./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product58.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a 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_d66c55d3-43cd-40c5-85cb-4d869f7f5820/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d66c55d3-43cd-40c5-85cb-4d869f7f5820/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d66c55d3-43cd-40c5-85cb-4d869f7f5820/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d66c55d3-43cd-40c5-85cb-4d869f7f5820/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product58.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d66c55d3-43cd-40c5-85cb-4d869f7f5820/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d66c55d3-43cd-40c5-85cb-4d869f7f5820/bin/utaipan-verify-DbMuA5NWw2 --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 ae631a30e0cfb00652c35b082fd4038988aa5f3b2e1b026ceeb94d0624c45642 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:30:40,333 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:30:40,422 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d66c55d3-43cd-40c5-85cb-4d869f7f5820/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 12:30:40,427 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:30:40,428 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:30:40,467 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:30:40,470 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:30:40,471 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:30:40,471 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:30:40,472 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:30:40,472 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:30:40,473 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:30:40,473 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:30:40,481 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:30:40,481 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:30:40,481 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:30:40,482 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:30:40,482 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:30:40,482 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:30:40,482 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:30:40,483 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:30:40,486 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:30:40,486 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:30:40,487 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:30:40,487 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:30:40,488 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:30:40,488 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:30:40,488 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:30:40,489 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:30:40,489 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:30:40,489 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:30:40,489 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:30:40,490 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:30:40,490 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:30:40,490 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:30:40,491 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:30:40,491 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:30:40,491 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:30:40,491 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:30:40,492 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:30:40,492 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:30:40,493 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:30:40,493 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:30:40,493 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:30:40,493 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:30:40,494 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:30:40,494 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:30:40,494 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_d66c55d3-43cd-40c5-85cb-4d869f7f5820/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d66c55d3-43cd-40c5-85cb-4d869f7f5820/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae631a30e0cfb00652c35b082fd4038988aa5f3b2e1b026ceeb94d0624c45642 [2024-11-02 12:30:40,776 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:30:40,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:30:40,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:30:40,837 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:30:40,842 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:30:40,844 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d66c55d3-43cd-40c5-85cb-4d869f7f5820/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/product-lines/minepump_spec3_product58.cil.c Unable to find full path for "g++" [2024-11-02 12:30:43,124 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:30:43,446 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:30:43,451 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d66c55d3-43cd-40c5-85cb-4d869f7f5820/sv-benchmarks/c/product-lines/minepump_spec3_product58.cil.c [2024-11-02 12:30:43,475 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d66c55d3-43cd-40c5-85cb-4d869f7f5820/bin/utaipan-verify-DbMuA5NWw2/data/9689e1cd3/d98c2a1da9fa48a5a63eee22ba04bcaa/FLAG1eae1d952 [2024-11-02 12:30:43,495 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d66c55d3-43cd-40c5-85cb-4d869f7f5820/bin/utaipan-verify-DbMuA5NWw2/data/9689e1cd3/d98c2a1da9fa48a5a63eee22ba04bcaa [2024-11-02 12:30:43,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:30:43,500 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:30:43,501 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:30:43,502 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:30:43,508 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:30:43,509 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:30:43" (1/1) ... [2024-11-02 12:30:43,512 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ed13a18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:43, skipping insertion in model container [2024-11-02 12:30:43,513 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:30:43" (1/1) ... [2024-11-02 12:30:43,578 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:30:43,947 WARN L251 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_d66c55d3-43cd-40c5-85cb-4d869f7f5820/sv-benchmarks/c/product-lines/minepump_spec3_product58.cil.c[13037,13050] [2024-11-02 12:30:44,005 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:30:44,020 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:30:44,029 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [49] [2024-11-02 12:30:44,031 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [153] [2024-11-02 12:30:44,031 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [188] [2024-11-02 12:30:44,032 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [554] [2024-11-02 12:30:44,032 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [563] [2024-11-02 12:30:44,032 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [672] [2024-11-02 12:30:44,033 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [707] [2024-11-02 12:30:44,033 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [775] [2024-11-02 12:30:44,090 WARN L251 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_d66c55d3-43cd-40c5-85cb-4d869f7f5820/sv-benchmarks/c/product-lines/minepump_spec3_product58.cil.c[13037,13050] [2024-11-02 12:30:44,124 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:30:44,160 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:30:44,160 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:44 WrapperNode [2024-11-02 12:30:44,160 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:30:44,161 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:30:44,162 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:30:44,162 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:30:44,170 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:44" (1/1) ... [2024-11-02 12:30:44,195 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:44" (1/1) ... [2024-11-02 12:30:44,237 INFO L138 Inliner]: procedures = 57, calls = 102, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 230 [2024-11-02 12:30:44,240 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:30:44,240 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:30:44,241 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:30:44,241 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:30:44,249 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:44" (1/1) ... [2024-11-02 12:30:44,250 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:44" (1/1) ... [2024-11-02 12:30:44,252 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:44" (1/1) ... [2024-11-02 12:30:44,252 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:44" (1/1) ... [2024-11-02 12:30:44,258 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:44" (1/1) ... [2024-11-02 12:30:44,270 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:44" (1/1) ... [2024-11-02 12:30:44,272 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:44" (1/1) ... [2024-11-02 12:30:44,277 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:44" (1/1) ... [2024-11-02 12:30:44,280 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:30:44,281 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:30:44,281 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:30:44,281 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:30:44,282 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:44" (1/1) ... [2024-11-02 12:30:44,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:30:44,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d66c55d3-43cd-40c5-85cb-4d869f7f5820/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:30:44,344 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d66c55d3-43cd-40c5-85cb-4d869f7f5820/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:30:44,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d66c55d3-43cd-40c5-85cb-4d869f7f5820/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:30:44,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:30:44,390 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2024-11-02 12:30:44,390 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2024-11-02 12:30:44,390 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2024-11-02 12:30:44,391 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2024-11-02 12:30:44,391 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-02 12:30:44,391 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-02 12:30:44,391 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-02 12:30:44,391 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-02 12:30:44,392 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2024-11-02 12:30:44,393 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2024-11-02 12:30:44,393 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2024-11-02 12:30:44,393 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2024-11-02 12:30:44,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:30:44,394 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2024-11-02 12:30:44,394 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2024-11-02 12:30:44,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:30:44,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:30:44,513 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:30:44,517 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:30:45,001 INFO L? ?]: Removed 53 outVars from TransFormulas that were not future-live. [2024-11-02 12:30:45,001 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:30:45,215 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:30:45,215 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-02 12:30:45,215 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:30:45 BoogieIcfgContainer [2024-11-02 12:30:45,216 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:30:45,219 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:30:45,219 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:30:45,226 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:30:45,226 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:30:43" (1/3) ... [2024-11-02 12:30:45,227 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3323e1a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:30:45, skipping insertion in model container [2024-11-02 12:30:45,227 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:44" (2/3) ... [2024-11-02 12:30:45,228 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3323e1a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:30:45, skipping insertion in model container [2024-11-02 12:30:45,228 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:30:45" (3/3) ... [2024-11-02 12:30:45,229 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product58.cil.c [2024-11-02 12:30:45,244 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:30:45,244 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:30:45,322 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:30:45,333 INFO L333 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, 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;@29252715, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:30:45,333 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:30:45,340 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) [2024-11-02 12:30:45,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-02 12:30:45,351 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:45,352 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:30:45,353 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:30:45,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:45,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1301353447, now seen corresponding path program 1 times [2024-11-02 12:30:45,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:45,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474599754] [2024-11-02 12:30:45,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:45,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:45,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:45,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:30:45,568 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:45,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474599754] [2024-11-02 12:30:45,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474599754] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:45,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:45,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:30:45,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705854524] [2024-11-02 12:30:45,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:45,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-02 12:30:45,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:45,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-02 12:30:45,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 12:30:45,613 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) [2024-11-02 12:30:45,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:45,689 INFO L93 Difference]: Finished difference Result 114 states and 155 transitions. [2024-11-02 12:30:45,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-02 12:30:45,692 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 [2024-11-02 12:30:45,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:45,702 INFO L225 Difference]: With dead ends: 114 [2024-11-02 12:30:45,703 INFO L226 Difference]: Without dead ends: 53 [2024-11-02 12:30:45,707 INFO L431 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 [2024-11-02 12:30:45,711 INFO L432 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 [2024-11-02 12:30:45,712 INFO L433 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] [2024-11-02 12:30:45,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-11-02 12:30:45,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-11-02 12:30:45,754 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) [2024-11-02 12:30:45,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2024-11-02 12:30:45,758 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 17 [2024-11-02 12:30:45,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:45,759 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2024-11-02 12:30:45,759 INFO L472 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) [2024-11-02 12:30:45,760 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2024-11-02 12:30:45,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-02 12:30:45,762 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:45,762 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:30:45,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:30:45,763 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:30:45,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:45,764 INFO L85 PathProgramCache]: Analyzing trace with hash 285174134, now seen corresponding path program 1 times [2024-11-02 12:30:45,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:45,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812623877] [2024-11-02 12:30:45,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:45,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:45,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:45,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:30:45,903 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:45,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812623877] [2024-11-02 12:30:45,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812623877] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:45,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:45,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:30:45,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375187376] [2024-11-02 12:30:45,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:45,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:30:45,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:45,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:30:45,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:30:45,908 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) [2024-11-02 12:30:45,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:45,988 INFO L93 Difference]: Finished difference Result 83 states and 107 transitions. [2024-11-02 12:30:45,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:30:45,989 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 [2024-11-02 12:30:45,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:45,990 INFO L225 Difference]: With dead ends: 83 [2024-11-02 12:30:45,991 INFO L226 Difference]: Without dead ends: 45 [2024-11-02 12:30:45,991 INFO L431 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 [2024-11-02 12:30:45,993 INFO L432 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:45,993 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 75 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:30:45,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-02 12:30:46,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-11-02 12:30:46,001 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) [2024-11-02 12:30:46,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2024-11-02 12:30:46,002 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 18 [2024-11-02 12:30:46,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:46,003 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2024-11-02 12:30:46,003 INFO L472 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) [2024-11-02 12:30:46,003 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2024-11-02 12:30:46,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-02 12:30:46,005 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:46,005 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:30:46,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:30:46,005 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:30:46,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:46,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1629750775, now seen corresponding path program 1 times [2024-11-02 12:30:46,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:46,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234852391] [2024-11-02 12:30:46,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:46,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:46,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:46,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:30:46,261 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:46,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234852391] [2024-11-02 12:30:46,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234852391] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:46,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:46,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-02 12:30:46,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096359304] [2024-11-02 12:30:46,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:46,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:30:46,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:46,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:30:46,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:30:46,264 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 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) [2024-11-02 12:30:46,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:46,442 INFO L93 Difference]: Finished difference Result 149 states and 191 transitions. [2024-11-02 12:30:46,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 12:30:46,443 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 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 [2024-11-02 12:30:46,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:46,445 INFO L225 Difference]: With dead ends: 149 [2024-11-02 12:30:46,445 INFO L226 Difference]: Without dead ends: 106 [2024-11-02 12:30:46,446 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:30:46,447 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 56 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:46,448 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 174 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:30:46,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-02 12:30:46,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 91. [2024-11-02 12:30:46,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 60 states have (on average 1.2666666666666666) internal successors, (76), 69 states have internal predecessors, (76), 16 states have call successors, (16), 12 states have call predecessors, (16), 14 states have return successors, (18), 15 states have call predecessors, (18), 16 states have call successors, (18) [2024-11-02 12:30:46,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 110 transitions. [2024-11-02 12:30:46,477 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 110 transitions. Word has length 20 [2024-11-02 12:30:46,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:46,478 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 110 transitions. [2024-11-02 12:30:46,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 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) [2024-11-02 12:30:46,478 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 110 transitions. [2024-11-02 12:30:46,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-02 12:30:46,482 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:46,482 INFO L215 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] [2024-11-02 12:30:46,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:30:46,483 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:30:46,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:46,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1930787965, now seen corresponding path program 1 times [2024-11-02 12:30:46,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:46,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355089956] [2024-11-02 12:30:46,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:46,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:46,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:46,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:30:46,664 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:46,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355089956] [2024-11-02 12:30:46,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355089956] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:46,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:46,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:30:46,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418650729] [2024-11-02 12:30:46,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:46,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:30:46,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:46,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:30:46,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:30:46,670 INFO L87 Difference]: Start difference. First operand 91 states and 110 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-02 12:30:46,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:46,740 INFO L93 Difference]: Finished difference Result 180 states and 220 transitions. [2024-11-02 12:30:46,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:30:46,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2024-11-02 12:30:46,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:46,745 INFO L225 Difference]: With dead ends: 180 [2024-11-02 12:30:46,745 INFO L226 Difference]: Without dead ends: 91 [2024-11-02 12:30:46,746 INFO L431 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 [2024-11-02 12:30:46,749 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 45 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:46,749 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 40 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:30:46,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-02 12:30:46,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2024-11-02 12:30:46,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 60 states have (on average 1.2333333333333334) internal successors, (74), 69 states have internal predecessors, (74), 16 states have call successors, (16), 12 states have call predecessors, (16), 14 states have return successors, (18), 15 states have call predecessors, (18), 16 states have call successors, (18) [2024-11-02 12:30:46,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 108 transitions. [2024-11-02 12:30:46,786 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 108 transitions. Word has length 23 [2024-11-02 12:30:46,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:46,790 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 108 transitions. [2024-11-02 12:30:46,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-02 12:30:46,790 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 108 transitions. [2024-11-02 12:30:46,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-02 12:30:46,791 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:46,792 INFO L215 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] [2024-11-02 12:30:46,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 12:30:46,792 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:30:46,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:46,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1299922328, now seen corresponding path program 1 times [2024-11-02 12:30:46,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:46,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370010531] [2024-11-02 12:30:46,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:46,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:46,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:46,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:30:46,908 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:46,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370010531] [2024-11-02 12:30:46,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370010531] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:46,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:46,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:30:46,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647304692] [2024-11-02 12:30:46,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:46,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:30:46,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:46,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:30:46,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:30:46,912 INFO L87 Difference]: Start difference. First operand 91 states and 108 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), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-02 12:30:47,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:47,014 INFO L93 Difference]: Finished difference Result 169 states and 208 transitions. [2024-11-02 12:30:47,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:30:47,016 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), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2024-11-02 12:30:47,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:47,017 INFO L225 Difference]: With dead ends: 169 [2024-11-02 12:30:47,018 INFO L226 Difference]: Without dead ends: 126 [2024-11-02 12:30:47,022 INFO L431 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 [2024-11-02 12:30:47,023 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 37 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:47,024 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 81 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:30:47,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-02 12:30:47,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 124. [2024-11-02 12:30:47,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 83 states have (on average 1.2289156626506024) internal successors, (102), 92 states have internal predecessors, (102), 20 states have call successors, (20), 18 states have call predecessors, (20), 20 states have return successors, (26), 21 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-02 12:30:47,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 148 transitions. [2024-11-02 12:30:47,055 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 148 transitions. Word has length 26 [2024-11-02 12:30:47,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:47,055 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 148 transitions. [2024-11-02 12:30:47,056 INFO L472 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), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-02 12:30:47,056 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 148 transitions. [2024-11-02 12:30:47,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-02 12:30:47,057 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:47,057 INFO L215 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] [2024-11-02 12:30:47,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-02 12:30:47,058 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:30:47,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:47,059 INFO L85 PathProgramCache]: Analyzing trace with hash -2033635371, now seen corresponding path program 1 times [2024-11-02 12:30:47,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:47,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190477502] [2024-11-02 12:30:47,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:47,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:47,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:47,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:30:47,542 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:47,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190477502] [2024-11-02 12:30:47,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190477502] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:30:47,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:30:47,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-02 12:30:47,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902011681] [2024-11-02 12:30:47,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:30:47,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-02 12:30:47,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:30:47,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-02 12:30:47,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-02 12:30:47,548 INFO L87 Difference]: Start difference. First operand 124 states and 148 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 12:30:48,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:30:48,325 INFO L93 Difference]: Finished difference Result 369 states and 468 transitions. [2024-11-02 12:30:48,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-02 12:30:48,326 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 34 [2024-11-02 12:30:48,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:30:48,329 INFO L225 Difference]: With dead ends: 369 [2024-11-02 12:30:48,332 INFO L226 Difference]: Without dead ends: 293 [2024-11-02 12:30:48,333 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2024-11-02 12:30:48,337 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 240 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-02 12:30:48,337 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 267 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-02 12:30:48,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2024-11-02 12:30:48,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 267. [2024-11-02 12:30:48,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 183 states have (on average 1.273224043715847) internal successors, (233), 201 states have internal predecessors, (233), 44 states have call successors, (44), 36 states have call predecessors, (44), 39 states have return successors, (59), 43 states have call predecessors, (59), 44 states have call successors, (59) [2024-11-02 12:30:48,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 336 transitions. [2024-11-02 12:30:48,427 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 336 transitions. Word has length 34 [2024-11-02 12:30:48,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:30:48,427 INFO L471 AbstractCegarLoop]: Abstraction has 267 states and 336 transitions. [2024-11-02 12:30:48,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 12:30:48,428 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 336 transitions. [2024-11-02 12:30:48,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-02 12:30:48,429 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:48,429 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:30:48,429 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-02 12:30:48,434 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:30:48,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:48,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1066491569, now seen corresponding path program 1 times [2024-11-02 12:30:48,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:48,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893604583] [2024-11-02 12:30:48,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:48,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:48,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:48,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-02 12:30:48,663 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:30:48,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893604583] [2024-11-02 12:30:48,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893604583] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:30:48,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109780117] [2024-11-02 12:30:48,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:48,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:30:48,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d66c55d3-43cd-40c5-85cb-4d869f7f5820/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:30:48,667 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d66c55d3-43cd-40c5-85cb-4d869f7f5820/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:30:48,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d66c55d3-43cd-40c5-85cb-4d869f7f5820/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 12:30:48,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:30:48,766 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-02 12:30:48,773 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:30:49,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:30:49,026 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:30:49,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-02 12:30:49,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109780117] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:30:49,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1650424389] [2024-11-02 12:30:49,418 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2024-11-02 12:30:49,419 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:30:49,424 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:30:49,430 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:30:49,431 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:30:50,560 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 120 for LOIs [2024-11-02 12:30:50,630 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 142 for LOIs [2024-11-02 12:30:52,582 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 141 for LOIs [2024-11-02 12:30:53,413 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 148 for LOIs [2024-11-02 12:30:53,747 INFO L180 IcfgInterpreter]: Interpretation finished [2024-11-02 12:31:05,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1650424389] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:31:05,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2024-11-02 12:31:05,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [8, 7, 8] total 36 [2024-11-02 12:31:05,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373739567] [2024-11-02 12:31:05,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:31:05,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-02 12:31:05,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:31:05,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-02 12:31:05,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1086, Unknown=0, NotChecked=0, Total=1260 [2024-11-02 12:31:05,789 INFO L87 Difference]: Start difference. First operand 267 states and 336 transitions. Second operand has 22 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 17 states have internal predecessors, (25), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 12:31:12,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:12,598 INFO L93 Difference]: Finished difference Result 547 states and 692 transitions. [2024-11-02 12:31:12,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-02 12:31:12,600 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 17 states have internal predecessors, (25), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 35 [2024-11-02 12:31:12,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:12,608 INFO L225 Difference]: With dead ends: 547 [2024-11-02 12:31:12,609 INFO L226 Difference]: Without dead ends: 344 [2024-11-02 12:31:12,611 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 72 SyntacticMatches, 5 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 16.8s TimeCoverageRelationStatistics Valid=253, Invalid=1817, Unknown=0, NotChecked=0, Total=2070 [2024-11-02 12:31:12,616 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 78 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:31:12,617 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 217 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-02 12:31:12,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2024-11-02 12:31:12,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 327. [2024-11-02 12:31:12,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 225 states have (on average 1.2444444444444445) internal successors, (280), 244 states have internal predecessors, (280), 53 states have call successors, (53), 45 states have call predecessors, (53), 48 states have return successors, (68), 51 states have call predecessors, (68), 53 states have call successors, (68) [2024-11-02 12:31:12,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 401 transitions. [2024-11-02 12:31:12,710 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 401 transitions. Word has length 35 [2024-11-02 12:31:12,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:12,711 INFO L471 AbstractCegarLoop]: Abstraction has 327 states and 401 transitions. [2024-11-02 12:31:12,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 17 states have internal predecessors, (25), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-02 12:31:12,711 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 401 transitions. [2024-11-02 12:31:12,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-02 12:31:12,713 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:12,713 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:31:12,739 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d66c55d3-43cd-40c5-85cb-4d869f7f5820/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-02 12:31:12,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d66c55d3-43cd-40c5-85cb-4d869f7f5820/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:31:12,915 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:31:12,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:12,915 INFO L85 PathProgramCache]: Analyzing trace with hash 469587957, now seen corresponding path program 1 times [2024-11-02 12:31:12,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:12,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500907643] [2024-11-02 12:31:12,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:12,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:31:12,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:13,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:31:13,148 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:31:13,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500907643] [2024-11-02 12:31:13,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500907643] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:31:13,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:31:13,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-02 12:31:13,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567480598] [2024-11-02 12:31:13,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:31:13,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-02 12:31:13,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:31:13,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-02 12:31:13,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-02 12:31:13,152 INFO L87 Difference]: Start difference. First operand 327 states and 401 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 7 states have internal predecessors, (26), 2 states have call successors, (6), 1 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5)