) (= 31 (select |#length| 2)) (= ~head~0.offset 0) (= 2 (select |#length| 1)) (= (select |#length| 8) 9) (= (select |#valid| 3) 1) (= (select |#valid| 7) 1) (= 30 (select |#length| 13)) .cse2 (= 30 (select |#length| 10)) .cse3 (= (select |#valid| 12) 1) .cse5 (= (select |#valid| 4) 1) (= (select |#valid| 1) 1) (= (select |#length| 6) 21) (= (select |#valid| 14) 1) (= 9 (select |#length| 14)) (= (select |#valid| 0) 0) (= ~head~0.base 0) (= (select |#valid| 2) 1) (= 9 (select |#length| 11)) .cse8 (= (select .cse9 0) 48) (= (select |#valid| 6) 1) (= (select .cse9 1) 0) (= (select |#valid| 10) 1) (= (select |#valid| 8) 1) (= (select |#valid| 13) 1) (= ~cleanupTimeShifts~0 4))) (and .cse0 .cse7 .cse1 .cse2 .cse3 .cse4 .cse5 .cse8 .cse6))) [2023-12-02 17:35:44,242 INFO L895 garLoopResultBuilder]: At program point L86(line 86) the Hoare annotation is: (let ((.cse8 (<= |ULTIMATE.start_test_~tmp___0~0#1| 2147483647)) (.cse0 (= ~pumpRunning~0 0)) (.cse9 (<= 0 (+ |ULTIMATE.start_test_~tmp___0~0#1| 2147483648))) (.cse1 (= 1 ~systemActive~0)) (.cse2 (= |ULTIMATE.start_main_~tmp~8#1| 1)) (.cse3 (<= 0 (+ |ULTIMATE.start_test_~tmp~0#1| 2147483648))) (.cse4 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse5 (= ~waterLevel~0 1)) (.cse7 (<= |ULTIMATE.start_test_~tmp~0#1| 2147483647))) (or (let ((.cse6 (select |#memory_int| 1))) (and (= (select |#length| 15) 25) (= 9 (select |#length| 5)) (= (select |#length| 9) 21) (= 30 (select |#length| 7)) (= 1 (select |#valid| 5)) (= (select |#length| 3) 12) (= (select |#valid| 15) 1) (<= 1 |#StackHeapBarrier|) .cse0 (= (select |#valid| 9) 1) (= (select |#length| 12) 25) (= (select |#valid| 11) 1) (= ~methaneLevelCritical~0 0) (= |ULTIMATE.start_valid_product_#res#1| 1) (= 30 (select |#length| 4)) (= 31 (select |#length| 2)) (= ~head~0.offset 0) (not (= |ULTIMATE.start_test_~tmp~0#1| 0)) (= 2 (select |#length| 1)) (= (select |#length| 8) 9) (= (select |#valid| 3) 1) (= (select |#valid| 7) 1) (= 30 (select |#length| 13)) .cse1 (= 30 (select |#length| 10)) .cse2 (= (select |#valid| 12) 1) .cse3 .cse4 (= (select |#valid| 4) 1) (= (select |#valid| 1) 1) (= (select |#length| 6) 21) (= (select |#valid| 14) 1) (= 9 (select |#length| 14)) (= (select |#valid| 0) 0) (= ~head~0.base 0) (= (select |#valid| 2) 1) (= 9 (select |#length| 11)) .cse5 (= (select .cse6 0) 48) (= (select |#valid| 6) 1) (= (select .cse6 1) 0) .cse7 (= (select |#valid| 10) 1) (= (select |#valid| 8) 1) (= (select |#valid| 13) 1) (= ~cleanupTimeShifts~0 4))) (and .cse8 .cse9 (<= 2 ~waterLevel~0) .cse1 .cse2 .cse3 .cse4 .cse7) (and .cse8 .cse0 .cse9 .cse1 .cse2 .cse3 .cse4 .cse5 .cse7))) [2023-12-02 17:35:44,242 INFO L899 garLoopResultBuilder]: For program point L536-2(lines 536 543) no Hoare annotation was computed. [2023-12-02 17:35:44,242 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-02 17:35:44,242 INFO L895 garLoopResultBuilder]: At program point L112-2(lines 104 117) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_test_~tmp___0~0#1| 2147483647)) (.cse1 (<= 0 (+ |ULTIMATE.start_test_~tmp___0~0#1| 2147483648))) (.cse2 (= 1 ~systemActive~0)) (.cse3 (= |ULTIMATE.start_main_~tmp~8#1| 1)) (.cse4 (<= 0 (+ |ULTIMATE.start_test_~tmp~0#1| 2147483648))) (.cse5 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse6 (<= |ULTIMATE.start_test_~tmp~0#1| 2147483647))) (or (and .cse0 .cse1 (<= 2 ~waterLevel~0) .cse2 .cse3 .cse4 .cse5 .cse6) (and .cse0 (= ~pumpRunning~0 0) .cse1 .cse2 .cse3 .cse4 .cse5 (= ~waterLevel~0 1) .cse6))) [2023-12-02 17:35:44,243 INFO L899 garLoopResultBuilder]: For program point L75(lines 74 121) no Hoare annotation was computed. [2023-12-02 17:35:44,243 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-02 17:35:44,243 INFO L895 garLoopResultBuilder]: At program point L96(line 96) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_test_~tmp___0~0#1| 2147483647)) (.cse1 (<= 0 (+ |ULTIMATE.start_test_~tmp___0~0#1| 2147483648))) (.cse2 (= 1 ~systemActive~0)) (.cse3 (= |ULTIMATE.start_main_~tmp~8#1| 1)) (.cse4 (<= 0 (+ |ULTIMATE.start_test_~tmp~0#1| 2147483648))) (.cse5 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse6 (<= |ULTIMATE.start_test_~tmp~0#1| 2147483647))) (or (and .cse0 .cse1 (<= 2 ~waterLevel~0) .cse2 .cse3 .cse4 .cse5 .cse6) (and .cse0 (= ~pumpRunning~0 0) .cse1 .cse2 .cse3 .cse4 .cse5 (= ~waterLevel~0 1) .cse6))) [2023-12-02 17:35:44,243 INFO L899 garLoopResultBuilder]: For program point L125(lines 64 129) no Hoare annotation was computed. [2023-12-02 17:35:44,243 INFO L899 garLoopResultBuilder]: For program point L84(lines 84 90) no Hoare annotation was computed. [2023-12-02 17:35:44,243 INFO L899 garLoopResultBuilder]: For program point L84-1(lines 84 90) no Hoare annotation was computed. [2023-12-02 17:35:44,243 INFO L895 garLoopResultBuilder]: At program point L190(line 190) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= 0 ~systemActive~0))) (and (or .cse0 (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_isHighWaterLevel_#res#1| 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~1#1| 0) (= |processEnvironment__wrappee__highWaterSensor_isHighWaterSensorDry_#res#1| 1)) .cse1) (or .cse0 (< ~waterLevel~0 2) .cse1))) [2023-12-02 17:35:44,243 INFO L899 garLoopResultBuilder]: For program point L184(lines 184 192) no Hoare annotation was computed. [2023-12-02 17:35:44,243 INFO L899 garLoopResultBuilder]: For program point L180(lines 180 197) no Hoare annotation was computed. [2023-12-02 17:35:44,243 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 176 200) the Hoare annotation is: (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) (= 0 ~systemActive~0)) [2023-12-02 17:35:44,243 INFO L895 garLoopResultBuilder]: At program point L195(line 195) the Hoare annotation is: (or (not (= |old(~pumpRunning~0)| 0)) (= 0 ~systemActive~0)) [2023-12-02 17:35:44,244 INFO L899 garLoopResultBuilder]: For program point L195-1(lines 176 200) no Hoare annotation was computed. [2023-12-02 17:35:44,244 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 176 200) no Hoare annotation was computed. [2023-12-02 17:35:44,244 INFO L895 garLoopResultBuilder]: At program point L266(line 266) the Hoare annotation is: (or (not (= |old(~pumpRunning~0)| 0)) (and (= ~pumpRunning~0 0) (<= 2 ~waterLevel~0) (= |processEnvironment__wrappee__highWaterSensor_isHighWaterLevel_#res#1| 1) (= |processEnvironment__wrappee__highWaterSensor_~tmp~1#1| 1) (= |processEnvironment__wrappee__highWaterSensor_isHighWaterSensorDry_#res#1| 0)) (= 0 ~systemActive~0)) [2023-12-02 17:35:44,244 INFO L899 garLoopResultBuilder]: For program point L266-1(line 266) no Hoare annotation was computed. [2023-12-02 17:35:44,244 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 930 941) no Hoare annotation was computed. [2023-12-02 17:35:44,244 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 930 941) the Hoare annotation is: (let ((.cse0 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse1 (= 0 ~systemActive~0))) (and (or (not (= ~pumpRunning~0 0)) (not (= |old(~waterLevel~0)| 1)) .cse0 .cse1) (or (< |old(~waterLevel~0)| 2) .cse0 .cse1))) [2023-12-02 17:35:44,244 INFO L895 garLoopResultBuilder]: At program point L221(line 221) the Hoare annotation is: (let ((.cse0 (= |old(~pumpRunning~0)| 0)) (.cse1 (= 0 ~systemActive~0))) (and (or (and (not (= ~waterLevel~0 1)) (<= ~waterLevel~0 1)) .cse0 (not (= ~methaneLevelCritical~0 0)) .cse1) (or (not .cse0) (= ~pumpRunning~0 0) .cse1))) [2023-12-02 17:35:44,244 INFO L899 garLoopResultBuilder]: For program point L221-1(lines 202 226) no Hoare annotation was computed. [2023-12-02 17:35:44,244 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 202 226) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (and (not (= ~waterLevel~0 1)) (<= ~waterLevel~0 1)) (not (= ~methaneLevelCritical~0 0)) .cse0) (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) .cse0))) [2023-12-02 17:35:44,244 INFO L895 garLoopResultBuilder]: At program point L216(line 216) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (not (= |old(~pumpRunning~0)| 0)) .cse0) (or (and (not (= ~waterLevel~0 1)) (<= ~waterLevel~0 1)) (not (= ~methaneLevelCritical~0 0)) .cse0))) [2023-12-02 17:35:44,245 INFO L895 garLoopResultBuilder]: At program point L212(line 212) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (not (= |old(~pumpRunning~0)| 0)) .cse0) (or (and (not (= ~waterLevel~0 1)) (<= ~waterLevel~0 1)) (not (= ~methaneLevelCritical~0 0)) (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= |processEnvironment__wrappee__methaneQuery_~tmp~2#1| 1)) .cse0))) [2023-12-02 17:35:44,245 INFO L899 garLoopResultBuilder]: For program point L210(lines 210 218) no Hoare annotation was computed. [2023-12-02 17:35:44,245 INFO L899 garLoopResultBuilder]: For program point L206(lines 206 223) no Hoare annotation was computed. [2023-12-02 17:35:44,245 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__methaneQueryEXIT(lines 202 226) no Hoare annotation was computed. [2023-12-02 17:35:44,245 INFO L899 garLoopResultBuilder]: For program point isMethaneAlarmEXIT(lines 286 296) no Hoare annotation was computed. [2023-12-02 17:35:44,245 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 286 296) the Hoare annotation is: true [2023-12-02 17:35:44,247 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:35:44,249 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 17:35:44,259 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[15] could not be translated [2023-12-02 17:35:44,259 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[5] could not be translated [2023-12-02 17:35:44,259 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[9] could not be translated [2023-12-02 17:35:44,259 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[7] could not be translated [2023-12-02 17:35:44,260 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[5] could not be translated [2023-12-02 17:35:44,260 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated [2023-12-02 17:35:44,260 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[15] could not be translated [2023-12-02 17:35:44,260 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[9] could not be translated [2023-12-02 17:35:44,260 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[12] could not be translated [2023-12-02 17:35:44,260 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[11] could not be translated [2023-12-02 17:35:44,261 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[4] could not be translated [2023-12-02 17:35:44,261 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated [2023-12-02 17:35:44,261 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated [2023-12-02 17:35:44,261 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[8] could not be translated [2023-12-02 17:35:44,261 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated [2023-12-02 17:35:44,261 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[7] could not be translated [2023-12-02 17:35:44,262 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[13] could not be translated [2023-12-02 17:35:44,262 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[10] could not be translated [2023-12-02 17:35:44,262 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[12] could not be translated [2023-12-02 17:35:44,262 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[4] could not be translated [2023-12-02 17:35:44,262 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated [2023-12-02 17:35:44,262 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[6] could not be translated [2023-12-02 17:35:44,262 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[14] could not be translated [2023-12-02 17:35:44,263 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[14] could not be translated [2023-12-02 17:35:44,263 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated [2023-12-02 17:35:44,263 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated [2023-12-02 17:35:44,263 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #length[11] could not be translated [2023-12-02 17:35:44,263 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated [2023-12-02 17:35:44,263 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[6] could not be translated [2023-12-02 17:35:44,263 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated [2023-12-02 17:35:44,263 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[10] could not be translated [2023-12-02 17:35:44,264 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[8] could not be translated [2023-12-02 17:35:44,264 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: ArrayAccessExpression #valid[13] could not be translated [2023-12-02 17:35:44,266 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 05:35:44 BoogieIcfgContainer [2023-12-02 17:35:44,266 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 17:35:44,266 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 17:35:44,266 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 17:35:44,266 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 17:35:44,267 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:34:47" (3/4) ... [2023-12-02 17:35:44,268 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 17:35:44,270 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2023-12-02 17:35:44,270 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2023-12-02 17:35:44,270 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2023-12-02 17:35:44,271 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2023-12-02 17:35:44,271 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2023-12-02 17:35:44,271 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2023-12-02 17:35:44,271 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2023-12-02 17:35:44,271 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__methaneQuery [2023-12-02 17:35:44,271 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneAlarm [2023-12-02 17:35:44,278 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 50 nodes and edges [2023-12-02 17:35:44,279 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-12-02 17:35:44,279 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-12-02 17:35:44,280 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 17:35:44,280 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 17:35:44,299 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((tmp___0 <= 2147483647) && (0 <= (tmp___0 + 2147483648))) && (2 <= waterLevel)) && (1 == systemActive)) && (tmp == 1)) && (0 <= (tmp + 2147483648))) && (splverifierCounter == 0)) && (tmp <= 2147483647)) || ((((((((pumpRunning == 0) && (methaneLevelCritical == 0)) && (\result == 1)) && (1 == systemActive)) && (tmp == 1)) && (splverifierCounter == 0)) && (waterLevel == 1)) && (cleanupTimeShifts == 4))) || (((((((((tmp___0 <= 2147483647) && (pumpRunning == 0)) && (0 <= (tmp___0 + 2147483648))) && (1 == systemActive)) && (tmp == 1)) && (0 <= (tmp + 2147483648))) && (splverifierCounter == 0)) && (waterLevel == 1)) && (tmp <= 2147483647))) [2023-12-02 17:35:44,300 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((\old(waterLevel) < 2) || ((pumpRunning == \old(pumpRunning)) && (\old(waterLevel) == waterLevel))) || (0 == systemActive)) && (((!((\old(pumpRunning) == 0)) || !((\old(waterLevel) == 1))) || ((pumpRunning == 0) && (waterLevel == 1))) || (0 == systemActive))) [2023-12-02 17:35:44,330 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((tmp___0 <= 2147483647) && (0 <= (tmp___0 + 2147483648))) && (2 <= waterLevel)) && (1 == systemActive)) && (tmp == 1)) && (0 <= (tmp + 2147483648))) && (splverifierCounter == 0)) && (tmp <= 2147483647)) || ((((((((pumpRunning == 0) && (methaneLevelCritical == 0)) && (\result == 1)) && (1 == systemActive)) && (tmp == 1)) && (splverifierCounter == 0)) && (waterLevel == 1)) && (cleanupTimeShifts == 4))) || (((((((((tmp___0 <= 2147483647) && (pumpRunning == 0)) && (0 <= (tmp___0 + 2147483648))) && (1 == systemActive)) && (tmp == 1)) && (0 <= (tmp + 2147483648))) && (splverifierCounter == 0)) && (waterLevel == 1)) && (tmp <= 2147483647))) [2023-12-02 17:35:44,332 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((\old(waterLevel) < 2) || ((pumpRunning == \old(pumpRunning)) && (\old(waterLevel) == waterLevel))) || (0 == systemActive)) && (((!((\old(pumpRunning) == 0)) || !((\old(waterLevel) == 1))) || ((pumpRunning == 0) && (waterLevel == 1))) || (0 == systemActive))) [2023-12-02 17:35:44,377 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b94d5d-feee-4dc5-a528-aa2101999fb9/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 17:35:44,378 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b94d5d-feee-4dc5-a528-aa2101999fb9/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 17:35:44,378 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 17:35:44,379 INFO L158 Benchmark]: Toolchain (without parser) took 58251.87ms. Allocated memory was 153.1MB in the beginning and 1.1GB in the end (delta: 973.1MB). Free memory was 111.6MB in the beginning and 1.0GB in the end (delta: -891.3MB). Peak memory consumption was 83.6MB. Max. memory is 16.1GB. [2023-12-02 17:35:44,379 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 96.5MB. Free memory is still 49.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 17:35:44,379 INFO L158 Benchmark]: CACSL2BoogieTranslator took 411.93ms. Allocated memory is still 153.1MB. Free memory was 111.6MB in the beginning and 91.8MB in the end (delta: 19.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 17:35:44,380 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.95ms. Allocated memory is still 153.1MB. Free memory was 91.8MB in the beginning and 89.1MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 17:35:44,380 INFO L158 Benchmark]: Boogie Preprocessor took 25.37ms. Allocated memory is still 153.1MB. Free memory was 89.1MB in the beginning and 87.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 17:35:44,380 INFO L158 Benchmark]: RCFGBuilder took 533.34ms. Allocated memory is still 153.1MB. Free memory was 87.7MB in the beginning and 115.1MB in the end (delta: -27.5MB). Peak memory consumption was 26.8MB. Max. memory is 16.1GB. [2023-12-02 17:35:44,381 INFO L158 Benchmark]: TraceAbstraction took 57113.55ms. Allocated memory was 153.1MB in the beginning and 1.1GB in the end (delta: 973.1MB). Free memory was 114.3MB in the beginning and 1.0GB in the end (delta: -895.9MB). Peak memory consumption was 679.7MB. Max. memory is 16.1GB. [2023-12-02 17:35:44,381 INFO L158 Benchmark]: Witness Printer took 111.89ms. Allocated memory is still 1.1GB. Free memory was 1.0GB in the beginning and 1.0GB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-12-02 17:35:44,383 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 96.5MB. Free memory is still 49.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 411.93ms. Allocated memory is still 153.1MB. Free memory was 111.6MB in the beginning and 91.8MB in the end (delta: 19.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.95ms. Allocated memory is still 153.1MB. Free memory was 91.8MB in the beginning and 89.1MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.37ms. Allocated memory is still 153.1MB. Free memory was 89.1MB in the beginning and 87.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 533.34ms. Allocated memory is still 153.1MB. Free memory was 87.7MB in the beginning and 115.1MB in the end (delta: -27.5MB). Peak memory consumption was 26.8MB. Max. memory is 16.1GB. * TraceAbstraction took 57113.55ms. Allocated memory was 153.1MB in the beginning and 1.1GB in the end (delta: 973.1MB). Free memory was 114.3MB in the beginning and 1.0GB in the end (delta: -895.9MB). Peak memory consumption was 679.7MB. Max. memory is 16.1GB. * Witness Printer took 111.89ms. Allocated memory is still 1.1GB. Free memory was 1.0GB in the beginning and 1.0GB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 49]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [49] - GenericResultAtLocation [Line: 58]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [58] - GenericResultAtLocation [Line: 130]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [130] - GenericResultAtLocation [Line: 388]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification4_spec.i","") [388] - GenericResultAtLocation [Line: 415]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [415] - GenericResultAtLocation [Line: 453]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [453] - GenericResultAtLocation [Line: 549]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [549] - GenericResultAtLocation [Line: 915]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [915] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[15] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[5] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[9] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[7] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[5] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[15] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[9] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[12] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[11] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[4] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[8] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[3] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[7] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[13] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[10] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[12] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[4] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[6] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[14] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[14] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[2] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #length[11] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][0] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[6] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #memory_int[1][1] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[10] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[8] could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: ArrayAccessExpression #valid[13] could not be translated * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 54]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 57.0s, OverallIterations: 12, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 13.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 5.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2355 SdHoareTripleChecker+Valid, 4.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2307 mSDsluCounter, 2911 SdHoareTripleChecker+Invalid, 4.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2211 mSDsCounter, 1392 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6131 IncrementalHoareTripleChecker+Invalid, 7523 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1392 mSolverCounterUnsat, 700 mSDtfsCounter, 6131 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1305 GetRequests, 927 SyntacticMatches, 1 SemanticMatches, 377 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13254 ImplicationChecksByTransitivity, 17.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=741occurred in iteration=11, InterpolantAutomatonStates: 239, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 12 MinimizatonAttempts, 209 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 27 LocationsWithAnnotation, 1455 PreInvPairs, 1557 NumberOfFragments, 1176 HoareAnnotationTreeSize, 1455 FomulaSimplifications, 24701 FormulaSimplificationTreeSizeReduction, 1.3s HoareSimplificationTime, 27 FomulaSimplificationsInter, 25107 FormulaSimplificationTreeSizeReductionInter, 4.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 1021 NumberOfCodeBlocks, 988 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 1326 ConstructedInterpolants, 0 QuantifiedInterpolants, 3585 SizeOfPredicates, 38 NumberOfNonLiveVariables, 1517 ConjunctsInSsa, 109 ConjunctsInUnsatCore, 21 InterpolantComputations, 9 PerfectInterpolantSequences, 685/790 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: OVERALL_TIME: 8.1s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 6, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 52, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 64, TOOLS_POST_TIME: 3.4s, TOOLS_POST_CALL_APPLICATIONS: 31, TOOLS_POST_CALL_TIME: 1.8s, TOOLS_POST_RETURN_APPLICATIONS: 26, TOOLS_POST_RETURN_TIME: 1.8s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 121, TOOLS_QUANTIFIERELIM_TIME: 6.9s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.7s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 153, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 33, DOMAIN_JOIN_TIME: 1.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 52, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 5.8s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 5.8s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 26, CALL_SUMMARIZER_CACHE_MISSES: 5, CALL_SUMMARIZER_OVERALL_TIME: 0.2s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.2s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 510, DAG_COMPRESSION_RETAINED_NODES: 128, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 74]: Loop Invariant Derived loop invariant: ((((((((((tmp___0 <= 2147483647) && (0 <= (tmp___0 + 2147483648))) && (2 <= waterLevel)) && (1 == systemActive)) && (tmp == 1)) && (0 <= (tmp + 2147483648))) && (splverifierCounter == 0)) && (tmp <= 2147483647)) || ((((((((pumpRunning == 0) && (methaneLevelCritical == 0)) && (\result == 1)) && (1 == systemActive)) && (tmp == 1)) && (splverifierCounter == 0)) && (waterLevel == 1)) && (cleanupTimeShifts == 4))) || (((((((((tmp___0 <= 2147483647) && (pumpRunning == 0)) && (0 <= (tmp___0 + 2147483648))) && (1 == systemActive)) && (tmp == 1)) && (0 <= (tmp + 2147483648))) && (splverifierCounter == 0)) && (waterLevel == 1)) && (tmp <= 2147483647))) - InvariantResult [Line: 286]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 465]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 73]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 144]: Loop Invariant Derived loop invariant: ((((\old(waterLevel) < 2) || ((pumpRunning == \old(pumpRunning)) && (\old(waterLevel) == waterLevel))) || (0 == systemActive)) && (((!((\old(pumpRunning) == 0)) || !((\old(waterLevel) == 1))) || ((pumpRunning == 0) && (waterLevel == 1))) || (0 == systemActive))) RESULT: Ultimate proved your program to be correct! [2023-12-02 17:35:44,405 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0b94d5d-feee-4dc5-a528-aa2101999fb9/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