./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product45.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 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_39b3a2d1-66c1-4608-b641-295c755082b4/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b3a2d1-66c1-4608-b641-295c755082b4/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b3a2d1-66c1-4608-b641-295c755082b4/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b3a2d1-66c1-4608-b641-295c755082b4/bin/utaipan-verify-QoSU8krkJ5/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product45.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b3a2d1-66c1-4608-b641-295c755082b4/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b3a2d1-66c1-4608-b641-295c755082b4/bin/utaipan-verify-QoSU8krkJ5 --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 69f20c6619059452dea710c235d91f0e8ca980fcacc48c7e37668ab8a6397c50 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:51:39,202 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:51:39,349 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b3a2d1-66c1-4608-b641-295c755082b4/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-21 19:51:39,355 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:51:39,356 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:51:39,401 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:51:39,402 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:51:39,402 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:51:39,404 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:51:39,409 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:51:39,410 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:51:39,410 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:51:39,411 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:51:39,413 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 19:51:39,413 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:51:39,414 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:51:39,414 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 19:51:39,415 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 19:51:39,415 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:51:39,416 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 19:51:39,416 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 19:51:39,417 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 19:51:39,418 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:51:39,419 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 19:51:39,419 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 19:51:39,420 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:51:39,420 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 19:51:39,421 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:51:39,421 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 19:51:39,422 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:51:39,423 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 19:51:39,423 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 19:51:39,424 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 19:51:39,424 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:51:39,424 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:51:39,425 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:51:39,425 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:51:39,426 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:51:39,426 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:51:39,426 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:51:39,427 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 19:51:39,427 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 19:51:39,427 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 19:51:39,427 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:51:39,428 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 19:51:39,428 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:51:39,429 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:51:39,429 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_39b3a2d1-66c1-4608-b641-295c755082b4/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b3a2d1-66c1-4608-b641-295c755082b4/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69f20c6619059452dea710c235d91f0e8ca980fcacc48c7e37668ab8a6397c50 [2023-11-21 19:51:39,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:51:39,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:51:39,887 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:51:39,891 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:51:39,891 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:51:39,893 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b3a2d1-66c1-4608-b641-295c755082b4/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/product-lines/minepump_spec2_product45.cil.c [2023-11-21 19:51:43,261 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:51:43,551 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:51:43,551 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b3a2d1-66c1-4608-b641-295c755082b4/sv-benchmarks/c/product-lines/minepump_spec2_product45.cil.c [2023-11-21 19:51:43,568 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b3a2d1-66c1-4608-b641-295c755082b4/bin/utaipan-verify-QoSU8krkJ5/data/f85dc1bea/8d3a68bcda84451ba7d8cce67dc88025/FLAG50f65dea4 [2023-11-21 19:51:43,584 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b3a2d1-66c1-4608-b641-295c755082b4/bin/utaipan-verify-QoSU8krkJ5/data/f85dc1bea/8d3a68bcda84451ba7d8cce67dc88025 [2023-11-21 19:51:43,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:51:43,588 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:51:43,590 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:51:43,590 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:51:43,596 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:51:43,597 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:51:43" (1/1) ... [2023-11-21 19:51:43,599 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@381b0fe1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:51:43, skipping insertion in model container [2023-11-21 19:51:43,599 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:51:43" (1/1) ... [2023-11-21 19:51:43,648 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:51:44,008 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b3a2d1-66c1-4608-b641-295c755082b4/sv-benchmarks/c/product-lines/minepump_spec2_product45.cil.c[11292,11305] [2023-11-21 19:51:44,136 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:51:44,156 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:51:44,170 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [49] [2023-11-21 19:51:44,172 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [415] [2023-11-21 19:51:44,173 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [424] [2023-11-21 19:51:44,173 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [530] [2023-11-21 19:51:44,173 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [733] [2023-11-21 19:51:44,174 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [798] [2023-11-21 19:51:44,174 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [893] [2023-11-21 19:51:44,174 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [928] [2023-11-21 19:51:44,249 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b3a2d1-66c1-4608-b641-295c755082b4/sv-benchmarks/c/product-lines/minepump_spec2_product45.cil.c[11292,11305] [2023-11-21 19:51:44,270 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:51:44,298 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:51:44,298 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:51:44 WrapperNode [2023-11-21 19:51:44,298 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:51:44,300 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:51:44,300 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:51:44,300 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:51:44,309 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:51:44" (1/1) ... [2023-11-21 19:51:44,342 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:51:44" (1/1) ... [2023-11-21 19:51:44,391 INFO L138 Inliner]: procedures = 55, calls = 100, calls flagged for inlining = 22, calls inlined = 19, statements flattened = 193 [2023-11-21 19:51:44,392 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:51:44,393 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:51:44,393 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:51:44,393 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:51:44,406 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:51:44" (1/1) ... [2023-11-21 19:51:44,407 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:51:44" (1/1) ... [2023-11-21 19:51:44,414 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:51:44" (1/1) ... [2023-11-21 19:51:44,427 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:51:44" (1/1) ... [2023-11-21 19:51:44,435 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:51:44" (1/1) ... [2023-11-21 19:51:44,440 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:51:44" (1/1) ... [2023-11-21 19:51:44,443 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:51:44" (1/1) ... [2023-11-21 19:51:44,445 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:51:44" (1/1) ... [2023-11-21 19:51:44,449 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:51:44,450 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:51:44,450 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:51:44,451 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:51:44,452 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:51:44" (1/1) ... [2023-11-21 19:51:44,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:51:44,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b3a2d1-66c1-4608-b641-295c755082b4/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:51:44,509 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b3a2d1-66c1-4608-b641-295c755082b4/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:51:44,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b3a2d1-66c1-4608-b641-295c755082b4/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:51:44,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:51:44,573 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-11-21 19:51:44,573 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-11-21 19:51:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-11-21 19:51:44,574 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-11-21 19:51:44,574 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-21 19:51:44,574 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-21 19:51:44,575 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-21 19:51:44,576 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-21 19:51:44,576 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-11-21 19:51:44,577 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-11-21 19:51:44,577 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2023-11-21 19:51:44,578 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2023-11-21 19:51:44,579 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-11-21 19:51:44,580 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-11-21 19:51:44,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 19:51:44,581 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-11-21 19:51:44,582 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-11-21 19:51:44,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:51:44,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:51:44,712 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:51:44,715 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:51:45,138 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:51:45,302 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:51:45,303 INFO L308 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-21 19:51:45,305 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:51:45 BoogieIcfgContainer [2023-11-21 19:51:45,305 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:51:45,308 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:51:45,308 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:51:45,316 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:51:45,316 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:51:43" (1/3) ... [2023-11-21 19:51:45,317 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40bba279 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:51:45, skipping insertion in model container [2023-11-21 19:51:45,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:51:44" (2/3) ... [2023-11-21 19:51:45,318 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40bba279 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:51:45, skipping insertion in model container [2023-11-21 19:51:45,318 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:51:45" (3/3) ... [2023-11-21 19:51:45,320 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product45.cil.c [2023-11-21 19:51:45,344 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:51:45,344 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 19:51:45,417 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:51:45,427 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@543338c8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:51:45,434 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 19:51:45,440 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 40 states have (on average 1.4) internal successors, (56), 48 states have internal predecessors, (56), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-21 19:51:45,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-21 19:51:45,453 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:51:45,454 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:51:45,454 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:51:45,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:51:45,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1166839342, now seen corresponding path program 1 times [2023-11-21 19:51:45,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:51:45,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006573236] [2023-11-21 19:51:45,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:51:45,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:51:45,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:51:45,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:51:45,783 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:51:45,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006573236] [2023-11-21 19:51:45,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006573236] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:51:45,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:51:45,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:51:45,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5727917] [2023-11-21 19:51:45,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:51:45,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-21 19:51:45,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:51:45,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-21 19:51:45,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-21 19:51:45,859 INFO L87 Difference]: Start difference. First operand has 64 states, 40 states have (on average 1.4) internal successors, (56), 48 states have internal predecessors, (56), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:51:45,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:51:45,997 INFO L93 Difference]: Finished difference Result 126 states and 169 transitions. [2023-11-21 19:51:45,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 19:51:46,000 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-11-21 19:51:46,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:51:46,016 INFO L225 Difference]: With dead ends: 126 [2023-11-21 19:51:46,017 INFO L226 Difference]: Without dead ends: 59 [2023-11-21 19:51:46,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-21 19:51:46,028 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 64 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 [2023-11-21 19:51:46,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 64 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:51:46,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-21 19:51:46,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-11-21 19:51:46,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 44 states have internal predecessors, (48), 14 states have call successors, (14), 8 states have call predecessors, (14), 7 states have return successors, (13), 11 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-21 19:51:46,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 75 transitions. [2023-11-21 19:51:46,093 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 75 transitions. Word has length 17 [2023-11-21 19:51:46,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:51:46,095 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 75 transitions. [2023-11-21 19:51:46,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:51:46,097 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 75 transitions. [2023-11-21 19:51:46,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-21 19:51:46,108 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:51:46,109 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:51:46,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 19:51:46,110 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:51:46,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:51:46,111 INFO L85 PathProgramCache]: Analyzing trace with hash -96225509, now seen corresponding path program 1 times [2023-11-21 19:51:46,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:51:46,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626653282] [2023-11-21 19:51:46,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:51:46,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:51:46,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:51:46,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:51:46,311 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:51:46,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626653282] [2023-11-21 19:51:46,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626653282] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:51:46,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:51:46,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:51:46,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280594542] [2023-11-21 19:51:46,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:51:46,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:51:46,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:51:46,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:51:46,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:51:46,315 INFO L87 Difference]: Start difference. First operand 59 states and 75 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:51:46,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:51:46,365 INFO L93 Difference]: Finished difference Result 95 states and 121 transitions. [2023-11-21 19:51:46,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:51:46,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2023-11-21 19:51:46,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:51:46,368 INFO L225 Difference]: With dead ends: 95 [2023-11-21 19:51:46,368 INFO L226 Difference]: Without dead ends: 51 [2023-11-21 19:51:46,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:51:46,371 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 7 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:51:46,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 91 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 19:51:46,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-21 19:51:46,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-11-21 19:51:46,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 32 states have (on average 1.3125) internal successors, (42), 39 states have internal predecessors, (42), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-21 19:51:46,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2023-11-21 19:51:46,385 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 18 [2023-11-21 19:51:46,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:51:46,389 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2023-11-21 19:51:46,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:51:46,389 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2023-11-21 19:51:46,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-21 19:51:46,391 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:51:46,391 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:51:46,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 19:51:46,392 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:51:46,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:51:46,393 INFO L85 PathProgramCache]: Analyzing trace with hash -119039979, now seen corresponding path program 1 times [2023-11-21 19:51:46,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:51:46,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009449382] [2023-11-21 19:51:46,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:51:46,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:51:46,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:51:46,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:51:46,555 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:51:46,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009449382] [2023-11-21 19:51:46,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009449382] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:51:46,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:51:46,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:51:46,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279478525] [2023-11-21 19:51:46,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:51:46,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:51:46,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:51:46,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:51:46,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:51:46,559 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:51:46,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:51:46,606 INFO L93 Difference]: Finished difference Result 100 states and 127 transitions. [2023-11-21 19:51:46,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:51:46,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2023-11-21 19:51:46,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:51:46,609 INFO L225 Difference]: With dead ends: 100 [2023-11-21 19:51:46,609 INFO L226 Difference]: Without dead ends: 51 [2023-11-21 19:51:46,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:51:46,613 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 53 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:51:46,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 48 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 19:51:46,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-11-21 19:51:46,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-11-21 19:51:46,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 32 states have (on average 1.28125) internal successors, (41), 39 states have internal predecessors, (41), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-21 19:51:46,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2023-11-21 19:51:46,636 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 20 [2023-11-21 19:51:46,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:51:46,637 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2023-11-21 19:51:46,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 19:51:46,637 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2023-11-21 19:51:46,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-21 19:51:46,642 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:51:46,642 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:51:46,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 19:51:46,643 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:51:46,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:51:46,644 INFO L85 PathProgramCache]: Analyzing trace with hash -109316668, now seen corresponding path program 1 times [2023-11-21 19:51:46,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:51:46,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967089444] [2023-11-21 19:51:46,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:51:46,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:51:46,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:51:46,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:51:46,897 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:51:46,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967089444] [2023-11-21 19:51:46,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967089444] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:51:46,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:51:46,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 19:51:46,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931887761] [2023-11-21 19:51:46,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:51:46,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 19:51:46,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:51:46,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 19:51:46,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:51:46,902 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-21 19:51:47,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:51:47,199 INFO L93 Difference]: Finished difference Result 165 states and 204 transitions. [2023-11-21 19:51:47,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 19:51:47,200 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 30 [2023-11-21 19:51:47,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:51:47,203 INFO L225 Difference]: With dead ends: 165 [2023-11-21 19:51:47,204 INFO L226 Difference]: Without dead ends: 116 [2023-11-21 19:51:47,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-21 19:51:47,207 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 116 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 19:51:47,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 157 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 19:51:47,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-11-21 19:51:47,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 110. [2023-11-21 19:51:47,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 73 states have (on average 1.2602739726027397) internal successors, (92), 80 states have internal predecessors, (92), 18 states have call successors, (18), 15 states have call predecessors, (18), 18 states have return successors, (23), 19 states have call predecessors, (23), 18 states have call successors, (23) [2023-11-21 19:51:47,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 133 transitions. [2023-11-21 19:51:47,243 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 133 transitions. Word has length 30 [2023-11-21 19:51:47,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:51:47,244 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 133 transitions. [2023-11-21 19:51:47,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-21 19:51:47,245 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 133 transitions. [2023-11-21 19:51:47,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-21 19:51:47,246 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:51:47,247 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:51:47,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 19:51:47,247 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:51:47,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:51:47,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1491613400, now seen corresponding path program 1 times [2023-11-21 19:51:47,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:51:47,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183788942] [2023-11-21 19:51:47,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:51:47,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:51:47,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:51:47,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:51:47,416 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:51:47,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183788942] [2023-11-21 19:51:47,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183788942] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:51:47,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:51:47,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 19:51:47,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044060758] [2023-11-21 19:51:47,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:51:47,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 19:51:47,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:51:47,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 19:51:47,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:51:47,420 INFO L87 Difference]: Start difference. First operand 110 states and 133 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-21 19:51:47,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:51:47,663 INFO L93 Difference]: Finished difference Result 222 states and 268 transitions. [2023-11-21 19:51:47,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 19:51:47,664 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2023-11-21 19:51:47,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:51:47,666 INFO L225 Difference]: With dead ends: 222 [2023-11-21 19:51:47,667 INFO L226 Difference]: Without dead ends: 114 [2023-11-21 19:51:47,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-21 19:51:47,670 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 67 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 19:51:47,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 132 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 19:51:47,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-11-21 19:51:47,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 108. [2023-11-21 19:51:47,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 71 states have (on average 1.2112676056338028) internal successors, (86), 78 states have internal predecessors, (86), 18 states have call successors, (18), 15 states have call predecessors, (18), 18 states have return successors, (23), 19 states have call predecessors, (23), 18 states have call successors, (23) [2023-11-21 19:51:47,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 127 transitions. [2023-11-21 19:51:47,695 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 127 transitions. Word has length 31 [2023-11-21 19:51:47,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:51:47,696 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 127 transitions. [2023-11-21 19:51:47,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-21 19:51:47,697 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 127 transitions. [2023-11-21 19:51:47,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-21 19:51:47,699 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:51:47,699 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:51:47,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 19:51:47,700 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:51:47,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:51:47,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1562186421, now seen corresponding path program 1 times [2023-11-21 19:51:47,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:51:47,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394653371] [2023-11-21 19:51:47,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:51:47,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:51:47,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:51:48,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 19:51:48,132 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:51:48,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394653371] [2023-11-21 19:51:48,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394653371] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:51:48,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:51:48,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 19:51:48,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011739235] [2023-11-21 19:51:48,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:51:48,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 19:51:48,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:51:48,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 19:51:48,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-21 19:51:48,138 INFO L87 Difference]: Start difference. First operand 108 states and 127 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-21 19:51:48,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:51:48,418 INFO L93 Difference]: Finished difference Result 274 states and 326 transitions. [2023-11-21 19:51:48,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 19:51:48,419 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 36 [2023-11-21 19:51:48,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:51:48,430 INFO L225 Difference]: With dead ends: 274 [2023-11-21 19:51:48,430 INFO L226 Difference]: Without dead ends: 168 [2023-11-21 19:51:48,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-21 19:51:48,438 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 89 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 19:51:48,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 191 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 19:51:48,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-11-21 19:51:48,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 142. [2023-11-21 19:51:48,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 94 states have (on average 1.1914893617021276) internal successors, (112), 102 states have internal predecessors, (112), 23 states have call successors, (23), 21 states have call predecessors, (23), 24 states have return successors, (28), 24 states have call predecessors, (28), 23 states have call successors, (28) [2023-11-21 19:51:48,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 163 transitions. [2023-11-21 19:51:48,480 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 163 transitions. Word has length 36 [2023-11-21 19:51:48,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:51:48,480 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 163 transitions. [2023-11-21 19:51:48,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-21 19:51:48,481 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 163 transitions. [2023-11-21 19:51:48,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-21 19:51:48,489 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:51:48,489 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:51:48,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 19:51:48,490 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:51:48,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:51:48,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1113926448, now seen corresponding path program 1 times [2023-11-21 19:51:48,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:51:48,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69652648] [2023-11-21 19:51:48,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:51:48,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:51:48,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:51:48,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 19:51:48,602 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:51:48,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69652648] [2023-11-21 19:51:48,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69652648] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:51:48,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:51:48,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:51:48,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188126385] [2023-11-21 19:51:48,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:51:48,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:51:48,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:51:48,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:51:48,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:51:48,606 INFO L87 Difference]: Start difference. First operand 142 states and 163 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-21 19:51:48,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:51:48,701 INFO L93 Difference]: Finished difference Result 230 states and 272 transitions. [2023-11-21 19:51:48,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:51:48,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 39 [2023-11-21 19:51:48,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:51:48,706 INFO L225 Difference]: With dead ends: 230 [2023-11-21 19:51:48,706 INFO L226 Difference]: Without dead ends: 228 [2023-11-21 19:51:48,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:51:48,707 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 39 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 93 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 [2023-11-21 19:51:48,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 93 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:51:48,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2023-11-21 19:51:48,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 214. [2023-11-21 19:51:48,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 139 states have (on average 1.1942446043165467) internal successors, (166), 151 states have internal predecessors, (166), 36 states have call successors, (36), 33 states have call predecessors, (36), 38 states have return successors, (50), 37 states have call predecessors, (50), 36 states have call successors, (50) [2023-11-21 19:51:48,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 252 transitions. [2023-11-21 19:51:48,763 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 252 transitions. Word has length 39 [2023-11-21 19:51:48,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:51:48,764 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 252 transitions. [2023-11-21 19:51:48,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-21 19:51:48,764 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 252 transitions. [2023-11-21 19:51:48,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-21 19:51:48,774 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:51:48,775 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:51:48,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 19:51:48,776 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:51:48,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:51:48,776 INFO L85 PathProgramCache]: Analyzing trace with hash 237793121, now seen corresponding path program 1 times [2023-11-21 19:51:48,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:51:48,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294259408] [2023-11-21 19:51:48,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:51:48,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:51:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:51:48,976 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-21 19:51:48,977 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:51:48,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294259408] [2023-11-21 19:51:48,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294259408] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:51:48,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:51:48,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 19:51:48,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232995755] [2023-11-21 19:51:48,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:51:48,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:51:48,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:51:48,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:51:48,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:51:48,980 INFO L87 Difference]: Start difference. First operand 214 states and 252 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-21 19:51:49,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:51:49,139 INFO L93 Difference]: Finished difference Result 387 states and 465 transitions. [2023-11-21 19:51:49,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 19:51:49,140 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2023-11-21 19:51:49,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:51:49,143 INFO L225 Difference]: With dead ends: 387 [2023-11-21 19:51:49,143 INFO L226 Difference]: Without dead ends: 207 [2023-11-21 19:51:49,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:51:49,146 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 40 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:51:49,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 156 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:51:49,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-11-21 19:51:49,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 202. [2023-11-21 19:51:49,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 133 states have (on average 1.1804511278195489) internal successors, (157), 145 states have internal predecessors, (157), 34 states have call successors, (34), 31 states have call predecessors, (34), 34 states have return successors, (46), 35 states have call predecessors, (46), 34 states have call successors, (46) [2023-11-21 19:51:49,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 237 transitions. [2023-11-21 19:51:49,203 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 237 transitions. Word has length 74 [2023-11-21 19:51:49,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:51:49,204 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 237 transitions. [2023-11-21 19:51:49,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-21 19:51:49,205 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 237 transitions. [2023-11-21 19:51:49,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-21 19:51:49,207 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:51:49,207 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:51:49,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 19:51:49,208 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:51:49,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:51:49,209 INFO L85 PathProgramCache]: Analyzing trace with hash -173607858, now seen corresponding path program 1 times [2023-11-21 19:51:49,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:51:49,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105988800] [2023-11-21 19:51:49,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:51:49,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:51:49,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:51:49,484 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-21 19:51:49,484 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:51:49,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105988800] [2023-11-21 19:51:49,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105988800] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:51:49,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093999002] [2023-11-21 19:51:49,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:51:49,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:51:49,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b3a2d1-66c1-4608-b641-295c755082b4/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:51:49,492 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b3a2d1-66c1-4608-b641-295c755082b4/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:51:49,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b3a2d1-66c1-4608-b641-295c755082b4/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 19:51:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:51:49,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-21 19:51:49,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:51:49,833 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-21 19:51:49,836 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:51:49,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093999002] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:51:49,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:51:49,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 14 [2023-11-21 19:51:49,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407235038] [2023-11-21 19:51:49,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:51:49,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 19:51:49,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:51:49,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 19:51:49,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-11-21 19:51:49,841 INFO L87 Difference]: Start difference. First operand 202 states and 237 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-21 19:51:50,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:51:50,016 INFO L93 Difference]: Finished difference Result 545 states and 654 transitions. [2023-11-21 19:51:50,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 19:51:50,017 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 77 [2023-11-21 19:51:50,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:51:50,022 INFO L225 Difference]: With dead ends: 545 [2023-11-21 19:51:50,022 INFO L226 Difference]: Without dead ends: 345 [2023-11-21 19:51:50,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-11-21 19:51:50,024 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 21 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:51:50,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 173 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:51:50,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2023-11-21 19:51:50,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 337. [2023-11-21 19:51:50,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 224 states have (on average 1.15625) internal successors, (259), 240 states have internal predecessors, (259), 56 states have call successors, (56), 51 states have call predecessors, (56), 56 states have return successors, (74), 58 states have call predecessors, (74), 56 states have call successors, (74) [2023-11-21 19:51:50,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 389 transitions. [2023-11-21 19:51:50,074 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 389 transitions. Word has length 77 [2023-11-21 19:51:50,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:51:50,075 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 389 transitions. [2023-11-21 19:51:50,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-21 19:51:50,076 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 389 transitions. [2023-11-21 19:51:50,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-21 19:51:50,078 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:51:50,079 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:51:50,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b3a2d1-66c1-4608-b641-295c755082b4/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-21 19:51:50,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b3a2d1-66c1-4608-b641-295c755082b4/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:51:50,298 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:51:50,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:51:50,298 INFO L85 PathProgramCache]: Analyzing trace with hash -137167235, now seen corresponding path program 1 times [2023-11-21 19:51:50,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:51:50,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987590708] [2023-11-21 19:51:50,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:51:50,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:51:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:51:50,769 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-21 19:51:50,769 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:51:50,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987590708] [2023-11-21 19:51:50,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987590708] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:51:50,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115546214] [2023-11-21 19:51:50,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:51:50,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:51:50,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b3a2d1-66c1-4608-b641-295c755082b4/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:51:50,772 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b3a2d1-66c1-4608-b641-295c755082b4/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:51:50,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b3a2d1-66c1-4608-b641-295c755082b4/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 19:51:50,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:51:50,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-21 19:51:50,935 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:51:51,163 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 19:51:51,163 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:51:51,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115546214] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:51:51,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:51:51,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [15] total 20 [2023-11-21 19:51:51,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381067568] [2023-11-21 19:51:51,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:51:51,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-21 19:51:51,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:51:51,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-21 19:51:51,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2023-11-21 19:51:51,167 INFO L87 Difference]: Start difference. First operand 337 states and 389 transitions. Second operand has 11 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 3 states have call successors, (13), 3 states have call predecessors, (13), 6 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-21 19:51:51,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:51:51,446 INFO L93 Difference]: Finished difference Result 681 states and 819 transitions. [2023-11-21 19:51:51,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-21 19:51:51,447 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 3 states have call successors, (13), 3 states have call predecessors, (13), 6 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) Word has length 80 [2023-11-21 19:51:51,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:51:51,458 INFO L225 Difference]: With dead ends: 681 [2023-11-21 19:51:51,459 INFO L226 Difference]: Without dead ends: 481 [2023-11-21 19:51:51,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=486, Unknown=0, NotChecked=0, Total=552 [2023-11-21 19:51:51,461 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 35 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 19:51:51,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 513 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 19:51:51,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2023-11-21 19:51:51,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 459. [2023-11-21 19:51:51,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 307 states have (on average 1.1465798045602607) internal successors, (352), 326 states have internal predecessors, (352), 75 states have call successors, (75), 69 states have call predecessors, (75), 76 states have return successors, (110), 78 states have call predecessors, (110), 75 states have call successors, (110) [2023-11-21 19:51:51,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 537 transitions. [2023-11-21 19:51:51,523 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 537 transitions. Word has length 80 [2023-11-21 19:51:51,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:51:51,524 INFO L495 AbstractCegarLoop]: Abstraction has 459 states and 537 transitions. [2023-11-21 19:51:51,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 3 states have call successors, (13), 3 states have call predecessors, (13), 6 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-21 19:51:51,525 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 537 transitions. [2023-11-21 19:51:51,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-21 19:51:51,527 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:51:51,527 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:51:51,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b3a2d1-66c1-4608-b641-295c755082b4/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 19:51:51,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b3a2d1-66c1-4608-b641-295c755082b4/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-21 19:51:51,753 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:51:51,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:51:51,754 INFO L85 PathProgramCache]: Analyzing trace with hash -114368206, now seen corresponding path program 1 times [2023-11-21 19:51:51,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:51:51,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288325943] [2023-11-21 19:51:51,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:51:51,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:51:51,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:51:51,947 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-21 19:51:51,948 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:51:51,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288325943] [2023-11-21 19:51:51,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288325943] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:51:51,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:51:51,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-21 19:51:51,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944040438] [2023-11-21 19:51:51,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:51:51,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-21 19:51:51,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:51:51,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-21 19:51:51,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-21 19:51:51,953 INFO L87 Difference]: Start difference. First operand 459 states and 537 transitions. Second operand has 10 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (11), 1 states have call predecessors, (11), 3 states have return successors, (12), 5 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-21 19:51:52,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:51:52,221 INFO L93 Difference]: Finished difference Result 825 states and 979 transitions. [2023-11-21 19:51:52,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-21 19:51:52,222 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (11), 1 states have call predecessors, (11), 3 states have return successors, (12), 5 states have call predecessors, (12), 2 states have call successors, (12) Word has length 83 [2023-11-21 19:51:52,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:51:52,223 INFO L225 Difference]: With dead ends: 825 [2023-11-21 19:51:52,223 INFO L226 Difference]: Without dead ends: 0 [2023-11-21 19:51:52,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2023-11-21 19:51:52,226 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 49 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 19:51:52,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 278 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 19:51:52,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-21 19:51:52,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-21 19:51:52,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:51:52,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-21 19:51:52,228 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 83 [2023-11-21 19:51:52,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:51:52,228 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-21 19:51:52,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (11), 1 states have call predecessors, (11), 3 states have return successors, (12), 5 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-21 19:51:52,229 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-21 19:51:52,229 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-21 19:51:52,231 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-21 19:51:52,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-21 19:51:52,234 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-21 19:51:54,172 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 566 572) no Hoare annotation was computed. [2023-11-21 19:51:54,173 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 566 572) the Hoare annotation is: true [2023-11-21 19:51:54,173 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 826 837) the Hoare annotation is: (let ((.cse2 (not (= 1 ~systemActive~0))) (.cse0 (= |old(~methaneLevelCritical~0)| 0)) (.cse1 (= ~methaneLevelCritical~0 0))) (and (or (not .cse0) .cse1 .cse2 (not (= ~methAndRunningLastTime~0 0))) (or (= ~pumpRunning~0 0) .cse2 .cse0 (not .cse1)))) [2023-11-21 19:51:54,173 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 826 837) no Hoare annotation was computed. [2023-11-21 19:51:54,173 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 838 846) the Hoare annotation is: true [2023-11-21 19:51:54,173 INFO L899 garLoopResultBuilder]: For program point isMethaneLevelCriticalEXIT(lines 838 846) no Hoare annotation was computed. [2023-11-21 19:51:54,174 INFO L895 garLoopResultBuilder]: At program point L944(line 944) the Hoare annotation is: (let ((.cse4 (= |old(~pumpRunning~0)| 0))) (let ((.cse5 (= ~methaneLevelCritical~0 0)) (.cse6 (not .cse4)) (.cse2 (= ~pumpRunning~0 0)) (.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse3 (not (= 1 ~systemActive~0))) (.cse7 (= ~waterLevel~0 1)) (.cse1 (= ~methAndRunningLastTime~0 0))) (and (or .cse0 (and .cse1 (not .cse2)) .cse3 .cse4 (not .cse5)) (or .cse2 .cse3 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse5) .cse4) (or .cse6 .cse0 (not (= |old(~waterLevel~0)| 1)) .cse3 (and .cse1 .cse7)) (or .cse6 .cse2 .cse0 .cse3 (and (not .cse7) .cse1))))) [2023-11-21 19:51:54,174 INFO L899 garLoopResultBuilder]: For program point L944-1(line 944) no Hoare annotation was computed. [2023-11-21 19:51:54,174 INFO L895 garLoopResultBuilder]: At program point L614(line 614) the Hoare annotation is: (let ((.cse1 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse0 (not (= 1 ~systemActive~0))) (.cse2 (= |old(~pumpRunning~0)| 0))) (and (or (not (= |old(~methAndRunningLastTime~0)| 0)) .cse0 (and .cse1 (= ~methAndRunningLastTime~0 0) (not (= ~pumpRunning~0 0)))) (or (and .cse1 (= |timeShift_processEnvironment_~tmp~5#1| 0)) .cse0 .cse2) (or (= ~methaneLevelCritical~0 0) .cse0 .cse2))) [2023-11-21 19:51:54,174 INFO L899 garLoopResultBuilder]: For program point L420(line 420) no Hoare annotation was computed. [2023-11-21 19:51:54,174 INFO L895 garLoopResultBuilder]: At program point L606(line 606) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (= |old(~pumpRunning~0)| 0))) (and (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse0 .cse1) (or (not (= |old(~methAndRunningLastTime~0)| 0)) .cse0 (and (not .cse1) (= ~methAndRunningLastTime~0 0))))) [2023-11-21 19:51:54,174 INFO L899 garLoopResultBuilder]: For program point L606-1(line 606) no Hoare annotation was computed. [2023-11-21 19:51:54,174 INFO L895 garLoopResultBuilder]: At program point L619(line 619) the Hoare annotation is: (let ((.cse1 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse0 (not (= 1 ~systemActive~0)))) (and (or .cse0 (= |old(~pumpRunning~0)| 0)) (or .cse1 .cse0 (and (= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0))) (or .cse1 (not (= |old(~waterLevel~0)| 1)) .cse0 (= ~waterLevel~0 1)))) [2023-11-21 19:51:54,174 INFO L899 garLoopResultBuilder]: For program point L619-1(lines 600 624) no Hoare annotation was computed. [2023-11-21 19:51:54,175 INFO L899 garLoopResultBuilder]: For program point L553-1(lines 553 559) no Hoare annotation was computed. [2023-11-21 19:51:54,175 INFO L899 garLoopResultBuilder]: For program point L950(lines 950 960) no Hoare annotation was computed. [2023-11-21 19:51:54,175 INFO L899 garLoopResultBuilder]: For program point L946(lines 946 963) no Hoare annotation was computed. [2023-11-21 19:51:54,175 INFO L899 garLoopResultBuilder]: For program point L946-1(lines 938 966) no Hoare annotation was computed. [2023-11-21 19:51:54,175 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 542 565) the Hoare annotation is: (let ((.cse3 (= |old(~pumpRunning~0)| 0))) (let ((.cse0 (not .cse3)) (.cse1 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse2 (not (= 1 ~systemActive~0)))) (and (or .cse0 (= ~pumpRunning~0 0) .cse1 .cse2) (or .cse1 (= ~methAndRunningLastTime~0 0) .cse2) (or .cse0 .cse1 (not (= |old(~waterLevel~0)| 1)) .cse2 (= ~waterLevel~0 1)) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse2 .cse3)))) [2023-11-21 19:51:54,175 INFO L899 garLoopResultBuilder]: For program point L546-1(lines 545 564) no Hoare annotation was computed. [2023-11-21 19:51:54,175 INFO L899 garLoopResultBuilder]: For program point L608(lines 608 616) no Hoare annotation was computed. [2023-11-21 19:51:54,175 INFO L899 garLoopResultBuilder]: For program point L604(lines 604 621) no Hoare annotation was computed. [2023-11-21 19:51:54,175 INFO L899 garLoopResultBuilder]: For program point L951(lines 951 957) no Hoare annotation was computed. [2023-11-21 19:51:54,175 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 542 565) no Hoare annotation was computed. [2023-11-21 19:51:54,176 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 420) no Hoare annotation was computed. [2023-11-21 19:51:54,176 INFO L899 garLoopResultBuilder]: For program point L448(line 448) no Hoare annotation was computed. [2023-11-21 19:51:54,176 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 427 456) no Hoare annotation was computed. [2023-11-21 19:51:54,176 INFO L899 garLoopResultBuilder]: For program point L441(lines 441 445) no Hoare annotation was computed. [2023-11-21 19:51:54,176 INFO L902 garLoopResultBuilder]: At program point L441-1(lines 441 445) the Hoare annotation is: true [2023-11-21 19:51:54,176 INFO L902 garLoopResultBuilder]: At program point L437-2(lines 437 451) the Hoare annotation is: true [2023-11-21 19:51:54,176 INFO L902 garLoopResultBuilder]: At program point L433(line 433) the Hoare annotation is: true [2023-11-21 19:51:54,176 INFO L899 garLoopResultBuilder]: For program point L433-1(line 433) no Hoare annotation was computed. [2023-11-21 19:51:54,176 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 427 456) the Hoare annotation is: true [2023-11-21 19:51:54,176 INFO L899 garLoopResultBuilder]: For program point L452(lines 427 456) no Hoare annotation was computed. [2023-11-21 19:51:54,177 INFO L895 garLoopResultBuilder]: At program point L766(line 766) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (not (= ~pumpRunning~0 0)) .cse0 (not (= ~methaneLevelCritical~0 0)) .cse1) (and (= ~methAndRunningLastTime~0 0) .cse0 .cse1))) [2023-11-21 19:51:54,177 INFO L895 garLoopResultBuilder]: At program point L787(lines 744 789) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (not (= ~pumpRunning~0 0)) .cse0 (not (= ~methaneLevelCritical~0 0)) .cse1) (and (= ~methAndRunningLastTime~0 0) .cse0 .cse1))) [2023-11-21 19:51:54,177 INFO L899 garLoopResultBuilder]: For program point L754(lines 754 760) no Hoare annotation was computed. [2023-11-21 19:51:54,177 INFO L899 garLoopResultBuilder]: For program point L754-1(lines 754 760) no Hoare annotation was computed. [2023-11-21 19:51:54,177 INFO L895 garLoopResultBuilder]: At program point L780-2(lines 774 785) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= ~methAndRunningLastTime~0 0) .cse0 .cse1) (and (not (= ~pumpRunning~0 0)) .cse0 .cse1))) [2023-11-21 19:51:54,177 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-21 19:51:54,177 INFO L899 garLoopResultBuilder]: For program point L764(lines 764 770) no Hoare annotation was computed. [2023-11-21 19:51:54,177 INFO L899 garLoopResultBuilder]: For program point L764-1(lines 764 770) no Hoare annotation was computed. [2023-11-21 19:51:54,177 INFO L899 garLoopResultBuilder]: For program point L793(lines 734 797) no Hoare annotation was computed. [2023-11-21 19:51:54,178 INFO L895 garLoopResultBuilder]: At program point L756(line 756) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (not (= ~pumpRunning~0 0)) .cse0 (not (= ~methaneLevelCritical~0 0)) .cse1) (and (= ~methAndRunningLastTime~0 0) .cse0 .cse1))) [2023-11-21 19:51:54,178 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-21 19:51:54,178 INFO L899 garLoopResultBuilder]: For program point L517(lines 517 524) no Hoare annotation was computed. [2023-11-21 19:51:54,178 INFO L899 garLoopResultBuilder]: For program point L517-2(lines 517 524) no Hoare annotation was computed. [2023-11-21 19:51:54,178 INFO L895 garLoopResultBuilder]: At program point L790(lines 743 791) the Hoare annotation is: false [2023-11-21 19:51:54,178 INFO L899 garLoopResultBuilder]: For program point L745(lines 744 789) no Hoare annotation was computed. [2023-11-21 19:51:54,178 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 814 825) no Hoare annotation was computed. [2023-11-21 19:51:54,178 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 814 825) the Hoare annotation is: true [2023-11-21 19:51:54,178 INFO L895 garLoopResultBuilder]: At program point L638(line 638) the Hoare annotation is: (let ((.cse1 (= |old(~pumpRunning~0)| 0)) (.cse0 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 (not (= ~methaneLevelCritical~0 0))) (or (not .cse1) .cse0 (and (not (= ~waterLevel~0 1)) (= ~pumpRunning~0 0)) (not (= ~methAndRunningLastTime~0 0))))) [2023-11-21 19:51:54,178 INFO L899 garLoopResultBuilder]: For program point L638-1(line 638) no Hoare annotation was computed. [2023-11-21 19:51:54,179 INFO L895 garLoopResultBuilder]: At program point L593(line 593) the Hoare annotation is: (let ((.cse1 (not (= 1 ~systemActive~0))) (.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (not .cse0) .cse1 (not (= ~methAndRunningLastTime~0 0))) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse1 .cse0 (not (= ~methaneLevelCritical~0 0))))) [2023-11-21 19:51:54,179 INFO L899 garLoopResultBuilder]: For program point L593-1(lines 574 598) no Hoare annotation was computed. [2023-11-21 19:51:54,179 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 574 598) the Hoare annotation is: (let ((.cse1 (not (= 1 ~systemActive~0))) (.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (not .cse0) (= ~pumpRunning~0 0) .cse1 (not (= ~methAndRunningLastTime~0 0))) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse1 .cse0 (not (= ~methaneLevelCritical~0 0))))) [2023-11-21 19:51:54,179 INFO L895 garLoopResultBuilder]: At program point L588(line 588) the Hoare annotation is: (let ((.cse1 (= |old(~pumpRunning~0)| 0)) (.cse0 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 (not (= ~methaneLevelCritical~0 0))) (or (not .cse1) .cse0 (and (or (not (= ~waterLevel~0 1)) (= |processEnvironment__wrappee__methaneQuery_~tmp~4#1| 0)) (= ~pumpRunning~0 0)) (not (= ~methAndRunningLastTime~0 0))))) [2023-11-21 19:51:54,179 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__methaneQueryEXIT(lines 574 598) no Hoare annotation was computed. [2023-11-21 19:51:54,179 INFO L899 garLoopResultBuilder]: For program point L582(lines 582 590) no Hoare annotation was computed. [2023-11-21 19:51:54,179 INFO L899 garLoopResultBuilder]: For program point L578(lines 578 595) no Hoare annotation was computed. [2023-11-21 19:51:54,179 INFO L899 garLoopResultBuilder]: For program point isMethaneAlarmEXIT(lines 658 668) no Hoare annotation was computed. [2023-11-21 19:51:54,180 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 658 668) the Hoare annotation is: true [2023-11-21 19:51:54,183 INFO L902 garLoopResultBuilder]: At program point L663(line 663) the Hoare annotation is: true [2023-11-21 19:51:54,183 INFO L899 garLoopResultBuilder]: For program point L663-1(line 663) no Hoare annotation was computed. [2023-11-21 19:51:54,186 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:51:54,189 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 19:51:54,206 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 07:51:54 BoogieIcfgContainer [2023-11-21 19:51:54,207 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 19:51:54,207 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 19:51:54,207 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 19:51:54,208 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 19:51:54,208 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:51:45" (3/4) ... [2023-11-21 19:51:54,210 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-21 19:51:54,213 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2023-11-21 19:51:54,214 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2023-11-21 19:51:54,214 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2023-11-21 19:51:54,214 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2023-11-21 19:51:54,214 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2023-11-21 19:51:54,214 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2023-11-21 19:51:54,215 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__methaneQuery [2023-11-21 19:51:54,215 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneAlarm [2023-11-21 19:51:54,230 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 45 nodes and edges [2023-11-21 19:51:54,230 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-11-21 19:51:54,231 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-21 19:51:54,232 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-21 19:51:54,233 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-21 19:51:54,263 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!((\old(pumpRunning) == 0)) || (pumpRunning == 0)) || !((\old(methAndRunningLastTime) == 0))) || !((1 == systemActive))) && ((!((\old(methAndRunningLastTime) == 0)) || (methAndRunningLastTime == 0)) || !((1 == systemActive)))) && ((((!((\old(pumpRunning) == 0)) || !((\old(methAndRunningLastTime) == 0))) || !((\old(waterLevel) == 1))) || !((1 == systemActive))) || (waterLevel == 1))) && (((pumpRunning == \old(pumpRunning)) || !((1 == systemActive))) || (\old(pumpRunning) == 0))) [2023-11-21 19:51:54,316 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!((\old(pumpRunning) == 0)) || (pumpRunning == 0)) || !((\old(methAndRunningLastTime) == 0))) || !((1 == systemActive))) && ((!((\old(methAndRunningLastTime) == 0)) || (methAndRunningLastTime == 0)) || !((1 == systemActive)))) && ((((!((\old(pumpRunning) == 0)) || !((\old(methAndRunningLastTime) == 0))) || !((\old(waterLevel) == 1))) || !((1 == systemActive))) || (waterLevel == 1))) && (((pumpRunning == \old(pumpRunning)) || !((1 == systemActive))) || (\old(pumpRunning) == 0))) [2023-11-21 19:51:54,373 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b3a2d1-66c1-4608-b641-295c755082b4/bin/utaipan-verify-QoSU8krkJ5/witness.graphml [2023-11-21 19:51:54,374 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b3a2d1-66c1-4608-b641-295c755082b4/bin/utaipan-verify-QoSU8krkJ5/witness.yml [2023-11-21 19:51:54,374 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 19:51:54,375 INFO L158 Benchmark]: Toolchain (without parser) took 10786.52ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 115.8MB in the beginning and 90.7MB in the end (delta: 25.1MB). Peak memory consumption was 56.4MB. Max. memory is 16.1GB. [2023-11-21 19:51:54,375 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 115.3MB. Free memory is still 88.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 19:51:54,375 INFO L158 Benchmark]: CACSL2BoogieTranslator took 709.11ms. Allocated memory is still 151.0MB. Free memory was 115.8MB in the beginning and 96.0MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-21 19:51:54,376 INFO L158 Benchmark]: Boogie Procedure Inliner took 92.23ms. Allocated memory is still 151.0MB. Free memory was 96.0MB in the beginning and 94.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 19:51:54,376 INFO L158 Benchmark]: Boogie Preprocessor took 56.22ms. Allocated memory is still 151.0MB. Free memory was 94.0MB in the beginning and 92.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 19:51:54,377 INFO L158 Benchmark]: RCFGBuilder took 855.33ms. Allocated memory is still 151.0MB. Free memory was 91.9MB in the beginning and 97.0MB in the end (delta: -5.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-21 19:51:54,377 INFO L158 Benchmark]: TraceAbstraction took 8898.75ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 97.0MB in the beginning and 98.0MB in the end (delta: -1.1MB). Peak memory consumption was 90.1MB. Max. memory is 16.1GB. [2023-11-21 19:51:54,378 INFO L158 Benchmark]: Witness Printer took 166.81ms. Allocated memory is still 182.5MB. Free memory was 98.0MB in the beginning and 90.7MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-21 19:51:54,381 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 115.3MB. Free memory is still 88.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 709.11ms. Allocated memory is still 151.0MB. Free memory was 115.8MB in the beginning and 96.0MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 92.23ms. Allocated memory is still 151.0MB. Free memory was 96.0MB in the beginning and 94.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.22ms. Allocated memory is still 151.0MB. Free memory was 94.0MB in the beginning and 92.5MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 855.33ms. Allocated memory is still 151.0MB. Free memory was 91.9MB in the beginning and 97.0MB in the end (delta: -5.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 8898.75ms. Allocated memory was 151.0MB in the beginning and 182.5MB in the end (delta: 31.5MB). Free memory was 97.0MB in the beginning and 98.0MB in the end (delta: -1.1MB). Peak memory consumption was 90.1MB. Max. memory is 16.1GB. * Witness Printer took 166.81ms. Allocated memory is still 182.5MB. Free memory was 98.0MB in the beginning and 90.7MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 49]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [49] - GenericResultAtLocation [Line: 415]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [415] - GenericResultAtLocation [Line: 424]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [424] - GenericResultAtLocation [Line: 530]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [530] - GenericResultAtLocation [Line: 733]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [733] - GenericResultAtLocation [Line: 798]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [798] - GenericResultAtLocation [Line: 893]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [893] - GenericResultAtLocation [Line: 928]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [928] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 420]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.8s, OverallIterations: 11, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 535 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 516 mSDsluCounter, 1896 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1265 mSDsCounter, 121 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1298 IncrementalHoareTripleChecker+Invalid, 1419 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 121 mSolverCounterUnsat, 631 mSDtfsCounter, 1298 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 254 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=459occurred in iteration=10, InterpolantAutomatonStates: 74, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 11 MinimizatonAttempts, 87 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 24 LocationsWithAnnotation, 680 PreInvPairs, 746 NumberOfFragments, 543 HoareAnnotationTreeSize, 680 FomulaSimplifications, 925 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 24 FomulaSimplificationsInter, 7049 FormulaSimplificationTreeSizeReductionInter, 1.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 662 NumberOfCodeBlocks, 662 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 649 ConstructedInterpolants, 0 QuantifiedInterpolants, 1318 SizeOfPredicates, 6 NumberOfNonLiveVariables, 612 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 13 InterpolantComputations, 11 PerfectInterpolantSequences, 221/233 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 744]: Loop Invariant Derived loop invariant: ((((!((pumpRunning == 0)) && (1 == systemActive)) && !((methaneLevelCritical == 0))) && (splverifierCounter == 0)) || (((methAndRunningLastTime == 0) && (1 == systemActive)) && (splverifierCounter == 0))) - InvariantResult [Line: 437]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 743]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 542]: Loop Invariant Derived loop invariant: ((((((!((\old(pumpRunning) == 0)) || (pumpRunning == 0)) || !((\old(methAndRunningLastTime) == 0))) || !((1 == systemActive))) && ((!((\old(methAndRunningLastTime) == 0)) || (methAndRunningLastTime == 0)) || !((1 == systemActive)))) && ((((!((\old(pumpRunning) == 0)) || !((\old(methAndRunningLastTime) == 0))) || !((\old(waterLevel) == 1))) || !((1 == systemActive))) || (waterLevel == 1))) && (((pumpRunning == \old(pumpRunning)) || !((1 == systemActive))) || (\old(pumpRunning) == 0))) RESULT: Ultimate proved your program to be correct! [2023-11-21 19:51:54,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_39b3a2d1-66c1-4608-b641-295c755082b4/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE