./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product38.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_d1b3a478-c833-4fb9-8186-6ef43d1115ed/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b3a478-c833-4fb9-8186-6ef43d1115ed/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_d1b3a478-c833-4fb9-8186-6ef43d1115ed/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b3a478-c833-4fb9-8186-6ef43d1115ed/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product38.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b3a478-c833-4fb9-8186-6ef43d1115ed/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_d1b3a478-c833-4fb9-8186-6ef43d1115ed/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 c8e3613a57f37f194f1fe75086d0eb5e0d997c2a9b69c99903e0a1a10a2db5eb --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:44:14,975 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:44:15,043 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b3a478-c833-4fb9-8186-6ef43d1115ed/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 13:44:15,047 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:44:15,047 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:44:15,070 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:44:15,070 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:44:15,071 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:44:15,072 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:44:15,072 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:44:15,073 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:44:15,073 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:44:15,074 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:44:15,074 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 13:44:15,075 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:44:15,075 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:44:15,076 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 13:44:15,076 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 13:44:15,077 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:44:15,077 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 13:44:15,078 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 13:44:15,078 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 13:44:15,079 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:44:15,080 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 13:44:15,080 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 13:44:15,080 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 13:44:15,081 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 13:44:15,081 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:44:15,082 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 13:44:15,082 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:44:15,083 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 13:44:15,083 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 13:44:15,083 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 13:44:15,084 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:44:15,084 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:44:15,084 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:44:15,085 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:44:15,085 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:44:15,085 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:44:15,085 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:44:15,086 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 13:44:15,086 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 13:44:15,086 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 13:44:15,086 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:44:15,087 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 13:44:15,087 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:44:15,087 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:44:15,087 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_d1b3a478-c833-4fb9-8186-6ef43d1115ed/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b3a478-c833-4fb9-8186-6ef43d1115ed/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8e3613a57f37f194f1fe75086d0eb5e0d997c2a9b69c99903e0a1a10a2db5eb [2023-12-02 13:44:15,306 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:44:15,326 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:44:15,328 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:44:15,329 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:44:15,330 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:44:15,331 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b3a478-c833-4fb9-8186-6ef43d1115ed/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/product-lines/minepump_spec3_product38.cil.c [2023-12-02 13:44:18,085 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:44:18,290 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:44:18,291 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b3a478-c833-4fb9-8186-6ef43d1115ed/sv-benchmarks/c/product-lines/minepump_spec3_product38.cil.c [2023-12-02 13:44:18,304 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b3a478-c833-4fb9-8186-6ef43d1115ed/bin/utaipan-verify-nQ1chXbOIh/data/555d6629b/225bdf2bab5d4678b09eff1385057079/FLAGfc7f1a4a3 [2023-12-02 13:44:18,315 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b3a478-c833-4fb9-8186-6ef43d1115ed/bin/utaipan-verify-nQ1chXbOIh/data/555d6629b/225bdf2bab5d4678b09eff1385057079 [2023-12-02 13:44:18,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:44:18,320 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:44:18,321 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:44:18,321 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:44:18,326 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:44:18,327 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:44:18" (1/1) ... [2023-12-02 13:44:18,328 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a343488 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:44:18, skipping insertion in model container [2023-12-02 13:44:18,328 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:44:18" (1/1) ... [2023-12-02 13:44:18,372 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:44:18,598 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_d1b3a478-c833-4fb9-8186-6ef43d1115ed/sv-benchmarks/c/product-lines/minepump_spec3_product38.cil.c[15422,15435] [2023-12-02 13:44:18,614 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:44:18,625 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:44:18,636 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [49] [2023-12-02 13:44:18,637 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [87] [2023-12-02 13:44:18,638 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [159] [2023-12-02 13:44:18,638 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [354] [2023-12-02 13:44:18,638 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [720] [2023-12-02 13:44:18,638 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [729] [2023-12-02 13:44:18,639 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [825] [2023-12-02 13:44:18,639 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [920] [2023-12-02 13:44:18,685 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_d1b3a478-c833-4fb9-8186-6ef43d1115ed/sv-benchmarks/c/product-lines/minepump_spec3_product38.cil.c[15422,15435] [2023-12-02 13:44:18,692 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:44:18,711 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:44:18,712 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:44:18 WrapperNode [2023-12-02 13:44:18,712 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:44:18,713 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:44:18,713 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:44:18,713 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:44:18,721 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:44:18" (1/1) ... [2023-12-02 13:44:18,734 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:44:18" (1/1) ... [2023-12-02 13:44:18,759 INFO L138 Inliner]: procedures = 54, calls = 99, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 201 [2023-12-02 13:44:18,759 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:44:18,760 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:44:18,760 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:44:18,760 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:44:18,769 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:44:18" (1/1) ... [2023-12-02 13:44:18,770 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:44:18" (1/1) ... [2023-12-02 13:44:18,772 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:44:18" (1/1) ... [2023-12-02 13:44:18,772 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:44:18" (1/1) ... [2023-12-02 13:44:18,777 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:44:18" (1/1) ... [2023-12-02 13:44:18,781 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:44:18" (1/1) ... [2023-12-02 13:44:18,783 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:44:18" (1/1) ... [2023-12-02 13:44:18,784 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:44:18" (1/1) ... [2023-12-02 13:44:18,787 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:44:18,788 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:44:18,788 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:44:18,788 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:44:18,789 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:44:18" (1/1) ... [2023-12-02 13:44:18,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:44:18,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b3a478-c833-4fb9-8186-6ef43d1115ed/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:44:18,818 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b3a478-c833-4fb9-8186-6ef43d1115ed/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:44:18,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b3a478-c833-4fb9-8186-6ef43d1115ed/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:44:18,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:44:18,847 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-12-02 13:44:18,847 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-12-02 13:44:18,847 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-12-02 13:44:18,847 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-12-02 13:44:18,848 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-12-02 13:44:18,848 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-12-02 13:44:18,848 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-12-02 13:44:18,848 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-12-02 13:44:18,848 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-12-02 13:44:18,848 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-12-02 13:44:18,848 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-12-02 13:44:18,849 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-12-02 13:44:18,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 13:44:18,849 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-12-02 13:44:18,849 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-12-02 13:44:18,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:44:18,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:44:18,919 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:44:18,921 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:44:19,139 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:44:19,230 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:44:19,231 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 13:44:19,232 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:44:19 BoogieIcfgContainer [2023-12-02 13:44:19,233 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:44:19,235 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:44:19,235 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:44:19,238 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:44:19,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:44:18" (1/3) ... [2023-12-02 13:44:19,239 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d4821be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:44:19, skipping insertion in model container [2023-12-02 13:44:19,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:44:18" (2/3) ... [2023-12-02 13:44:19,239 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d4821be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:44:19, skipping insertion in model container [2023-12-02 13:44:19,240 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:44:19" (3/3) ... [2023-12-02 13:44:19,241 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product38.cil.c [2023-12-02 13:44:19,255 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:44:19,255 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 13:44:19,296 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:44:19,302 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;@57bf8b2c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:44:19,302 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 13:44:19,305 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 45 states have internal predecessors, (53), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 13:44:19,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 13:44:19,312 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:44:19,313 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:44:19,313 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:44:19,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:44:19,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1977299680, now seen corresponding path program 1 times [2023-12-02 13:44:19,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:44:19,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127005279] [2023-12-02 13:44:19,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:44:19,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:44:19,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:44:19,479 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 13:44:19,479 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:44:19,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127005279] [2023-12-02 13:44:19,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127005279] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:44:19,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:44:19,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:44:19,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539142625] [2023-12-02 13:44:19,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:44:19,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 13:44:19,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:44:19,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 13:44:19,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 13:44:19,513 INFO L87 Difference]: Start difference. First operand has 58 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 45 states have internal predecessors, (53), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:44:19,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:44:19,573 INFO L93 Difference]: Finished difference Result 114 states and 155 transitions. [2023-12-02 13:44:19,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 13:44:19,576 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-12-02 13:44:19,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:44:19,583 INFO L225 Difference]: With dead ends: 114 [2023-12-02 13:44:19,583 INFO L226 Difference]: Without dead ends: 53 [2023-12-02 13:44:19,586 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 13:44:19,590 INFO L413 NwaCegarLoop]: 56 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, 56 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 13:44:19,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 13:44:19,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-12-02 13:44:19,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2023-12-02 13:44:19,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 41 states have internal predecessors, (45), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 13:44:19,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2023-12-02 13:44:19,627 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 17 [2023-12-02 13:44:19,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:44:19,627 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2023-12-02 13:44:19,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:44:19,628 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2023-12-02 13:44:19,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 13:44:19,631 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:44:19,631 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:44:19,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 13:44:19,631 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:44:19,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:44:19,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1588984146, now seen corresponding path program 1 times [2023-12-02 13:44:19,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:44:19,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350571967] [2023-12-02 13:44:19,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:44:19,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:44:19,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:44:19,752 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 13:44:19,752 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:44:19,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350571967] [2023-12-02 13:44:19,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350571967] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:44:19,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:44:19,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:44:19,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495724183] [2023-12-02 13:44:19,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:44:19,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:44:19,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:44:19,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:44:19,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:44:19,756 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:44:19,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:44:19,796 INFO L93 Difference]: Finished difference Result 83 states and 107 transitions. [2023-12-02 13:44:19,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:44:19,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2023-12-02 13:44:19,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:44:19,798 INFO L225 Difference]: With dead ends: 83 [2023-12-02 13:44:19,798 INFO L226 Difference]: Without dead ends: 45 [2023-12-02 13:44:19,799 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 13:44:19,800 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 7 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 75 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 13:44:19,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 75 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 13:44:19,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-12-02 13:44:19,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-12-02 13:44:19,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 36 states have internal predecessors, (39), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 13:44:19,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2023-12-02 13:44:19,810 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 18 [2023-12-02 13:44:19,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:44:19,810 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2023-12-02 13:44:19,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:44:19,811 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2023-12-02 13:44:19,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-12-02 13:44:19,812 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:44:19,812 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:44:19,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 13:44:19,812 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:44:19,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:44:19,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1520409563, now seen corresponding path program 1 times [2023-12-02 13:44:19,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:44:19,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731984114] [2023-12-02 13:44:19,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:44:19,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:44:19,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:44:19,972 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 13:44:19,973 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:44:19,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731984114] [2023-12-02 13:44:19,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731984114] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:44:19,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:44:19,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 13:44:19,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228403050] [2023-12-02 13:44:19,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:44:19,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:44:19,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:44:19,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:44:19,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:44:19,976 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:44:20,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:44:20,050 INFO L93 Difference]: Finished difference Result 88 states and 113 transitions. [2023-12-02 13:44:20,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:44:20,051 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2023-12-02 13:44:20,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:44:20,052 INFO L225 Difference]: With dead ends: 88 [2023-12-02 13:44:20,052 INFO L226 Difference]: Without dead ends: 45 [2023-12-02 13:44:20,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 13:44:20,054 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 52 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:44:20,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 53 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:44:20,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-12-02 13:44:20,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2023-12-02 13:44:20,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 36 states have internal predecessors, (38), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 13:44:20,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2023-12-02 13:44:20,064 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 20 [2023-12-02 13:44:20,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:44:20,064 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2023-12-02 13:44:20,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:44:20,064 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2023-12-02 13:44:20,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-12-02 13:44:20,065 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:44:20,066 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:44:20,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 13:44:20,066 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:44:20,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:44:20,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1599190365, now seen corresponding path program 1 times [2023-12-02 13:44:20,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:44:20,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513497518] [2023-12-02 13:44:20,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:44:20,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:44:20,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:44:20,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 13:44:20,132 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:44:20,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513497518] [2023-12-02 13:44:20,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513497518] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:44:20,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:44:20,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:44:20,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354877183] [2023-12-02 13:44:20,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:44:20,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:44:20,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:44:20,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:44:20,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:44:20,135 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 13:44:20,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:44:20,192 INFO L93 Difference]: Finished difference Result 123 states and 156 transitions. [2023-12-02 13:44:20,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:44:20,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 27 [2023-12-02 13:44:20,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:44:20,195 INFO L225 Difference]: With dead ends: 123 [2023-12-02 13:44:20,195 INFO L226 Difference]: Without dead ends: 80 [2023-12-02 13:44:20,196 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 13:44:20,197 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 35 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:44:20,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 88 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 13:44:20,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-12-02 13:44:20,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 78. [2023-12-02 13:44:20,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 52 states have (on average 1.2692307692307692) internal successors, (66), 59 states have internal predecessors, (66), 13 states have call successors, (13), 12 states have call predecessors, (13), 12 states have return successors, (17), 13 states have call predecessors, (17), 13 states have call successors, (17) [2023-12-02 13:44:20,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 96 transitions. [2023-12-02 13:44:20,215 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 96 transitions. Word has length 27 [2023-12-02 13:44:20,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:44:20,215 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 96 transitions. [2023-12-02 13:44:20,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 13:44:20,216 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 96 transitions. [2023-12-02 13:44:20,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-12-02 13:44:20,217 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:44:20,217 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:44:20,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 13:44:20,217 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:44:20,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:44:20,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1902197692, now seen corresponding path program 1 times [2023-12-02 13:44:20,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:44:20,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544553001] [2023-12-02 13:44:20,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:44:20,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:44:20,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:44:20,295 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 13:44:20,295 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:44:20,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544553001] [2023-12-02 13:44:20,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544553001] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:44:20,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:44:20,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 13:44:20,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963102876] [2023-12-02 13:44:20,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:44:20,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:44:20,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:44:20,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:44:20,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:44:20,298 INFO L87 Difference]: Start difference. First operand 78 states and 96 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 13:44:20,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:44:20,377 INFO L93 Difference]: Finished difference Result 155 states and 194 transitions. [2023-12-02 13:44:20,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:44:20,380 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2023-12-02 13:44:20,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:44:20,382 INFO L225 Difference]: With dead ends: 155 [2023-12-02 13:44:20,382 INFO L226 Difference]: Without dead ends: 79 [2023-12-02 13:44:20,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:44:20,384 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 38 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:44:20,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 138 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:44:20,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-12-02 13:44:20,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 78. [2023-12-02 13:44:20,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 52 states have (on average 1.2115384615384615) internal successors, (63), 59 states have internal predecessors, (63), 13 states have call successors, (13), 12 states have call predecessors, (13), 12 states have return successors, (16), 13 states have call predecessors, (16), 13 states have call successors, (16) [2023-12-02 13:44:20,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 92 transitions. [2023-12-02 13:44:20,399 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 92 transitions. Word has length 28 [2023-12-02 13:44:20,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:44:20,399 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 92 transitions. [2023-12-02 13:44:20,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 13:44:20,400 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 92 transitions. [2023-12-02 13:44:20,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-02 13:44:20,401 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:44:20,401 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 13:44:20,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 13:44:20,402 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:44:20,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:44:20,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1727911802, now seen corresponding path program 1 times [2023-12-02 13:44:20,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:44:20,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240490414] [2023-12-02 13:44:20,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:44:20,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:44:20,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:44:20,558 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 13:44:20,558 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:44:20,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240490414] [2023-12-02 13:44:20,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240490414] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:44:20,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:44:20,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 13:44:20,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124548219] [2023-12-02 13:44:20,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:44:20,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 13:44:20,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:44:20,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 13:44:20,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:44:20,561 INFO L87 Difference]: Start difference. First operand 78 states and 92 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 13:44:20,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:44:20,701 INFO L93 Difference]: Finished difference Result 226 states and 274 transitions. [2023-12-02 13:44:20,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:44:20,704 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), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2023-12-02 13:44:20,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:44:20,707 INFO L225 Difference]: With dead ends: 226 [2023-12-02 13:44:20,707 INFO L226 Difference]: Without dead ends: 150 [2023-12-02 13:44:20,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-02 13:44:20,709 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 73 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:44:20,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 148 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:44:20,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-12-02 13:44:20,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 144. [2023-12-02 13:44:20,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 97 states have (on average 1.1958762886597938) internal successors, (116), 108 states have internal predecessors, (116), 24 states have call successors, (24), 22 states have call predecessors, (24), 22 states have return successors, (30), 24 states have call predecessors, (30), 24 states have call successors, (30) [2023-12-02 13:44:20,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 170 transitions. [2023-12-02 13:44:20,733 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 170 transitions. Word has length 31 [2023-12-02 13:44:20,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:44:20,734 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 170 transitions. [2023-12-02 13:44:20,734 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), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 13:44:20,734 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 170 transitions. [2023-12-02 13:44:20,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-12-02 13:44:20,736 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:44:20,736 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] [2023-12-02 13:44:20,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 13:44:20,737 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:44:20,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:44:20,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1308523125, now seen corresponding path program 1 times [2023-12-02 13:44:20,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:44:20,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342471805] [2023-12-02 13:44:20,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:44:20,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:44:20,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:44:20,927 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 13:44:20,928 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:44:20,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342471805] [2023-12-02 13:44:20,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342471805] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:44:20,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:44:20,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 13:44:20,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277982156] [2023-12-02 13:44:20,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:44:20,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 13:44:20,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:44:20,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 13:44:20,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-02 13:44:20,930 INFO L87 Difference]: Start difference. First operand 144 states and 170 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 13:44:21,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:44:21,133 INFO L93 Difference]: Finished difference Result 291 states and 352 transitions. [2023-12-02 13:44:21,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-02 13:44:21,134 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 34 [2023-12-02 13:44:21,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:44:21,136 INFO L225 Difference]: With dead ends: 291 [2023-12-02 13:44:21,137 INFO L226 Difference]: Without dead ends: 215 [2023-12-02 13:44:21,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-12-02 13:44:21,138 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 140 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:44:21,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 173 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:44:21,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2023-12-02 13:44:21,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 207. [2023-12-02 13:44:21,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 141 states have (on average 1.1914893617021276) internal successors, (168), 155 states have internal predecessors, (168), 34 states have call successors, (34), 31 states have call predecessors, (34), 31 states have return successors, (43), 33 states have call predecessors, (43), 34 states have call successors, (43) [2023-12-02 13:44:21,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 245 transitions. [2023-12-02 13:44:21,169 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 245 transitions. Word has length 34 [2023-12-02 13:44:21,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:44:21,169 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 245 transitions. [2023-12-02 13:44:21,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 13:44:21,170 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 245 transitions. [2023-12-02 13:44:21,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-02 13:44:21,172 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:44:21,172 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-12-02 13:44:21,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 13:44:21,173 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:44:21,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:44:21,173 INFO L85 PathProgramCache]: Analyzing trace with hash 293581659, now seen corresponding path program 1 times [2023-12-02 13:44:21,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:44:21,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695933412] [2023-12-02 13:44:21,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:44:21,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:44:21,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:44:21,322 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 13:44:21,322 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:44:21,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695933412] [2023-12-02 13:44:21,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695933412] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:44:21,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429110198] [2023-12-02 13:44:21,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:44:21,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:44:21,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b3a478-c833-4fb9-8186-6ef43d1115ed/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:44:21,328 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b3a478-c833-4fb9-8186-6ef43d1115ed/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:44:21,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b3a478-c833-4fb9-8186-6ef43d1115ed/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 13:44:21,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:44:21,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 18 conjunts are in the unsatisfiable core [2023-12-02 13:44:21,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:44:21,807 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 13:44:21,807 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:44:21,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429110198] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:44:21,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:44:21,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2023-12-02 13:44:21,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750575396] [2023-12-02 13:44:21,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:44:21,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 13:44:21,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:44:21,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 13:44:21,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-12-02 13:44:21,810 INFO L87 Difference]: Start difference. First operand 207 states and 245 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-02 13:44:22,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:44:22,147 INFO L93 Difference]: Finished difference Result 371 states and 441 transitions. [2023-12-02 13:44:22,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 13:44:22,148 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) Word has length 55 [2023-12-02 13:44:22,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:44:22,150 INFO L225 Difference]: With dead ends: 371 [2023-12-02 13:44:22,150 INFO L226 Difference]: Without dead ends: 166 [2023-12-02 13:44:22,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2023-12-02 13:44:22,152 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 95 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 13:44:22,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 153 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 13:44:22,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-12-02 13:44:22,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 150. [2023-12-02 13:44:22,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 103 states have (on average 1.1844660194174756) internal successors, (122), 111 states have internal predecessors, (122), 23 states have call successors, (23), 22 states have call predecessors, (23), 23 states have return successors, (26), 23 states have call predecessors, (26), 23 states have call successors, (26) [2023-12-02 13:44:22,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 171 transitions. [2023-12-02 13:44:22,194 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 171 transitions. Word has length 55 [2023-12-02 13:44:22,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:44:22,194 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 171 transitions. [2023-12-02 13:44:22,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-02 13:44:22,195 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 171 transitions. [2023-12-02 13:44:22,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-02 13:44:22,197 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:44:22,197 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-12-02 13:44:22,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b3a478-c833-4fb9-8186-6ef43d1115ed/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 13:44:22,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b3a478-c833-4fb9-8186-6ef43d1115ed/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:44:22,400 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:44:22,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:44:22,401 INFO L85 PathProgramCache]: Analyzing trace with hash 2028112799, now seen corresponding path program 2 times [2023-12-02 13:44:22,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:44:22,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297828232] [2023-12-02 13:44:22,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:44:22,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:44:22,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:44:22,531 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 13:44:22,531 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:44:22,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297828232] [2023-12-02 13:44:22,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297828232] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:44:22,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006176304] [2023-12-02 13:44:22,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 13:44:22,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:44:22,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b3a478-c833-4fb9-8186-6ef43d1115ed/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:44:22,533 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b3a478-c833-4fb9-8186-6ef43d1115ed/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:44:22,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b3a478-c833-4fb9-8186-6ef43d1115ed/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 13:44:22,617 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 13:44:22,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:44:22,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-02 13:44:22,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:44:22,884 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 13:44:22,884 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:44:23,257 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-02 13:44:23,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006176304] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:44:23,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1102904056] [2023-12-02 13:44:23,279 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2023-12-02 13:44:23,279 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:44:23,283 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:44:23,288 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:44:23,288 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:44:25,898 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 120 for LOIs [2023-12-02 13:44:25,941 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 155 for LOIs [2023-12-02 13:44:27,854 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 155 for LOIs [2023-12-02 13:44:28,122 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 140 for LOIs [2023-12-02 13:44:28,164 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:44:39,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1102904056] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:44:39,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 13:44:39,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [8, 9, 8] total 41 [2023-12-02 13:44:39,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701437565] [2023-12-02 13:44:39,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:44:39,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-02 13:44:39,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:44:39,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-02 13:44:39,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=1428, Unknown=0, NotChecked=0, Total=1640 [2023-12-02 13:44:39,251 INFO L87 Difference]: Start difference. First operand 150 states and 171 transitions. Second operand has 23 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 13:44:44,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:44:44,482 INFO L93 Difference]: Finished difference Result 363 states and 420 transitions. [2023-12-02 13:44:44,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-02 13:44:44,483 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 55 [2023-12-02 13:44:44,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:44:44,485 INFO L225 Difference]: With dead ends: 363 [2023-12-02 13:44:44,485 INFO L226 Difference]: Without dead ends: 247 [2023-12-02 13:44:44,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 123 SyntacticMatches, 10 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 691 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=335, Invalid=2115, Unknown=0, NotChecked=0, Total=2450 [2023-12-02 13:44:44,487 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 102 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-02 13:44:44,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 359 Invalid, 1061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-02 13:44:44,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2023-12-02 13:44:44,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 221. [2023-12-02 13:44:44,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 152 states have (on average 1.1710526315789473) internal successors, (178), 162 states have internal predecessors, (178), 33 states have call successors, (33), 32 states have call predecessors, (33), 35 states have return successors, (38), 33 states have call predecessors, (38), 33 states have call successors, (38) [2023-12-02 13:44:44,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 249 transitions. [2023-12-02 13:44:44,545 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 249 transitions. Word has length 55 [2023-12-02 13:44:44,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:44:44,545 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 249 transitions. [2023-12-02 13:44:44,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 13:44:44,546 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 249 transitions. [2023-12-02 13:44:44,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-12-02 13:44:44,547 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:44:44,547 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:44:44,552 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b3a478-c833-4fb9-8186-6ef43d1115ed/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 13:44:44,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b3a478-c833-4fb9-8186-6ef43d1115ed/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:44:44,748 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:44:44,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:44:44,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1538902131, now seen corresponding path program 1 times [2023-12-02 13:44:44,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:44:44,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429987666] [2023-12-02 13:44:44,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:44:44,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:44:44,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:44:44,895 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 13:44:44,895 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:44:44,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429987666] [2023-12-02 13:44:44,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429987666] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:44:44,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663680757] [2023-12-02 13:44:44,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:44:44,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:44:44,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b3a478-c833-4fb9-8186-6ef43d1115ed/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:44:44,897 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b3a478-c833-4fb9-8186-6ef43d1115ed/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:44:44,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b3a478-c833-4fb9-8186-6ef43d1115ed/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 13:44:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:44:44,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-02 13:44:44,981 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:44:45,286 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 13:44:45,286 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:44:45,637 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 13:44:45,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663680757] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:44:45,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2021253727] [2023-12-02 13:44:45,640 INFO L159 IcfgInterpreter]: Started Sifa with 37 locations of interest [2023-12-02 13:44:45,640 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:44:45,641 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:44:45,641 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:44:45,641 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:44:51,018 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 138 for LOIs [2023-12-02 13:44:51,082 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 31 for LOIs [2023-12-02 13:44:51,274 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 30 for LOIs [2023-12-02 13:44:51,307 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 40 for LOIs [2023-12-02 13:44:51,320 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:44:54,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [2021253727] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:44:54,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 13:44:54,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [8, 12, 11] total 55 [2023-12-02 13:44:54,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996392532] [2023-12-02 13:44:54,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:44:54,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-12-02 13:44:54,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:44:54,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-12-02 13:44:54,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=2562, Unknown=0, NotChecked=0, Total=2970 [2023-12-02 13:44:54,346 INFO L87 Difference]: Start difference. First operand 221 states and 249 transitions. Second operand has 31 states, 24 states have (on average 1.25) internal successors, (30), 25 states have internal predecessors, (30), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 13:44:59,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:44:59,734 INFO L93 Difference]: Finished difference Result 455 states and 528 transitions. [2023-12-02 13:44:59,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-02 13:44:59,735 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 24 states have (on average 1.25) internal successors, (30), 25 states have internal predecessors, (30), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 56 [2023-12-02 13:44:59,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:44:59,737 INFO L225 Difference]: With dead ends: 455 [2023-12-02 13:44:59,737 INFO L226 Difference]: Without dead ends: 339 [2023-12-02 13:44:59,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 117 SyntacticMatches, 5 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2464 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=1011, Invalid=7179, Unknown=0, NotChecked=0, Total=8190 [2023-12-02 13:44:59,741 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 245 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 1679 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 1855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 1679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-02 13:44:59,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 443 Invalid, 1855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 1679 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-02 13:44:59,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2023-12-02 13:44:59,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 312. [2023-12-02 13:44:59,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 216 states have (on average 1.1666666666666667) internal successors, (252), 228 states have internal predecessors, (252), 47 states have call successors, (47), 45 states have call predecessors, (47), 48 states have return successors, (54), 46 states have call predecessors, (54), 47 states have call successors, (54) [2023-12-02 13:44:59,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 353 transitions. [2023-12-02 13:44:59,817 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 353 transitions. Word has length 56 [2023-12-02 13:44:59,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:44:59,817 INFO L495 AbstractCegarLoop]: Abstraction has 312 states and 353 transitions. [2023-12-02 13:44:59,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 24 states have (on average 1.25) internal successors, (30), 25 states have internal predecessors, (30), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 13:44:59,818 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 353 transitions. [2023-12-02 13:44:59,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 13:44:59,819 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:44:59,819 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:44:59,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b3a478-c833-4fb9-8186-6ef43d1115ed/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-02 13:45:00,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b3a478-c833-4fb9-8186-6ef43d1115ed/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 13:45:00,020 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:45:00,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:45:00,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1074987962, now seen corresponding path program 1 times [2023-12-02 13:45:00,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:45:00,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555784464] [2023-12-02 13:45:00,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:45:00,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:45:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:45:00,201 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 13:45:00,201 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:45:00,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555784464] [2023-12-02 13:45:00,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555784464] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:45:00,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791598859] [2023-12-02 13:45:00,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:45:00,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:45:00,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b3a478-c833-4fb9-8186-6ef43d1115ed/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:45:00,203 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b3a478-c833-4fb9-8186-6ef43d1115ed/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:45:00,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b3a478-c833-4fb9-8186-6ef43d1115ed/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 13:45:00,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:45:00,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 23 conjunts are in the unsatisfiable core [2023-12-02 13:45:00,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:45:00,336 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 13:45:00,336 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:45:00,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791598859] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:45:00,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:45:00,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 13 [2023-12-02 13:45:00,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264022306] [2023-12-02 13:45:00,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:45:00,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 13:45:00,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:45:00,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 13:45:00,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-12-02 13:45:00,338 INFO L87 Difference]: Start difference. First operand 312 states and 353 transitions. Second operand has 9 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 13:45:00,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:45:00,571 INFO L93 Difference]: Finished difference Result 509 states and 588 transitions. [2023-12-02 13:45:00,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 13:45:00,572 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2023-12-02 13:45:00,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:45:00,572 INFO L225 Difference]: With dead ends: 509 [2023-12-02 13:45:00,572 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 13:45:00,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2023-12-02 13:45:00,574 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 35 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:45:00,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 375 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:45:00,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 13:45:00,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 13:45:00,575 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 13:45:00,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 13:45:00,576 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2023-12-02 13:45:00,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:45:00,576 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 13:45:00,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 13:45:00,576 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 13:45:00,576 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 13:45:00,578 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 13:45:00,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b3a478-c833-4fb9-8186-6ef43d1115ed/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 13:45:00,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b3a478-c833-4fb9-8186-6ef43d1115ed/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-02 13:45:00,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-02 13:45:08,003 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 196 202) no Hoare annotation was computed. [2023-12-02 13:45:08,003 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 196 202) the Hoare annotation is: true [2023-12-02 13:45:08,003 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 853 864) the Hoare annotation is: (let ((.cse0 (= |old(~methaneLevelCritical~0)| 0)) (.cse1 (not (= ~methaneLevelCritical~0 0))) (.cse2 (= 0 ~systemActive~0))) (and (or (not (= ~pumpRunning~0 0)) .cse0 .cse1 .cse2) (or .cse0 .cse1 (not (= ~pumpRunning~0 1)) .cse2))) [2023-12-02 13:45:08,003 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 853 864) no Hoare annotation was computed. [2023-12-02 13:45:08,003 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 865 873) the Hoare annotation is: true [2023-12-02 13:45:08,004 INFO L899 garLoopResultBuilder]: For program point isMethaneLevelCriticalEXIT(lines 865 873) no Hoare annotation was computed. [2023-12-02 13:45:08,004 INFO L902 garLoopResultBuilder]: At program point L737(line 737) the Hoare annotation is: true [2023-12-02 13:45:08,004 INFO L899 garLoopResultBuilder]: For program point L737-1(line 737) no Hoare annotation was computed. [2023-12-02 13:45:08,004 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 731 760) no Hoare annotation was computed. [2023-12-02 13:45:08,004 INFO L899 garLoopResultBuilder]: For program point L756(lines 731 760) no Hoare annotation was computed. [2023-12-02 13:45:08,004 INFO L899 garLoopResultBuilder]: For program point L752(line 752) no Hoare annotation was computed. [2023-12-02 13:45:08,004 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 731 760) the Hoare annotation is: true [2023-12-02 13:45:08,004 INFO L899 garLoopResultBuilder]: For program point L745(lines 745 749) no Hoare annotation was computed. [2023-12-02 13:45:08,004 INFO L902 garLoopResultBuilder]: At program point L745-1(lines 745 749) the Hoare annotation is: true [2023-12-02 13:45:08,004 INFO L902 garLoopResultBuilder]: At program point L741-2(lines 741 755) the Hoare annotation is: true [2023-12-02 13:45:08,005 INFO L899 garLoopResultBuilder]: For program point L725(line 725) no Hoare annotation was computed. [2023-12-02 13:45:08,005 INFO L899 garLoopResultBuilder]: For program point L176-1(lines 175 194) no Hoare annotation was computed. [2023-12-02 13:45:08,005 INFO L899 garLoopResultBuilder]: For program point L238(lines 238 246) no Hoare annotation was computed. [2023-12-02 13:45:08,005 INFO L899 garLoopResultBuilder]: For program point L940(lines 940 946) no Hoare annotation was computed. [2023-12-02 13:45:08,005 INFO L899 garLoopResultBuilder]: For program point L234(lines 234 251) no Hoare annotation was computed. [2023-12-02 13:45:08,005 INFO L899 garLoopResultBuilder]: For program point L936(lines 936 949) no Hoare annotation was computed. [2023-12-02 13:45:08,005 INFO L899 garLoopResultBuilder]: For program point L936-1(lines 921 953) no Hoare annotation was computed. [2023-12-02 13:45:08,006 INFO L895 garLoopResultBuilder]: At program point L928(line 928) the Hoare annotation is: (let ((.cse2 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse10 (= ~methaneLevelCritical~0 0))) (let ((.cse8 (= ~pumpRunning~0 0)) (.cse1 (not .cse10)) (.cse9 (or (< ~waterLevel~0 |old(~waterLevel~0)|) .cse2)) (.cse3 (= 0 ~systemActive~0))) (let ((.cse4 (forall ((|v_ULTIMATE.start_test_~splverifierCounter~0#1_BEFORE_CALL_17| Int) (|v_ULTIMATE.start_test_~tmp~0#1_BEFORE_CALL_21| Int)) (or (< (+ |old(~waterLevel~0)| 2147483648) 0) (< 3 |v_ULTIMATE.start_test_~splverifierCounter~0#1_BEFORE_CALL_17|) (< 2147483647 |old(~waterLevel~0)|) (= |v_ULTIMATE.start_test_~tmp~0#1_BEFORE_CALL_21| 0) (< (+ |v_ULTIMATE.start_test_~tmp~0#1_BEFORE_CALL_21| 2147483648) 0) (< 1 |old(~pumpRunning~0)|) (< 2147483647 |v_ULTIMATE.start_test_~tmp~0#1_BEFORE_CALL_21|)))) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse5 (not (= |old(~pumpRunning~0)| 1))) (.cse6 (<= ~waterLevel~0 |old(~waterLevel~0)|)) (.cse7 (= ~pumpRunning~0 1)) (.cse11 (and .cse8 .cse1 .cse9 (not .cse3)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (<= 1 |old(~waterLevel~0)|)) .cse1 .cse5 (and (<= |old(~waterLevel~0)| 0) .cse2) .cse3 .cse4) (or .cse0 (and (<= 2 ~waterLevel~0) .cse6 .cse7) .cse3 (and .cse8 (<= ~waterLevel~0 1) .cse9)) (or .cse10 .cse5 .cse11 .cse3) (or .cse5 (and .cse6 .cse7) .cse11 .cse3))))) [2023-12-02 13:45:08,006 INFO L899 garLoopResultBuilder]: For program point L928-1(line 928) no Hoare annotation was computed. [2023-12-02 13:45:08,006 INFO L895 garLoopResultBuilder]: At program point L276(line 276) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 1))) (.cse1 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse2 (= 0 ~systemActive~0))) (and (or (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (<= 1 |old(~waterLevel~0)|)) (not (= ~methaneLevelCritical~0 0)) .cse0 .cse1 .cse2 (forall ((|v_ULTIMATE.start_test_~splverifierCounter~0#1_BEFORE_CALL_17| Int) (|v_ULTIMATE.start_test_~tmp~0#1_BEFORE_CALL_21| Int)) (or (< (+ |old(~waterLevel~0)| 2147483648) 0) (< 3 |v_ULTIMATE.start_test_~splverifierCounter~0#1_BEFORE_CALL_17|) (< 2147483647 |old(~waterLevel~0)|) (= |v_ULTIMATE.start_test_~tmp~0#1_BEFORE_CALL_21| 0) (< (+ |v_ULTIMATE.start_test_~tmp~0#1_BEFORE_CALL_21| 2147483648) 0) (< 1 |old(~pumpRunning~0)|) (< 2147483647 |v_ULTIMATE.start_test_~tmp~0#1_BEFORE_CALL_21|)))) (or (not (= |old(~pumpRunning~0)| 0)) .cse2) (or .cse0 (and (or (and (<= ~waterLevel~0 0) .cse1) (< ~waterLevel~0 |old(~waterLevel~0)|)) (= ~pumpRunning~0 1)) .cse2))) [2023-12-02 13:45:08,006 INFO L899 garLoopResultBuilder]: For program point L276-1(line 276) no Hoare annotation was computed. [2023-12-02 13:45:08,007 INFO L895 garLoopResultBuilder]: At program point L244(line 244) the Hoare annotation is: (let ((.cse2 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse0 (not (= |old(~pumpRunning~0)| 1))) (.cse1 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 (and (or (and (= |old(~waterLevel~0)| (+ ~waterLevel~0 1)) (<= 1 |old(~waterLevel~0)|)) .cse2) (= |timeShift_isMethaneAlarm_#res#1| 0)) (forall ((|v_ULTIMATE.start_test_~splverifierCounter~0#1_BEFORE_CALL_17| Int) (|v_ULTIMATE.start_test_~tmp~0#1_BEFORE_CALL_21| Int)) (or (< (+ |old(~waterLevel~0)| 2147483648) 0) (< 3 |v_ULTIMATE.start_test_~splverifierCounter~0#1_BEFORE_CALL_17|) (< 2147483647 |old(~waterLevel~0)|) (= |v_ULTIMATE.start_test_~tmp~0#1_BEFORE_CALL_21| 0) (< (+ |v_ULTIMATE.start_test_~tmp~0#1_BEFORE_CALL_21| 2147483648) 0) (< 1 |old(~pumpRunning~0)|) (< 2147483647 |v_ULTIMATE.start_test_~tmp~0#1_BEFORE_CALL_21|)))) (or (= ~methaneLevelCritical~0 0) .cse0 .cse1) (or (and (= |timeShift_processEnvironment_~tmp~2#1| ~methaneLevelCritical~0) (or (and (<= ~waterLevel~0 0) .cse2) (< ~waterLevel~0 |old(~waterLevel~0)|)) (= ~pumpRunning~0 1)) .cse0 .cse1) (or (not (= |old(~pumpRunning~0)| 0)) .cse1))) [2023-12-02 13:45:08,007 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 172 195) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse6 (<= ~waterLevel~0 |old(~waterLevel~0)|)) (.cse1 (not (= ~methaneLevelCritical~0 0))) (.cse5 (not (= |old(~pumpRunning~0)| 1))) (.cse2 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse3 (= 0 ~systemActive~0)) (.cse4 (forall ((|v_ULTIMATE.start_test_~splverifierCounter~0#1_BEFORE_CALL_17| Int) (|v_ULTIMATE.start_test_~tmp~0#1_BEFORE_CALL_21| Int)) (or (< (+ |old(~waterLevel~0)| 2147483648) 0) (< 3 |v_ULTIMATE.start_test_~splverifierCounter~0#1_BEFORE_CALL_17|) (< 2147483647 |old(~waterLevel~0)|) (= |v_ULTIMATE.start_test_~tmp~0#1_BEFORE_CALL_21| 0) (< (+ |v_ULTIMATE.start_test_~tmp~0#1_BEFORE_CALL_21| 2147483648) 0) (< 1 |old(~pumpRunning~0)|) (< 2147483647 |v_ULTIMATE.start_test_~tmp~0#1_BEFORE_CALL_21|))))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse5 (and .cse6 (= ~pumpRunning~0 1)) .cse3) (or .cse0 .cse3 (and (= ~pumpRunning~0 0) .cse6)) (or .cse1 .cse5 .cse2 .cse3 .cse4))) [2023-12-02 13:45:08,007 INFO L899 garLoopResultBuilder]: For program point L930(lines 930 950) no Hoare annotation was computed. [2023-12-02 13:45:08,007 INFO L895 garLoopResultBuilder]: At program point L249(line 249) the Hoare annotation is: (let ((.cse0 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse1 (= 0 ~systemActive~0))) (and (or (not (= |old(~pumpRunning~0)| 0)) (and (= ~pumpRunning~0 0) (or (< ~waterLevel~0 |old(~waterLevel~0)|) .cse0)) .cse1) (or (< |old(~pumpRunning~0)| 0) (not (= ~methaneLevelCritical~0 0)) .cse0 .cse1 (forall ((|v_ULTIMATE.start_test_~splverifierCounter~0#1_BEFORE_CALL_17| Int) (|v_ULTIMATE.start_test_~tmp~0#1_BEFORE_CALL_21| Int)) (or (< (+ |old(~waterLevel~0)| 2147483648) 0) (< 3 |v_ULTIMATE.start_test_~splverifierCounter~0#1_BEFORE_CALL_17|) (< 2147483647 |old(~waterLevel~0)|) (= |v_ULTIMATE.start_test_~tmp~0#1_BEFORE_CALL_21| 0) (< (+ |v_ULTIMATE.start_test_~tmp~0#1_BEFORE_CALL_21| 2147483648) 0) (< 1 |old(~pumpRunning~0)|) (< 2147483647 |v_ULTIMATE.start_test_~tmp~0#1_BEFORE_CALL_21|)))) (or (not (= |old(~pumpRunning~0)| 1)) .cse1))) [2023-12-02 13:45:08,007 INFO L899 garLoopResultBuilder]: For program point L249-1(lines 230 254) no Hoare annotation was computed. [2023-12-02 13:45:08,008 INFO L899 garLoopResultBuilder]: For program point L183-1(lines 183 189) no Hoare annotation was computed. [2023-12-02 13:45:08,008 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 172 195) no Hoare annotation was computed. [2023-12-02 13:45:08,008 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 725) no Hoare annotation was computed. [2023-12-02 13:45:08,008 INFO L895 garLoopResultBuilder]: At program point L151(lines 102 152) the Hoare annotation is: false [2023-12-02 13:45:08,008 INFO L899 garLoopResultBuilder]: For program point L812(lines 812 819) no Hoare annotation was computed. [2023-12-02 13:45:08,008 INFO L899 garLoopResultBuilder]: For program point L812-2(lines 812 819) no Hoare annotation was computed. [2023-12-02 13:45:08,008 INFO L899 garLoopResultBuilder]: For program point L123(lines 123 129) no Hoare annotation was computed. [2023-12-02 13:45:08,008 INFO L899 garLoopResultBuilder]: For program point L123-1(lines 123 129) no Hoare annotation was computed. [2023-12-02 13:45:08,008 INFO L895 garLoopResultBuilder]: At program point L148(lines 103 150) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~tmp~7#1| 1)) (.cse1 (= ~pumpRunning~0 0)) (.cse2 (= 1 ~systemActive~0)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 (<= ~waterLevel~0 1) .cse2 .cse3) (and .cse0 .cse2 .cse3 (= ~pumpRunning~0 1)) (and .cse0 .cse1 .cse2 (not (= ~methaneLevelCritical~0 0)) .cse3))) [2023-12-02 13:45:08,009 INFO L895 garLoopResultBuilder]: At program point L115(line 115) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~tmp~7#1| 1)) (.cse1 (= 1 ~systemActive~0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 (= ~pumpRunning~0 1)) (and .cse0 (= ~pumpRunning~0 0) .cse1 .cse2))) [2023-12-02 13:45:08,009 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-02 13:45:08,009 INFO L895 garLoopResultBuilder]: At program point L141-2(lines 133 146) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~tmp~7#1| 1)) (.cse1 (= 1 ~systemActive~0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 (= ~pumpRunning~0 1)) (and .cse0 (= ~pumpRunning~0 0) .cse1 .cse2))) [2023-12-02 13:45:08,009 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-02 13:45:08,009 INFO L899 garLoopResultBuilder]: For program point L104(lines 103 150) no Hoare annotation was computed. [2023-12-02 13:45:08,009 INFO L895 garLoopResultBuilder]: At program point L125(line 125) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~tmp~7#1| 1)) (.cse1 (= 1 ~systemActive~0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 (= ~pumpRunning~0 1)) (and .cse0 (= ~pumpRunning~0 0) .cse1 .cse2))) [2023-12-02 13:45:08,009 INFO L899 garLoopResultBuilder]: For program point L154(lines 93 158) no Hoare annotation was computed. [2023-12-02 13:45:08,009 INFO L899 garLoopResultBuilder]: For program point L113(lines 113 119) no Hoare annotation was computed. [2023-12-02 13:45:08,010 INFO L899 garLoopResultBuilder]: For program point L113-1(lines 113 119) no Hoare annotation was computed. [2023-12-02 13:45:08,010 INFO L895 garLoopResultBuilder]: At program point L223(line 223) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (not (= |old(~pumpRunning~0)| 1)) .cse0 (= ~pumpRunning~0 1)) (or (not (= |old(~pumpRunning~0)| 0)) .cse0))) [2023-12-02 13:45:08,010 INFO L899 garLoopResultBuilder]: For program point L223-1(lines 204 228) no Hoare annotation was computed. [2023-12-02 13:45:08,010 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 204 228) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (not (= |old(~pumpRunning~0)| 1)) .cse0 (= ~pumpRunning~0 1)) (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) .cse0))) [2023-12-02 13:45:08,010 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 204 228) no Hoare annotation was computed. [2023-12-02 13:45:08,010 INFO L895 garLoopResultBuilder]: At program point L218(line 218) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= 0 ~systemActive~0))) (and (or .cse0 (and (= ~pumpRunning~0 0) (<= ~waterLevel~0 1) (= |processEnvironment__wrappee__highWaterSensor_~tmp~1#1| 0)) .cse1) (or .cse0 (and (= |processEnvironment__wrappee__highWaterSensor_isHighWaterLevel_#res#1| 0) (= |processEnvironment__wrappee__highWaterSensor_isHighWaterSensorDry_#res#1| 1)) (not (= ~methaneLevelCritical~0 0)) (forall ((|v_ULTIMATE.start_test_~splverifierCounter~0#1_BEFORE_CALL_17| Int) (|v_ULTIMATE.start_test_~tmp~0#1_BEFORE_CALL_21| Int)) (or (< (+ ~waterLevel~0 2147483648) 0) (< 3 |v_ULTIMATE.start_test_~splverifierCounter~0#1_BEFORE_CALL_17|) (= |v_ULTIMATE.start_test_~tmp~0#1_BEFORE_CALL_21| 0) (< 2147483647 ~waterLevel~0) (< (+ |v_ULTIMATE.start_test_~tmp~0#1_BEFORE_CALL_21| 2147483648) 0) (< 2147483647 |v_ULTIMATE.start_test_~tmp~0#1_BEFORE_CALL_21|))) .cse1) (or (not (= |old(~pumpRunning~0)| 1)) .cse1))) [2023-12-02 13:45:08,010 INFO L899 garLoopResultBuilder]: For program point L212(lines 212 220) no Hoare annotation was computed. [2023-12-02 13:45:08,011 INFO L899 garLoopResultBuilder]: For program point L208(lines 208 225) no Hoare annotation was computed. [2023-12-02 13:45:08,011 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 841 852) no Hoare annotation was computed. [2023-12-02 13:45:08,011 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 841 852) the Hoare annotation is: (let ((.cse1 (not (= ~pumpRunning~0 1))) (.cse0 (not (= ~methaneLevelCritical~0 0))) (.cse2 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse4 (forall ((|v_ULTIMATE.start_test_~splverifierCounter~0#1_BEFORE_CALL_17| Int) (|v_ULTIMATE.start_test_~tmp~0#1_BEFORE_CALL_21| Int)) (or (< (+ |old(~waterLevel~0)| 2147483648) 0) (< 3 |v_ULTIMATE.start_test_~splverifierCounter~0#1_BEFORE_CALL_17|) (< 2147483647 |old(~waterLevel~0)|) (= |v_ULTIMATE.start_test_~tmp~0#1_BEFORE_CALL_21| 0) (< (+ |v_ULTIMATE.start_test_~tmp~0#1_BEFORE_CALL_21| 2147483648) 0) (< 1 ~pumpRunning~0) (< 2147483647 |v_ULTIMATE.start_test_~tmp~0#1_BEFORE_CALL_21|)))) (.cse6 (not (= ~pumpRunning~0 0))) (.cse5 (<= ~waterLevel~0 |old(~waterLevel~0)|)) (.cse3 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse1 .cse5 .cse3) (or .cse6 .cse0 .cse2 .cse3 .cse4) (or .cse6 .cse5 .cse3))) [2023-12-02 13:45:08,013 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:45:08,015 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 13:45:08,025 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (forall v_ULTIMATE.start_test_~splverifierCounter~0#1_BEFORE_CALL_17 : int, v_ULTIMATE.start_test_~tmp~0#1_BEFORE_CALL_21 : int :: (((((old(~waterLevel~0) + 2147483648 < 0 || 3 < v_ULTIMATE.start_test_~splverifierCounter~0#1_BEFORE_CALL_17) || 2147483647 < old(~waterLevel~0)) || v_ULTIMATE.start_test_~tmp~0#1_BEFORE_CALL_21 == 0) || v_ULTIMATE.start_test_~tmp~0#1_BEFORE_CALL_21 + 2147483648 < 0) || 1 < old(~pumpRunning~0)) || 2147483647 < v_ULTIMATE.start_test_~tmp~0#1_BEFORE_CALL_21) could not be translated [2023-12-02 13:45:08,026 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (forall v_ULTIMATE.start_test_~splverifierCounter~0#1_BEFORE_CALL_17 : int, v_ULTIMATE.start_test_~tmp~0#1_BEFORE_CALL_21 : int :: (((((old(~waterLevel~0) + 2147483648 < 0 || 3 < v_ULTIMATE.start_test_~splverifierCounter~0#1_BEFORE_CALL_17) || 2147483647 < old(~waterLevel~0)) || v_ULTIMATE.start_test_~tmp~0#1_BEFORE_CALL_21 == 0) || v_ULTIMATE.start_test_~tmp~0#1_BEFORE_CALL_21 + 2147483648 < 0) || 1 < old(~pumpRunning~0)) || 2147483647 < v_ULTIMATE.start_test_~tmp~0#1_BEFORE_CALL_21) could not be translated [2023-12-02 13:45:08,027 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 01:45:08 BoogieIcfgContainer [2023-12-02 13:45:08,027 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 13:45:08,027 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 13:45:08,027 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 13:45:08,027 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 13:45:08,028 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:44:19" (3/4) ... [2023-12-02 13:45:08,029 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 13:45:08,031 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2023-12-02 13:45:08,031 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2023-12-02 13:45:08,031 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2023-12-02 13:45:08,031 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2023-12-02 13:45:08,031 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2023-12-02 13:45:08,032 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2023-12-02 13:45:08,032 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2023-12-02 13:45:08,038 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 43 nodes and edges [2023-12-02 13:45:08,038 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-12-02 13:45:08,039 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-12-02 13:45:08,039 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 13:45:08,040 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 13:45:08,060 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!((\old(pumpRunning) == 1)) || ((waterLevel <= \old(waterLevel)) && (pumpRunning == 1))) || (0 == systemActive)) && ((!((\old(pumpRunning) == 0)) || (0 == systemActive)) || ((pumpRunning == 0) && (waterLevel <= \old(waterLevel))))) [2023-12-02 13:45:08,089 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!((\old(pumpRunning) == 1)) || ((waterLevel <= \old(waterLevel)) && (pumpRunning == 1))) || (0 == systemActive)) && ((!((\old(pumpRunning) == 0)) || (0 == systemActive)) || ((pumpRunning == 0) && (waterLevel <= \old(waterLevel))))) [2023-12-02 13:45:08,125 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b3a478-c833-4fb9-8186-6ef43d1115ed/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 13:45:08,125 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b3a478-c833-4fb9-8186-6ef43d1115ed/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 13:45:08,126 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 13:45:08,126 INFO L158 Benchmark]: Toolchain (without parser) took 49806.65ms. Allocated memory was 172.0MB in the beginning and 599.8MB in the end (delta: 427.8MB). Free memory was 124.4MB in the beginning and 274.6MB in the end (delta: -150.2MB). Peak memory consumption was 278.5MB. Max. memory is 16.1GB. [2023-12-02 13:45:08,127 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 123.7MB. Free memory was 70.1MB in the beginning and 70.0MB in the end (delta: 117.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 13:45:08,127 INFO L158 Benchmark]: CACSL2BoogieTranslator took 391.58ms. Allocated memory is still 172.0MB. Free memory was 124.4MB in the beginning and 105.5MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-12-02 13:45:08,127 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.15ms. Allocated memory is still 172.0MB. Free memory was 104.7MB in the beginning and 102.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 13:45:08,128 INFO L158 Benchmark]: Boogie Preprocessor took 27.27ms. Allocated memory is still 172.0MB. Free memory was 102.5MB in the beginning and 101.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 13:45:08,128 INFO L158 Benchmark]: RCFGBuilder took 444.84ms. Allocated memory is still 172.0MB. Free memory was 101.3MB in the beginning and 75.3MB in the end (delta: 26.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-12-02 13:45:08,128 INFO L158 Benchmark]: TraceAbstraction took 48791.38ms. Allocated memory was 172.0MB in the beginning and 599.8MB in the end (delta: 427.8MB). Free memory was 74.9MB in the beginning and 281.9MB in the end (delta: -207.0MB). Peak memory consumption was 303.5MB. Max. memory is 16.1GB. [2023-12-02 13:45:08,129 INFO L158 Benchmark]: Witness Printer took 98.50ms. Allocated memory is still 599.8MB. Free memory was 281.9MB in the beginning and 274.6MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-12-02 13:45:08,131 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 123.7MB. Free memory was 70.1MB in the beginning and 70.0MB in the end (delta: 117.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 391.58ms. Allocated memory is still 172.0MB. Free memory was 124.4MB in the beginning and 105.5MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.15ms. Allocated memory is still 172.0MB. Free memory was 104.7MB in the beginning and 102.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.27ms. Allocated memory is still 172.0MB. Free memory was 102.5MB in the beginning and 101.3MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 444.84ms. Allocated memory is still 172.0MB. Free memory was 101.3MB in the beginning and 75.3MB in the end (delta: 26.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 48791.38ms. Allocated memory was 172.0MB in the beginning and 599.8MB in the end (delta: 427.8MB). Free memory was 74.9MB in the beginning and 281.9MB in the end (delta: -207.0MB). Peak memory consumption was 303.5MB. Max. memory is 16.1GB. * Witness Printer took 98.50ms. Allocated memory is still 599.8MB. Free memory was 281.9MB in the beginning and 274.6MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 49]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [49] - GenericResultAtLocation [Line: 87]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [87] - GenericResultAtLocation [Line: 159]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [159] - GenericResultAtLocation [Line: 354]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [354] - GenericResultAtLocation [Line: 720]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [720] - GenericResultAtLocation [Line: 729]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [729] - GenericResultAtLocation [Line: 825]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [825] - GenericResultAtLocation [Line: 920]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [920] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (forall v_ULTIMATE.start_test_~splverifierCounter~0#1_BEFORE_CALL_17 : int, v_ULTIMATE.start_test_~tmp~0#1_BEFORE_CALL_21 : int :: (((((old(~waterLevel~0) + 2147483648 < 0 || 3 < v_ULTIMATE.start_test_~splverifierCounter~0#1_BEFORE_CALL_17) || 2147483647 < old(~waterLevel~0)) || v_ULTIMATE.start_test_~tmp~0#1_BEFORE_CALL_21 == 0) || v_ULTIMATE.start_test_~tmp~0#1_BEFORE_CALL_21 + 2147483648 < 0) || 1 < old(~pumpRunning~0)) || 2147483647 < v_ULTIMATE.start_test_~tmp~0#1_BEFORE_CALL_21) could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (forall v_ULTIMATE.start_test_~splverifierCounter~0#1_BEFORE_CALL_17 : int, v_ULTIMATE.start_test_~tmp~0#1_BEFORE_CALL_21 : int :: (((((old(~waterLevel~0) + 2147483648 < 0 || 3 < v_ULTIMATE.start_test_~splverifierCounter~0#1_BEFORE_CALL_17) || 2147483647 < old(~waterLevel~0)) || v_ULTIMATE.start_test_~tmp~0#1_BEFORE_CALL_21 == 0) || v_ULTIMATE.start_test_~tmp~0#1_BEFORE_CALL_21 + 2147483648 < 0) || 1 < old(~pumpRunning~0)) || 2147483647 < v_ULTIMATE.start_test_~tmp~0#1_BEFORE_CALL_21) 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: 725]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 48.7s, OverallIterations: 11, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 12.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 7.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 838 SdHoareTripleChecker+Valid, 4.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 822 mSDsluCounter, 2061 SdHoareTripleChecker+Invalid, 4.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1528 mSDsCounter, 342 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3553 IncrementalHoareTripleChecker+Invalid, 3895 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 342 mSolverCounterUnsat, 533 mSDtfsCounter, 3553 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 575 GetRequests, 369 SyntacticMatches, 17 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3185 ImplicationChecksByTransitivity, 21.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=312occurred in iteration=10, InterpolantAutomatonStates: 127, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 86 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 21 LocationsWithAnnotation, 478 PreInvPairs, 529 NumberOfFragments, 945 HoareAnnotationTreeSize, 478 FomulaSimplifications, 13116 FormulaSimplificationTreeSizeReduction, 1.4s HoareSimplificationTime, 21 FomulaSimplificationsInter, 43661 FormulaSimplificationTreeSizeReductionInter, 5.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 623 NumberOfCodeBlocks, 623 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 717 ConstructedInterpolants, 0 QuantifiedInterpolants, 2097 SizeOfPredicates, 26 NumberOfNonLiveVariables, 982 ConjunctsInSsa, 90 ConjunctsInUnsatCore, 17 InterpolantComputations, 9 PerfectInterpolantSequences, 167/215 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: 10.6s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 10, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 92, DAG_INTERPRETER_EARLY_EXITS: 8, TOOLS_POST_APPLICATIONS: 115, TOOLS_POST_TIME: 4.4s, TOOLS_POST_CALL_APPLICATIONS: 49, TOOLS_POST_CALL_TIME: 3.2s, TOOLS_POST_RETURN_APPLICATIONS: 40, TOOLS_POST_RETURN_TIME: 1.9s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 202, TOOLS_QUANTIFIERELIM_TIME: 9.4s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.6s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 262, FLUID_YES_ANSWERS: 2, DOMAIN_JOIN_APPLICATIONS: 38, DOMAIN_JOIN_TIME: 0.8s, DOMAIN_ALPHA_APPLICATIONS: 2, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 3, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 92, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 2, LOOP_SUMMARIZER_CACHE_MISSES: 2, LOOP_SUMMARIZER_OVERALL_TIME: 5.9s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 5.9s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 3, CALL_SUMMARIZER_APPLICATIONS: 40, CALL_SUMMARIZER_CACHE_MISSES: 8, CALL_SUMMARIZER_OVERALL_TIME: 0.1s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.1s, 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: 1195, DAG_COMPRESSION_RETAINED_NODES: 236, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 103]: Loop Invariant Derived loop invariant: (((((((tmp == 1) && (pumpRunning == 0)) && (waterLevel <= 1)) && (1 == systemActive)) && (splverifierCounter == 0)) || ((((tmp == 1) && (1 == systemActive)) && (splverifierCounter == 0)) && (pumpRunning == 1))) || (((((tmp == 1) && (pumpRunning == 0)) && (1 == systemActive)) && !((methaneLevelCritical == 0))) && (splverifierCounter == 0))) - InvariantResult [Line: 102]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 172]: Loop Invariant Derived loop invariant: (((!((\old(pumpRunning) == 1)) || ((waterLevel <= \old(waterLevel)) && (pumpRunning == 1))) || (0 == systemActive)) && ((!((\old(pumpRunning) == 0)) || (0 == systemActive)) || ((pumpRunning == 0) && (waterLevel <= \old(waterLevel))))) - InvariantResult [Line: 741]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-12-02 13:45:08,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b3a478-c833-4fb9-8186-6ef43d1115ed/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