./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product51.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10df1db3-bf3e-4b32-ab70-465fd2221661/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10df1db3-bf3e-4b32-ab70-465fd2221661/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_10df1db3-bf3e-4b32-ab70-465fd2221661/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10df1db3-bf3e-4b32-ab70-465fd2221661/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product51.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10df1db3-bf3e-4b32-ab70-465fd2221661/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_10df1db3-bf3e-4b32-ab70-465fd2221661/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 242c9b24ea8c293cca4af0028144a97f9048375edcd4379fb21e62564563d3d5 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:36:26,412 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:36:26,518 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10df1db3-bf3e-4b32-ab70-465fd2221661/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 12:36:26,528 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:36:26,529 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:36:26,572 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:36:26,573 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:36:26,573 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:36:26,574 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:36:26,574 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:36:26,575 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:36:26,575 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:36:26,576 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:36:26,576 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:36:26,577 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:36:26,577 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:36:26,578 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:36:26,578 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:36:26,579 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:36:26,579 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:36:26,580 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:36:26,584 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:36:26,585 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:36:26,585 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:36:26,586 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:36:26,586 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:36:26,586 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:36:26,587 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:36:26,587 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:36:26,587 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:36:26,588 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:36:26,588 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:36:26,589 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:36:26,589 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:36:26,589 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:36:26,590 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:36:26,590 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:36:26,590 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:36:26,591 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:36:26,591 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:36:26,591 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:36:26,593 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:36:26,593 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:36:26,594 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:36:26,594 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:36:26,595 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:36:26,595 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:36:26,596 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_10df1db3-bf3e-4b32-ab70-465fd2221661/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10df1db3-bf3e-4b32-ab70-465fd2221661/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 242c9b24ea8c293cca4af0028144a97f9048375edcd4379fb21e62564563d3d5 [2024-11-02 12:36:26,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:36:26,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:36:26,949 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:36:26,950 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:36:26,950 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:36:26,952 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10df1db3-bf3e-4b32-ab70-465fd2221661/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/product-lines/minepump_spec2_product51.cil.c Unable to find full path for "g++" [2024-11-02 12:36:29,258 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:36:29,611 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:36:29,612 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10df1db3-bf3e-4b32-ab70-465fd2221661/sv-benchmarks/c/product-lines/minepump_spec2_product51.cil.c [2024-11-02 12:36:29,635 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10df1db3-bf3e-4b32-ab70-465fd2221661/bin/utaipan-verify-DbMuA5NWw2/data/bf3b5b4de/3cddc4a0c3ed4d6fb70ab9beaf82514d/FLAG661b3edff [2024-11-02 12:36:29,659 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10df1db3-bf3e-4b32-ab70-465fd2221661/bin/utaipan-verify-DbMuA5NWw2/data/bf3b5b4de/3cddc4a0c3ed4d6fb70ab9beaf82514d [2024-11-02 12:36:29,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:36:29,666 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:36:29,667 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:36:29,669 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:36:29,674 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:36:29,675 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:36:29" (1/1) ... [2024-11-02 12:36:29,676 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e86a757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:36:29, skipping insertion in model container [2024-11-02 12:36:29,676 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:36:29" (1/1) ... [2024-11-02 12:36:29,733 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:36:30,023 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_10df1db3-bf3e-4b32-ab70-465fd2221661/sv-benchmarks/c/product-lines/minepump_spec2_product51.cil.c[9329,9342] [2024-11-02 12:36:30,115 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:36:30,130 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:36:30,142 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [49] [2024-11-02 12:36:30,144 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [121] [2024-11-02 12:36:30,145 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [343] [2024-11-02 12:36:30,145 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [383] [2024-11-02 12:36:30,145 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [421] [2024-11-02 12:36:30,146 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [525] [2024-11-02 12:36:30,146 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [622] [2024-11-02 12:36:30,147 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [631] [2024-11-02 12:36:30,197 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_10df1db3-bf3e-4b32-ab70-465fd2221661/sv-benchmarks/c/product-lines/minepump_spec2_product51.cil.c[9329,9342] [2024-11-02 12:36:30,244 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:36:30,272 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:36:30,273 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:36:30 WrapperNode [2024-11-02 12:36:30,273 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:36:30,274 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:36:30,275 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:36:30,275 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:36:30,283 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:36:30" (1/1) ... [2024-11-02 12:36:30,302 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:36:30" (1/1) ... [2024-11-02 12:36:30,351 INFO L138 Inliner]: procedures = 57, calls = 101, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 209 [2024-11-02 12:36:30,351 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:36:30,352 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:36:30,352 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:36:30,353 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:36:30,363 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:36:30" (1/1) ... [2024-11-02 12:36:30,364 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:36:30" (1/1) ... [2024-11-02 12:36:30,366 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:36:30" (1/1) ... [2024-11-02 12:36:30,367 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:36:30" (1/1) ... [2024-11-02 12:36:30,372 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:36:30" (1/1) ... [2024-11-02 12:36:30,383 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:36:30" (1/1) ... [2024-11-02 12:36:30,386 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:36:30" (1/1) ... [2024-11-02 12:36:30,387 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:36:30" (1/1) ... [2024-11-02 12:36:30,395 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:36:30,396 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:36:30,396 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:36:30,396 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:36:30,400 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:36:30" (1/1) ... [2024-11-02 12:36:30,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:36:30,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10df1db3-bf3e-4b32-ab70-465fd2221661/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:36:30,446 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10df1db3-bf3e-4b32-ab70-465fd2221661/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:36:30,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10df1db3-bf3e-4b32-ab70-465fd2221661/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:36:30,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:36:30,487 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2024-11-02 12:36:30,487 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2024-11-02 12:36:30,487 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2024-11-02 12:36:30,487 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2024-11-02 12:36:30,488 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-02 12:36:30,488 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-02 12:36:30,488 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-02 12:36:30,488 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-02 12:36:30,488 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2024-11-02 12:36:30,488 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2024-11-02 12:36:30,489 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2024-11-02 12:36:30,489 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2024-11-02 12:36:30,489 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2024-11-02 12:36:30,489 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2024-11-02 12:36:30,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:36:30,489 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2024-11-02 12:36:30,489 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2024-11-02 12:36:30,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:36:30,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:36:30,614 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:36:30,616 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:36:30,960 INFO L? ?]: Removed 45 outVars from TransFormulas that were not future-live. [2024-11-02 12:36:30,960 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:36:31,095 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:36:31,095 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-02 12:36:31,095 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:36:31 BoogieIcfgContainer [2024-11-02 12:36:31,095 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:36:31,101 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:36:31,102 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:36:31,131 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:36:31,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:36:29" (1/3) ... [2024-11-02 12:36:31,132 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@351d14a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:36:31, skipping insertion in model container [2024-11-02 12:36:31,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:36:30" (2/3) ... [2024-11-02 12:36:31,132 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@351d14a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:36:31, skipping insertion in model container [2024-11-02 12:36:31,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:36:31" (3/3) ... [2024-11-02 12:36:31,136 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product51.cil.c [2024-11-02 12:36:31,156 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:36:31,156 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:36:31,245 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:36:31,252 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;@2b16124f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:36:31,253 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:36:31,258 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 41 states have (on average 1.4634146341463414) internal successors, (60), 50 states have internal predecessors, (60), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-02 12:36:31,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-02 12:36:31,268 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:36:31,269 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 12:36:31,269 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:36:31,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:36:31,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1618213275, now seen corresponding path program 1 times [2024-11-02 12:36:31,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:36:31,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464954824] [2024-11-02 12:36:31,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:36:31,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:36:31,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:36:31,475 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 12:36:31,476 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:36:31,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464954824] [2024-11-02 12:36:31,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464954824] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:36:31,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:36:31,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-02 12:36:31,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355587303] [2024-11-02 12:36:31,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:36:31,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-02 12:36:31,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:36:31,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-02 12:36:31,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-02 12:36:31,531 INFO L87 Difference]: Start difference. First operand has 64 states, 41 states have (on average 1.4634146341463414) internal successors, (60), 50 states have internal predecessors, (60), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) 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 12:36:31,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:36:31,624 INFO L93 Difference]: Finished difference Result 126 states and 173 transitions. [2024-11-02 12:36:31,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-02 12:36:31,627 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 12:36:31,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:36:31,638 INFO L225 Difference]: With dead ends: 126 [2024-11-02 12:36:31,638 INFO L226 Difference]: Without dead ends: 59 [2024-11-02 12:36:31,642 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 12:36:31,650 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:36:31,652 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:36:31,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-02 12:36:31,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-11-02 12:36:31,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 38 states have (on average 1.368421052631579) internal successors, (52), 46 states have internal predecessors, (52), 13 states have call successors, (13), 8 states have call predecessors, (13), 7 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-02 12:36:31,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 77 transitions. [2024-11-02 12:36:31,709 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 77 transitions. Word has length 17 [2024-11-02 12:36:31,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:36:31,712 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 77 transitions. [2024-11-02 12:36:31,713 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 12:36:31,714 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 77 transitions. [2024-11-02 12:36:31,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-02 12:36:31,716 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:36:31,716 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 12:36:31,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:36:31,718 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:36:31,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:36:31,721 INFO L85 PathProgramCache]: Analyzing trace with hash -825065917, now seen corresponding path program 1 times [2024-11-02 12:36:31,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:36:31,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492046818] [2024-11-02 12:36:31,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:36:31,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:36:31,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:36:31,901 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 12:36:31,901 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:36:31,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492046818] [2024-11-02 12:36:31,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492046818] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:36:31,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:36:31,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:36:31,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324523482] [2024-11-02 12:36:31,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:36:31,905 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:36:31,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:36:31,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:36:31,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:36:31,909 INFO L87 Difference]: Start difference. First operand 59 states and 77 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 12:36:31,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:36:31,985 INFO L93 Difference]: Finished difference Result 90 states and 116 transitions. [2024-11-02 12:36:31,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:36:31,986 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 12:36:31,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:36:31,988 INFO L225 Difference]: With dead ends: 90 [2024-11-02 12:36:31,990 INFO L226 Difference]: Without dead ends: 51 [2024-11-02 12:36:31,991 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 12:36:31,993 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 14 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:36:31,994 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 87 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:36:31,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-02 12:36:32,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-02 12:36:32,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 33 states have (on average 1.393939393939394) internal successors, (46), 41 states have internal predecessors, (46), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (10), 7 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-02 12:36:32,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2024-11-02 12:36:32,013 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 18 [2024-11-02 12:36:32,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:36:32,013 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2024-11-02 12:36:32,014 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 12:36:32,014 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2024-11-02 12:36:32,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-02 12:36:32,018 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:36:32,018 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] [2024-11-02 12:36:32,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:36:32,019 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:36:32,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:36:32,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1831484829, now seen corresponding path program 1 times [2024-11-02 12:36:32,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:36:32,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627262420] [2024-11-02 12:36:32,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:36:32,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:36:32,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:36:32,155 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 12:36:32,159 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:36:32,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627262420] [2024-11-02 12:36:32,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627262420] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:36:32,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:36:32,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:36:32,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220370218] [2024-11-02 12:36:32,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:36:32,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:36:32,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:36:32,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:36:32,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:36:32,164 INFO L87 Difference]: Start difference. First operand 51 states and 66 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, (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 12:36:32,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:36:32,270 INFO L93 Difference]: Finished difference Result 149 states and 195 transitions. [2024-11-02 12:36:32,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:36:32,270 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, (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 21 [2024-11-02 12:36:32,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:36:32,272 INFO L225 Difference]: With dead ends: 149 [2024-11-02 12:36:32,273 INFO L226 Difference]: Without dead ends: 100 [2024-11-02 12:36:32,274 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 12:36:32,275 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 53 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:36:32,276 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 113 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:36:32,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-02 12:36:32,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 97. [2024-11-02 12:36:32,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 62 states have (on average 1.403225806451613) internal successors, (87), 77 states have internal predecessors, (87), 20 states have call successors, (20), 14 states have call predecessors, (20), 14 states have return successors, (20), 13 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-02 12:36:32,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 127 transitions. [2024-11-02 12:36:32,303 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 127 transitions. Word has length 21 [2024-11-02 12:36:32,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:36:32,304 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 127 transitions. [2024-11-02 12:36:32,304 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, (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 12:36:32,305 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 127 transitions. [2024-11-02 12:36:32,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-02 12:36:32,306 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:36:32,306 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] [2024-11-02 12:36:32,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:36:32,307 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:36:32,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:36:32,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1110346550, now seen corresponding path program 1 times [2024-11-02 12:36:32,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:36:32,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660436604] [2024-11-02 12:36:32,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:36:32,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:36:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:36:32,477 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 12:36:32,477 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:36:32,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660436604] [2024-11-02 12:36:32,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660436604] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:36:32,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:36:32,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:36:32,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089735372] [2024-11-02 12:36:32,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:36:32,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:36:32,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:36:32,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:36:32,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:36:32,481 INFO L87 Difference]: Start difference. First operand 97 states and 127 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:36:32,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:36:32,625 INFO L93 Difference]: Finished difference Result 262 states and 351 transitions. [2024-11-02 12:36:32,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:36:32,626 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2024-11-02 12:36:32,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:36:32,628 INFO L225 Difference]: With dead ends: 262 [2024-11-02 12:36:32,632 INFO L226 Difference]: Without dead ends: 167 [2024-11-02 12:36:32,633 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:36:32,634 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 33 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:36:32,638 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 146 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:36:32,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-02 12:36:32,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 166. [2024-11-02 12:36:32,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 111 states have (on average 1.3243243243243243) internal successors, (147), 126 states have internal predecessors, (147), 28 states have call successors, (28), 26 states have call predecessors, (28), 26 states have return successors, (36), 25 states have call predecessors, (36), 28 states have call successors, (36) [2024-11-02 12:36:32,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 211 transitions. [2024-11-02 12:36:32,686 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 211 transitions. Word has length 24 [2024-11-02 12:36:32,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:36:32,687 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 211 transitions. [2024-11-02 12:36:32,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-02 12:36:32,688 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 211 transitions. [2024-11-02 12:36:32,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-02 12:36:32,689 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:36:32,689 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] [2024-11-02 12:36:32,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 12:36:32,690 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:36:32,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:36:32,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1136750185, now seen corresponding path program 1 times [2024-11-02 12:36:32,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:36:32,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146265276] [2024-11-02 12:36:32,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:36:32,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:36:32,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:36:32,780 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 12:36:32,780 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:36:32,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146265276] [2024-11-02 12:36:32,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146265276] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:36:32,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:36:32,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:36:32,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597016528] [2024-11-02 12:36:32,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:36:32,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:36:32,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:36:32,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:36:32,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-02 12:36:32,783 INFO L87 Difference]: Start difference. First operand 166 states and 211 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 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) [2024-11-02 12:36:32,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:36:32,880 INFO L93 Difference]: Finished difference Result 293 states and 382 transitions. [2024-11-02 12:36:32,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:36:32,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 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 29 [2024-11-02 12:36:32,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:36:32,884 INFO L225 Difference]: With dead ends: 293 [2024-11-02 12:36:32,884 INFO L226 Difference]: Without dead ends: 291 [2024-11-02 12:36:32,885 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 12:36:32,886 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 42 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:36:32,887 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 100 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:36:32,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-11-02 12:36:32,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 275. [2024-11-02 12:36:32,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 181 states have (on average 1.3314917127071824) internal successors, (241), 208 states have internal predecessors, (241), 49 states have call successors, (49), 45 states have call predecessors, (49), 44 states have return successors, (71), 40 states have call predecessors, (71), 49 states have call successors, (71) [2024-11-02 12:36:32,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 361 transitions. [2024-11-02 12:36:32,928 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 361 transitions. Word has length 29 [2024-11-02 12:36:32,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:36:32,929 INFO L471 AbstractCegarLoop]: Abstraction has 275 states and 361 transitions. [2024-11-02 12:36:32,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 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) [2024-11-02 12:36:32,929 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 361 transitions. [2024-11-02 12:36:32,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-02 12:36:32,932 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:36:32,933 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:36:32,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-02 12:36:32,933 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:36:32,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:36:32,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1496247439, now seen corresponding path program 1 times [2024-11-02 12:36:32,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:36:32,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915784876] [2024-11-02 12:36:32,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:36:32,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:36:32,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:36:33,023 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-02 12:36:33,024 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:36:33,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915784876] [2024-11-02 12:36:33,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915784876] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:36:33,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:36:33,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-02 12:36:33,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353687556] [2024-11-02 12:36:33,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:36:33,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-02 12:36:33,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:36:33,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-02 12:36:33,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:36:33,026 INFO L87 Difference]: Start difference. First operand 275 states and 361 transitions. Second operand has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 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) [2024-11-02 12:36:33,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:36:33,184 INFO L93 Difference]: Finished difference Result 311 states and 410 transitions. [2024-11-02 12:36:33,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-02 12:36:33,186 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 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 52 [2024-11-02 12:36:33,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:36:33,188 INFO L225 Difference]: With dead ends: 311 [2024-11-02 12:36:33,190 INFO L226 Difference]: Without dead ends: 132 [2024-11-02 12:36:33,192 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-02 12:36:33,193 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 84 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:36:33,197 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 120 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-02 12:36:33,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-02 12:36:33,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 129. [2024-11-02 12:36:33,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 86 states have (on average 1.2674418604651163) internal successors, (109), 97 states have internal predecessors, (109), 21 states have call successors, (21), 21 states have call predecessors, (21), 21 states have return successors, (31), 19 states have call predecessors, (31), 21 states have call successors, (31) [2024-11-02 12:36:33,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 161 transitions. [2024-11-02 12:36:33,234 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 161 transitions. Word has length 52 [2024-11-02 12:36:33,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:36:33,235 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 161 transitions. [2024-11-02 12:36:33,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.0) internal successors, (42), 4 states have internal predecessors, (42), 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) [2024-11-02 12:36:33,236 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 161 transitions. [2024-11-02 12:36:33,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-02 12:36:33,242 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:36:33,242 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:36:33,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-02 12:36:33,242 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:36:33,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:36:33,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1683442576, now seen corresponding path program 1 times [2024-11-02 12:36:33,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:36:33,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091172973] [2024-11-02 12:36:33,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:36:33,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:36:33,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:36:33,447 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-02 12:36:33,447 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:36:33,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091172973] [2024-11-02 12:36:33,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091172973] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:36:33,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861239566] [2024-11-02 12:36:33,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:36:33,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:36:33,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10df1db3-bf3e-4b32-ab70-465fd2221661/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:36:33,451 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10df1db3-bf3e-4b32-ab70-465fd2221661/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:36:33,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10df1db3-bf3e-4b32-ab70-465fd2221661/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-02 12:36:33,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:36:33,571 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-02 12:36:33,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:36:33,717 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:36:33,718 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:36:33,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861239566] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:36:33,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 12:36:33,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-02 12:36:33,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807113028] [2024-11-02 12:36:33,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:36:33,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-02 12:36:33,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:36:33,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-02 12:36:33,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-02 12:36:33,723 INFO L87 Difference]: Start difference. First operand 129 states and 161 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-02 12:36:33,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:36:33,792 INFO L93 Difference]: Finished difference Result 247 states and 317 transitions. [2024-11-02 12:36:33,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-02 12:36:33,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 57 [2024-11-02 12:36:33,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:36:33,794 INFO L225 Difference]: With dead ends: 247 [2024-11-02 12:36:33,794 INFO L226 Difference]: Without dead ends: 120 [2024-11-02 12:36:33,795 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-02 12:36:33,796 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 25 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-02 12:36:33,797 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 98 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-02 12:36:33,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-02 12:36:33,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2024-11-02 12:36:33,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 81 states have (on average 1.2222222222222223) internal successors, (99), 90 states have internal predecessors, (99), 19 states have call successors, (19), 19 states have call predecessors, (19), 19 states have return successors, (26), 18 states have call predecessors, (26), 19 states have call successors, (26) [2024-11-02 12:36:33,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 144 transitions. [2024-11-02 12:36:33,814 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 144 transitions. Word has length 57 [2024-11-02 12:36:33,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:36:33,815 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 144 transitions. [2024-11-02 12:36:33,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-02 12:36:33,815 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 144 transitions. [2024-11-02 12:36:33,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-02 12:36:33,817 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:36:33,817 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:36:33,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10df1db3-bf3e-4b32-ab70-465fd2221661/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-02 12:36:34,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10df1db3-bf3e-4b32-ab70-465fd2221661/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:36:34,018 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:36:34,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:36:34,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1688237614, now seen corresponding path program 1 times [2024-11-02 12:36:34,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:36:34,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636246506] [2024-11-02 12:36:34,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:36:34,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:36:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:36:34,518 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-02 12:36:34,519 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:36:34,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636246506] [2024-11-02 12:36:34,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636246506] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:36:34,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570231513] [2024-11-02 12:36:34,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:36:34,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:36:34,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10df1db3-bf3e-4b32-ab70-465fd2221661/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:36:34,522 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10df1db3-bf3e-4b32-ab70-465fd2221661/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:36:34,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10df1db3-bf3e-4b32-ab70-465fd2221661/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-02 12:36:34,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:36:34,620 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-02 12:36:34,623 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:36:35,023 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:36:35,023 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-02 12:36:35,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570231513] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:36:35,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-02 12:36:35,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 14 [2024-11-02 12:36:35,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134262130] [2024-11-02 12:36:35,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:36:35,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-02 12:36:35,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:36:35,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-02 12:36:35,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-11-02 12:36:35,031 INFO L87 Difference]: Start difference. First operand 120 states and 144 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 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) [2024-11-02 12:36:35,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:36:35,465 INFO L93 Difference]: Finished difference Result 316 states and 385 transitions. [2024-11-02 12:36:35,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-02 12:36:35,466 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 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 60 [2024-11-02 12:36:35,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:36:35,468 INFO L225 Difference]: With dead ends: 316 [2024-11-02 12:36:35,468 INFO L226 Difference]: Without dead ends: 198 [2024-11-02 12:36:35,469 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2024-11-02 12:36:35,470 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 112 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-02 12:36:35,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 190 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-02 12:36:35,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-02 12:36:35,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 164. [2024-11-02 12:36:35,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 113 states have (on average 1.2123893805309736) internal successors, (137), 123 states have internal predecessors, (137), 24 states have call successors, (24), 24 states have call predecessors, (24), 26 states have return successors, (31), 24 states have call predecessors, (31), 24 states have call successors, (31) [2024-11-02 12:36:35,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 192 transitions. [2024-11-02 12:36:35,500 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 192 transitions. Word has length 60 [2024-11-02 12:36:35,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:36:35,500 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 192 transitions. [2024-11-02 12:36:35,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 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) [2024-11-02 12:36:35,501 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 192 transitions. [2024-11-02 12:36:35,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-02 12:36:35,502 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:36:35,502 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:36:35,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10df1db3-bf3e-4b32-ab70-465fd2221661/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-02 12:36:35,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10df1db3-bf3e-4b32-ab70-465fd2221661/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:36:35,704 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:36:35,705 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:36:35,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1714659913, now seen corresponding path program 1 times [2024-11-02 12:36:35,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:36:35,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060457720] [2024-11-02 12:36:35,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:36:35,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:36:35,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:36:36,409 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-02 12:36:36,410 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:36:36,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060457720] [2024-11-02 12:36:36,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060457720] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-02 12:36:36,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755997737] [2024-11-02 12:36:36,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:36:36,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-02 12:36:36,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10df1db3-bf3e-4b32-ab70-465fd2221661/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:36:36,413 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10df1db3-bf3e-4b32-ab70-465fd2221661/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-02 12:36:36,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10df1db3-bf3e-4b32-ab70-465fd2221661/bin/utaipan-verify-DbMuA5NWw2/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-02 12:36:36,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:36:36,517 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-02 12:36:36,522 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-02 12:36:36,900 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:36:36,900 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-02 12:36:37,433 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-02 12:36:37,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755997737] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-02 12:36:37,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [569358495] [2024-11-02 12:36:37,455 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2024-11-02 12:36:37,456 INFO L166 IcfgInterpreter]: Building call graph [2024-11-02 12:36:37,459 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-02 12:36:37,465 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-02 12:36:37,466 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-02 12:36:43,119 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 133 for LOIs [2024-11-02 12:36:43,237 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 144 for LOIs [2024-11-02 12:36:46,509 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 142 for LOIs [2024-11-02 12:36:46,870 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 141 for LOIs [2024-11-02 12:36:47,023 INFO L180 IcfgInterpreter]: Interpretation finished