./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product34.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d88221d-47b6-437a-9d2c-fe813f4cc3e7/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d88221d-47b6-437a-9d2c-fe813f4cc3e7/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_7d88221d-47b6-437a-9d2c-fe813f4cc3e7/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d88221d-47b6-437a-9d2c-fe813f4cc3e7/bin/utaipan-verify-QoSU8krkJ5/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product34.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d88221d-47b6-437a-9d2c-fe813f4cc3e7/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_7d88221d-47b6-437a-9d2c-fe813f4cc3e7/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 2a152d19fa28b0169076b34a0513a75c542cc933ab1c694f300fdf3273b66e93 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:49:49,617 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:49:49,729 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d88221d-47b6-437a-9d2c-fe813f4cc3e7/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-21 19:49:49,736 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:49:49,737 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:49:49,772 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:49:49,773 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:49:49,773 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:49:49,774 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:49:49,775 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:49:49,775 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:49:49,776 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:49:49,776 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:49:49,777 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 19:49:49,777 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:49:49,778 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:49:49,778 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 19:49:49,779 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 19:49:49,779 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:49:49,780 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 19:49:49,780 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 19:49:49,781 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 19:49:49,782 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:49:49,782 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 19:49:49,783 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 19:49:49,783 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:49:49,784 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 19:49:49,784 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:49:49,785 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 19:49:49,785 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:49:49,797 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 19:49:49,797 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 19:49:49,798 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 19:49:49,798 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:49:49,798 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:49:49,799 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:49:49,799 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:49:49,799 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:49:49,800 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:49:49,800 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:49:49,800 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 19:49:49,801 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 19:49:49,801 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 19:49:49,801 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:49:49,802 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 19:49:49,802 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:49:49,802 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:49:49,802 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_7d88221d-47b6-437a-9d2c-fe813f4cc3e7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d88221d-47b6-437a-9d2c-fe813f4cc3e7/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a152d19fa28b0169076b34a0513a75c542cc933ab1c694f300fdf3273b66e93 [2023-11-21 19:49:50,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:49:50,190 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:49:50,193 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:49:50,196 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:49:50,196 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:49:50,198 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d88221d-47b6-437a-9d2c-fe813f4cc3e7/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/product-lines/minepump_spec4_product34.cil.c [2023-11-21 19:49:53,165 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:49:53,398 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:49:53,399 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d88221d-47b6-437a-9d2c-fe813f4cc3e7/sv-benchmarks/c/product-lines/minepump_spec4_product34.cil.c [2023-11-21 19:49:53,428 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d88221d-47b6-437a-9d2c-fe813f4cc3e7/bin/utaipan-verify-QoSU8krkJ5/data/a8dede97a/8b62a700acb34584b8ae5ad8e0416cc9/FLAG8970ce900 [2023-11-21 19:49:53,445 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d88221d-47b6-437a-9d2c-fe813f4cc3e7/bin/utaipan-verify-QoSU8krkJ5/data/a8dede97a/8b62a700acb34584b8ae5ad8e0416cc9 [2023-11-21 19:49:53,448 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:49:53,450 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:49:53,451 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:49:53,451 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:49:53,457 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:49:53,458 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:49:53" (1/1) ... [2023-11-21 19:49:53,459 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@856ed35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:53, skipping insertion in model container [2023-11-21 19:49:53,459 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:49:53" (1/1) ... [2023-11-21 19:49:53,506 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:49:53,724 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_7d88221d-47b6-437a-9d2c-fe813f4cc3e7/sv-benchmarks/c/product-lines/minepump_spec4_product34.cil.c[8026,8039] [2023-11-21 19:49:53,783 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:49:53,799 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:49:53,810 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification4_spec.i","") [49] [2023-11-21 19:49:53,812 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [78] [2023-11-21 19:49:53,812 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [182] [2023-11-21 19:49:53,813 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [217] [2023-11-21 19:49:53,813 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [285] [2023-11-21 19:49:53,813 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [451] [2023-11-21 19:49:53,814 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [545] [2023-11-21 19:49:53,814 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [554] [2023-11-21 19:49:53,862 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_7d88221d-47b6-437a-9d2c-fe813f4cc3e7/sv-benchmarks/c/product-lines/minepump_spec4_product34.cil.c[8026,8039] [2023-11-21 19:49:53,899 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:49:53,920 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:49:53,921 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:53 WrapperNode [2023-11-21 19:49:53,921 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:49:53,922 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:49:53,923 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:49:53,923 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:49:53,931 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:53" (1/1) ... [2023-11-21 19:49:53,951 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:53" (1/1) ... [2023-11-21 19:49:53,983 INFO L138 Inliner]: procedures = 53, calls = 94, calls flagged for inlining = 22, calls inlined = 18, statements flattened = 173 [2023-11-21 19:49:53,983 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:49:53,984 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:49:53,984 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:49:53,984 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:49:53,994 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:53" (1/1) ... [2023-11-21 19:49:53,994 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:53" (1/1) ... [2023-11-21 19:49:54,002 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:53" (1/1) ... [2023-11-21 19:49:54,002 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:53" (1/1) ... [2023-11-21 19:49:54,012 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:53" (1/1) ... [2023-11-21 19:49:54,017 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:53" (1/1) ... [2023-11-21 19:49:54,019 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:53" (1/1) ... [2023-11-21 19:49:54,020 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:53" (1/1) ... [2023-11-21 19:49:54,031 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:49:54,032 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:49:54,032 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:49:54,032 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:49:54,033 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:53" (1/1) ... [2023-11-21 19:49:54,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:49:54,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d88221d-47b6-437a-9d2c-fe813f4cc3e7/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:49:54,075 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d88221d-47b6-437a-9d2c-fe813f4cc3e7/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:49:54,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d88221d-47b6-437a-9d2c-fe813f4cc3e7/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:49:54,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:49:54,144 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-11-21 19:49:54,145 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-11-21 19:49:54,145 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-21 19:49:54,145 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-21 19:49:54,145 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-21 19:49:54,147 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-21 19:49:54,147 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-11-21 19:49:54,148 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-11-21 19:49:54,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 19:49:54,148 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-11-21 19:49:54,149 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-11-21 19:49:54,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:49:54,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:49:54,297 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:49:54,301 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:49:54,656 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:49:54,825 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:49:54,825 INFO L308 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-21 19:49:54,827 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:49:54 BoogieIcfgContainer [2023-11-21 19:49:54,827 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:49:54,830 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:49:54,830 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:49:54,834 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:49:54,834 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:49:53" (1/3) ... [2023-11-21 19:49:54,835 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fd9cf0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:49:54, skipping insertion in model container [2023-11-21 19:49:54,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:49:53" (2/3) ... [2023-11-21 19:49:54,836 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fd9cf0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:49:54, skipping insertion in model container [2023-11-21 19:49:54,836 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:49:54" (3/3) ... [2023-11-21 19:49:54,837 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product34.cil.c [2023-11-21 19:49:54,854 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:49:54,854 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 19:49:54,913 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:49:54,921 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;@3164968b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:49:54,922 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 19:49:54,927 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 35 states have internal predecessors, (42), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-21 19:49:54,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-21 19:49:54,941 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:49:54,942 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:49:54,943 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:49:54,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:49:54,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1090039517, now seen corresponding path program 1 times [2023-11-21 19:49:54,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:49:54,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452641415] [2023-11-21 19:49:54,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:49:54,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:49:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:49:55,193 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 19:49:55,193 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:49:55,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452641415] [2023-11-21 19:49:55,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452641415] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:49:55,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:49:55,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:49:55,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863351303] [2023-11-21 19:49:55,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:49:55,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-21 19:49:55,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:49:55,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-21 19:49:55,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-21 19:49:55,256 INFO L87 Difference]: Start difference. First operand has 44 states, 29 states have (on average 1.4482758620689655) internal successors, (42), 35 states have internal predecessors, (42), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:49:55,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:49:55,346 INFO L93 Difference]: Finished difference Result 86 states and 117 transitions. [2023-11-21 19:49:55,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 19:49:55,349 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-21 19:49:55,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:49:55,359 INFO L225 Difference]: With dead ends: 86 [2023-11-21 19:49:55,359 INFO L226 Difference]: Without dead ends: 39 [2023-11-21 19:49:55,363 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 19:49:55,368 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:49:55,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 19:49:55,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-11-21 19:49:55,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-11-21 19:49:55,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 31 states have internal predecessors, (34), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-21 19:49:55,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2023-11-21 19:49:55,428 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 12 [2023-11-21 19:49:55,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:49:55,430 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2023-11-21 19:49:55,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:49:55,430 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2023-11-21 19:49:55,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-21 19:49:55,433 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:49:55,433 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:49:55,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 19:49:55,434 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:49:55,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:49:55,435 INFO L85 PathProgramCache]: Analyzing trace with hash 139926701, now seen corresponding path program 1 times [2023-11-21 19:49:55,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:49:55,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240136042] [2023-11-21 19:49:55,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:49:55,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:49:55,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:49:55,551 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 19:49:55,552 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:49:55,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240136042] [2023-11-21 19:49:55,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240136042] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:49:55,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:49:55,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:49:55,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776126343] [2023-11-21 19:49:55,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:49:55,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:49:55,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:49:55,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:49:55,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:49:55,557 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:49:55,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:49:55,606 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2023-11-21 19:49:55,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:49:55,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-21 19:49:55,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:49:55,611 INFO L225 Difference]: With dead ends: 55 [2023-11-21 19:49:55,611 INFO L226 Difference]: Without dead ends: 31 [2023-11-21 19:49:55,617 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 19:49:55,620 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 7 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:49:55,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 43 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 19:49:55,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-11-21 19:49:55,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-11-21 19:49:55,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 26 states have internal predecessors, (28), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-21 19:49:55,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2023-11-21 19:49:55,639 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 13 [2023-11-21 19:49:55,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:49:55,640 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2023-11-21 19:49:55,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:49:55,640 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2023-11-21 19:49:55,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-21 19:49:55,641 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:49:55,641 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:49:55,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 19:49:55,642 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:49:55,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:49:55,642 INFO L85 PathProgramCache]: Analyzing trace with hash -293562136, now seen corresponding path program 1 times [2023-11-21 19:49:55,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:49:55,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505931365] [2023-11-21 19:49:55,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:49:55,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:49:55,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:49:55,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:49:55,856 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:49:55,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505931365] [2023-11-21 19:49:55,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505931365] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:49:55,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:49:55,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:49:55,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788417323] [2023-11-21 19:49:55,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:49:55,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:49:55,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:49:55,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:49:55,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:49:55,860 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:49:55,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:49:55,972 INFO L93 Difference]: Finished difference Result 86 states and 108 transitions. [2023-11-21 19:49:55,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 19:49:55,973 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-21 19:49:55,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:49:55,975 INFO L225 Difference]: With dead ends: 86 [2023-11-21 19:49:55,975 INFO L226 Difference]: Without dead ends: 57 [2023-11-21 19:49:55,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:49:55,977 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 22 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:49:55,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 73 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:49:55,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-11-21 19:49:55,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2023-11-21 19:49:55,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 44 states have internal predecessors, (49), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2023-11-21 19:49:55,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 67 transitions. [2023-11-21 19:49:55,992 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 67 transitions. Word has length 15 [2023-11-21 19:49:55,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:49:55,993 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 67 transitions. [2023-11-21 19:49:55,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:49:55,993 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 67 transitions. [2023-11-21 19:49:55,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-21 19:49:55,994 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:49:55,994 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 19:49:55,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 19:49:55,995 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:49:55,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:49:55,996 INFO L85 PathProgramCache]: Analyzing trace with hash -2062014565, now seen corresponding path program 1 times [2023-11-21 19:49:55,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:49:55,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988206232] [2023-11-21 19:49:55,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:49:55,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:49:56,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:49:56,298 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 19:49:56,298 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:49:56,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988206232] [2023-11-21 19:49:56,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988206232] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:49:56,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:49:56,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 19:49:56,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112590966] [2023-11-21 19:49:56,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:49:56,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 19:49:56,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:49:56,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 19:49:56,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:49:56,302 INFO L87 Difference]: Start difference. First operand 55 states and 67 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:49:56,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:49:56,502 INFO L93 Difference]: Finished difference Result 152 states and 188 transitions. [2023-11-21 19:49:56,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 19:49:56,509 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-21 19:49:56,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:49:56,511 INFO L225 Difference]: With dead ends: 152 [2023-11-21 19:49:56,511 INFO L226 Difference]: Without dead ends: 99 [2023-11-21 19:49:56,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-21 19:49:56,513 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 48 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:49:56,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 85 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:49:56,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-11-21 19:49:56,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 85. [2023-11-21 19:49:56,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 59 states have (on average 1.2542372881355932) internal successors, (74), 68 states have internal predecessors, (74), 12 states have call successors, (12), 12 states have call predecessors, (12), 13 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2023-11-21 19:49:56,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 101 transitions. [2023-11-21 19:49:56,538 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 101 transitions. Word has length 18 [2023-11-21 19:49:56,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:49:56,538 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 101 transitions. [2023-11-21 19:49:56,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:49:56,539 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 101 transitions. [2023-11-21 19:49:56,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-21 19:49:56,540 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:49:56,541 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:49:56,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 19:49:56,541 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:49:56,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:49:56,542 INFO L85 PathProgramCache]: Analyzing trace with hash -628777353, now seen corresponding path program 1 times [2023-11-21 19:49:56,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:49:56,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037802770] [2023-11-21 19:49:56,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:49:56,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:49:56,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:49:56,682 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:49:56,682 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:49:56,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037802770] [2023-11-21 19:49:56,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037802770] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:49:56,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:49:56,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:49:56,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097633824] [2023-11-21 19:49:56,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:49:56,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:49:56,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:49:56,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:49:56,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:49:56,685 INFO L87 Difference]: Start difference. First operand 85 states and 101 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 19:49:56,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:49:56,719 INFO L93 Difference]: Finished difference Result 168 states and 203 transitions. [2023-11-21 19:49:56,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:49:56,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 31 [2023-11-21 19:49:56,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:49:56,721 INFO L225 Difference]: With dead ends: 168 [2023-11-21 19:49:56,721 INFO L226 Difference]: Without dead ends: 85 [2023-11-21 19:49:56,722 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 19:49:56,728 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 20 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:49:56,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 24 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 19:49:56,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-11-21 19:49:56,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2023-11-21 19:49:56,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 59 states have (on average 1.2033898305084745) internal successors, (71), 68 states have internal predecessors, (71), 12 states have call successors, (12), 12 states have call predecessors, (12), 13 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2023-11-21 19:49:56,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 98 transitions. [2023-11-21 19:49:56,745 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 98 transitions. Word has length 31 [2023-11-21 19:49:56,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:49:56,746 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 98 transitions. [2023-11-21 19:49:56,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 19:49:56,746 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 98 transitions. [2023-11-21 19:49:56,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-21 19:49:56,748 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:49:56,748 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:49:56,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 19:49:56,748 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:49:56,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:49:56,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1635386284, now seen corresponding path program 1 times [2023-11-21 19:49:56,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:49:56,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106634709] [2023-11-21 19:49:56,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:49:56,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:49:56,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:49:56,876 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:49:56,877 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:49:56,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106634709] [2023-11-21 19:49:56,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106634709] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:49:56,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:49:56,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:49:56,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014534224] [2023-11-21 19:49:56,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:49:56,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:49:56,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:49:56,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:49:56,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:49:56,888 INFO L87 Difference]: Start difference. First operand 85 states and 98 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 19:49:56,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:49:56,937 INFO L93 Difference]: Finished difference Result 112 states and 131 transitions. [2023-11-21 19:49:56,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:49:56,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 34 [2023-11-21 19:49:56,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:49:56,940 INFO L225 Difference]: With dead ends: 112 [2023-11-21 19:49:56,940 INFO L226 Difference]: Without dead ends: 59 [2023-11-21 19:49:56,944 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 19:49:56,948 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 16 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:49:56,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 57 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 19:49:56,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-21 19:49:56,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-11-21 19:49:56,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 41 states have (on average 1.170731707317073) internal successors, (48), 47 states have internal predecessors, (48), 8 states have call successors, (8), 8 states have call predecessors, (8), 9 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2023-11-21 19:49:56,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2023-11-21 19:49:56,968 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 34 [2023-11-21 19:49:56,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:49:56,968 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2023-11-21 19:49:56,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 19:49:56,968 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2023-11-21 19:49:56,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-21 19:49:56,972 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:49:56,973 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-21 19:49:56,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 19:49:56,973 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:49:56,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:49:56,975 INFO L85 PathProgramCache]: Analyzing trace with hash 720707228, now seen corresponding path program 1 times [2023-11-21 19:49:56,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:49:56,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799825442] [2023-11-21 19:49:56,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:49:56,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:49:57,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:49:57,339 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:49:57,339 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:49:57,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799825442] [2023-11-21 19:49:57,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799825442] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:49:57,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:49:57,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 19:49:57,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631110179] [2023-11-21 19:49:57,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:49:57,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 19:49:57,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:49:57,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 19:49:57,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-21 19:49:57,343 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 19:49:57,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:49:57,571 INFO L93 Difference]: Finished difference Result 115 states and 128 transitions. [2023-11-21 19:49:57,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 19:49:57,572 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2023-11-21 19:49:57,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:49:57,575 INFO L225 Difference]: With dead ends: 115 [2023-11-21 19:49:57,575 INFO L226 Difference]: Without dead ends: 83 [2023-11-21 19:49:57,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-21 19:49:57,578 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 54 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:49:57,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 78 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:49:57,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-11-21 19:49:57,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2023-11-21 19:49:57,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 57 states have (on average 1.1578947368421053) internal successors, (66), 64 states have internal predecessors, (66), 11 states have call successors, (11), 11 states have call predecessors, (11), 12 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2023-11-21 19:49:57,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 89 transitions. [2023-11-21 19:49:57,605 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 89 transitions. Word has length 36 [2023-11-21 19:49:57,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:49:57,605 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 89 transitions. [2023-11-21 19:49:57,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 19:49:57,606 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 89 transitions. [2023-11-21 19:49:57,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-21 19:49:57,607 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:49:57,608 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-21 19:49:57,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 19:49:57,608 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:49:57,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:49:57,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1489231497, now seen corresponding path program 1 times [2023-11-21 19:49:57,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:49:57,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270271928] [2023-11-21 19:49:57,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:49:57,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:49:57,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:49:58,081 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:49:58,082 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:49:58,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270271928] [2023-11-21 19:49:58,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270271928] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:49:58,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802516551] [2023-11-21 19:49:58,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:49:58,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:49:58,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d88221d-47b6-437a-9d2c-fe813f4cc3e7/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:49:58,090 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d88221d-47b6-437a-9d2c-fe813f4cc3e7/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:49:58,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d88221d-47b6-437a-9d2c-fe813f4cc3e7/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 19:49:58,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:49:58,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-21 19:49:58,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:49:58,613 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:49:58,613 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:49:58,992 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-21 19:49:58,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802516551] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 19:49:58,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1515931236] [2023-11-21 19:49:59,016 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2023-11-21 19:49:59,016 INFO L166 IcfgInterpreter]: Building call graph [2023-11-21 19:49:59,020 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-21 19:49:59,026 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-21 19:49:59,027 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-21 19:50:03,163 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 15 for LOIs [2023-11-21 19:50:03,170 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 44 for LOIs [2023-11-21 19:50:03,407 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 43 for LOIs [2023-11-21 19:50:03,417 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-21 19:50:04,784 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1943#(and (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1| 0)) (<= |timeShift_isPumpRunning_#res#1| 2147483647) (= |timeShift_isPumpRunning_#res#1| ~pumpRunning~0) (= |timeShift_getWaterLevel_#res#1| 0) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~0#1| 0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~0#1|) (= ~waterLevel~0 0) (<= 0 (+ |timeShift_isPumpRunning_#res#1| 2147483648)))' at error location [2023-11-21 19:50:04,785 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-21 19:50:04,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 19:50:04,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 22 [2023-11-21 19:50:04,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645015018] [2023-11-21 19:50:04,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 19:50:04,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-21 19:50:04,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:50:04,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-21 19:50:04,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1302, Unknown=0, NotChecked=0, Total=1482 [2023-11-21 19:50:04,789 INFO L87 Difference]: Start difference. First operand 81 states and 89 transitions. Second operand has 22 states, 19 states have (on average 3.526315789473684) internal successors, (67), 19 states have internal predecessors, (67), 6 states have call successors, (9), 8 states have call predecessors, (9), 8 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-21 19:50:05,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:50:05,547 INFO L93 Difference]: Finished difference Result 157 states and 178 transitions. [2023-11-21 19:50:05,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-21 19:50:05,548 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 3.526315789473684) internal successors, (67), 19 states have internal predecessors, (67), 6 states have call successors, (9), 8 states have call predecessors, (9), 8 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) Word has length 39 [2023-11-21 19:50:05,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:50:05,549 INFO L225 Difference]: With dead ends: 157 [2023-11-21 19:50:05,549 INFO L226 Difference]: Without dead ends: 130 [2023-11-21 19:50:05,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 82 SyntacticMatches, 12 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1117 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=465, Invalid=2397, Unknown=0, NotChecked=0, Total=2862 [2023-11-21 19:50:05,552 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 204 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 19:50:05,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 239 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 19:50:05,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-11-21 19:50:05,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 108. [2023-11-21 19:50:05,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 76 states have (on average 1.1578947368421053) internal successors, (88), 84 states have internal predecessors, (88), 15 states have call successors, (15), 15 states have call predecessors, (15), 16 states have return successors, (16), 16 states have call predecessors, (16), 15 states have call successors, (16) [2023-11-21 19:50:05,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 119 transitions. [2023-11-21 19:50:05,581 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 119 transitions. Word has length 39 [2023-11-21 19:50:05,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:50:05,582 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 119 transitions. [2023-11-21 19:50:05,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 3.526315789473684) internal successors, (67), 19 states have internal predecessors, (67), 6 states have call successors, (9), 8 states have call predecessors, (9), 8 states have return successors, (8), 4 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-21 19:50:05,582 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 119 transitions. [2023-11-21 19:50:05,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-21 19:50:05,590 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:50:05,590 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:50:05,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d88221d-47b6-437a-9d2c-fe813f4cc3e7/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 19:50:05,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d88221d-47b6-437a-9d2c-fe813f4cc3e7/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-21 19:50:05,812 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:50:05,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:50:05,812 INFO L85 PathProgramCache]: Analyzing trace with hash -540658166, now seen corresponding path program 2 times [2023-11-21 19:50:05,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:50:05,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195749722] [2023-11-21 19:50:05,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:50:05,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:50:05,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 19:50:05,845 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 19:50:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 19:50:05,927 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-21 19:50:05,928 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 19:50:05,929 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-21 19:50:05,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-21 19:50:05,934 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:50:05,938 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 19:50:05,992 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated [2023-11-21 19:50:05,994 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated [2023-11-21 19:50:06,000 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated [2023-11-21 19:50:06,000 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated [2023-11-21 19:50:06,002 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated [2023-11-21 19:50:06,006 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated [2023-11-21 19:50:06,009 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated [2023-11-21 19:50:06,010 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated [2023-11-21 19:50:06,010 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated [2023-11-21 19:50:06,013 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated [2023-11-21 19:50:06,035 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 07:50:06 BoogieIcfgContainer [2023-11-21 19:50:06,035 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 19:50:06,036 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 19:50:06,036 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 19:50:06,036 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 19:50:06,037 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:49:54" (3/4) ... [2023-11-21 19:50:06,037 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-21 19:50:06,061 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated [2023-11-21 19:50:06,061 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated [2023-11-21 19:50:06,062 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated [2023-11-21 19:50:06,062 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated [2023-11-21 19:50:06,062 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated [2023-11-21 19:50:06,063 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated [2023-11-21 19:50:06,064 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated [2023-11-21 19:50:06,064 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated [2023-11-21 19:50:06,064 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated [2023-11-21 19:50:06,065 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated [2023-11-21 19:50:06,144 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d88221d-47b6-437a-9d2c-fe813f4cc3e7/bin/utaipan-verify-QoSU8krkJ5/witness.graphml [2023-11-21 19:50:06,144 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 19:50:06,145 INFO L158 Benchmark]: Toolchain (without parser) took 12695.55ms. Allocated memory was 113.2MB in the beginning and 392.2MB in the end (delta: 278.9MB). Free memory was 74.9MB in the beginning and 245.5MB in the end (delta: -170.5MB). Peak memory consumption was 110.0MB. Max. memory is 16.1GB. [2023-11-21 19:50:06,145 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 113.2MB. Free memory is still 84.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 19:50:06,146 INFO L158 Benchmark]: CACSL2BoogieTranslator took 470.47ms. Allocated memory is still 113.2MB. Free memory was 74.6MB in the beginning and 55.7MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-21 19:50:06,146 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.96ms. Allocated memory is still 113.2MB. Free memory was 55.7MB in the beginning and 53.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 19:50:06,146 INFO L158 Benchmark]: Boogie Preprocessor took 46.88ms. Allocated memory is still 113.2MB. Free memory was 53.4MB in the beginning and 51.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 19:50:06,147 INFO L158 Benchmark]: RCFGBuilder took 795.82ms. Allocated memory is still 113.2MB. Free memory was 51.9MB in the beginning and 67.7MB in the end (delta: -15.8MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. [2023-11-21 19:50:06,147 INFO L158 Benchmark]: TraceAbstraction took 11205.67ms. Allocated memory was 113.2MB in the beginning and 392.2MB in the end (delta: 278.9MB). Free memory was 66.6MB in the beginning and 251.7MB in the end (delta: -185.2MB). Peak memory consumption was 93.3MB. Max. memory is 16.1GB. [2023-11-21 19:50:06,148 INFO L158 Benchmark]: Witness Printer took 108.73ms. Allocated memory is still 392.2MB. Free memory was 251.7MB in the beginning and 245.5MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-21 19:50:06,150 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 113.2MB. Free memory is still 84.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 470.47ms. Allocated memory is still 113.2MB. Free memory was 74.6MB in the beginning and 55.7MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.96ms. Allocated memory is still 113.2MB. Free memory was 55.7MB in the beginning and 53.4MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.88ms. Allocated memory is still 113.2MB. Free memory was 53.4MB in the beginning and 51.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 795.82ms. Allocated memory is still 113.2MB. Free memory was 51.9MB in the beginning and 67.7MB in the end (delta: -15.8MB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. * TraceAbstraction took 11205.67ms. Allocated memory was 113.2MB in the beginning and 392.2MB in the end (delta: 278.9MB). Free memory was 66.6MB in the beginning and 251.7MB in the end (delta: -185.2MB). Peak memory consumption was 93.3MB. Max. memory is 16.1GB. * Witness Printer took 108.73ms. Allocated memory is still 392.2MB. Free memory was 251.7MB in the beginning and 245.5MB in the end (delta: 6.3MB). 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,"Specification4_spec.i","") [49] - GenericResultAtLocation [Line: 78]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [78] - GenericResultAtLocation [Line: 182]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [182] - GenericResultAtLocation [Line: 217]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [217] - GenericResultAtLocation [Line: 285]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [285] - GenericResultAtLocation [Line: 451]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [451] - GenericResultAtLocation [Line: 545]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [545] - GenericResultAtLocation [Line: 554]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [554] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet11 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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 - CounterExampleResult [Line: 550]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L79] int cleanupTimeShifts = 4; [L292] int pumpRunning = 0; [L293] int systemActive = 1; [L452] int waterLevel = 1; [L453] int methaneLevelCritical = 0; [L724] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L160] int retValue_acc ; [L161] int tmp ; [L165] FCALL select_helpers() [L166] FCALL select_features() [L167] CALL, EXPR valid_product() [L209] int retValue_acc ; [L212] retValue_acc = 1 [L213] return (retValue_acc); [L167] RET, EXPR valid_product() [L167] tmp = valid_product() [L169] COND TRUE \read(tmp) [L171] FCALL setup() [L172] CALL runTest() [L151] CALL test() [L220] int splverifierCounter ; [L221] int tmp ; [L222] int tmp___0 ; [L223] int tmp___1 ; [L224] int tmp___2 ; [L227] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L229] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L231] COND TRUE splverifierCounter < 4 [L237] tmp = __VERIFIER_nondet_int() [L239] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L241] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L470] COND TRUE waterLevel < 2 [L471] waterLevel = waterLevel + 1 [L241] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L247] tmp___0 = __VERIFIER_nondet_int() [L249] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L257] tmp___2 = __VERIFIER_nondet_int() [L259] COND TRUE \read(tmp___2) [L261] CALL startSystem() [L447] systemActive = 1 [L261] RET startSystem() [L274] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L299] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L306] COND TRUE \read(systemActive) [L308] CALL processEnvironment() [L328] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L331] COND TRUE ! pumpRunning [L333] CALL, EXPR isHighWaterLevel() [L425] int retValue_acc ; [L426] int tmp ; [L427] int tmp___0 ; [L431] CALL, EXPR isHighWaterSensorDry() [L532] int retValue_acc ; [L535] COND FALSE !(waterLevel < 2) [L539] retValue_acc = 0 [L540] return (retValue_acc); [L431] RET, EXPR isHighWaterSensorDry() [L431] tmp = isHighWaterSensorDry() [L433] COND FALSE !(\read(tmp)) [L436] tmp___0 = 1 [L438] retValue_acc = tmp___0 [L439] return (retValue_acc); [L333] RET, EXPR isHighWaterLevel() [L333] tmp = isHighWaterLevel() [L335] COND TRUE \read(tmp) [L337] CALL activatePump() [L356] pumpRunning = 1 [L337] RET activatePump() [L308] RET processEnvironment() [L314] CALL __utac_acc__Specification4_spec__1() [L54] int tmp ; [L55] int tmp___0 ; [L59] CALL, EXPR getWaterLevel() [L523] int retValue_acc ; [L526] retValue_acc = waterLevel [L527] return (retValue_acc); [L59] RET, EXPR getWaterLevel() [L59] tmp = getWaterLevel() [L61] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=2, waterLevel=2] [L314] RET __utac_acc__Specification4_spec__1() [L274] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=16, tmp___2=-1, waterLevel=2] [L229] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=16, tmp___2=-1, waterLevel=2] [L231] COND TRUE splverifierCounter < 4 [L237] tmp = __VERIFIER_nondet_int() [L239] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=16, tmp___2=-1, waterLevel=2] [L247] tmp___0 = __VERIFIER_nondet_int() [L249] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=16, tmp___2=-1, waterLevel=2] [L257] tmp___2 = __VERIFIER_nondet_int() [L259] COND FALSE !(\read(tmp___2)) [L265] tmp___1 = __VERIFIER_nondet_int() [L267] COND TRUE \read(tmp___1) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=16, tmp___2=0, waterLevel=2] [L274] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L299] COND TRUE \read(pumpRunning) [L301] CALL lowerWaterLevel() [L458] COND TRUE waterLevel > 0 [L459] waterLevel = waterLevel - 1 [L301] RET lowerWaterLevel() [L306] COND TRUE \read(systemActive) [L308] CALL processEnvironment() [L328] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L331] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L346] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L308] RET processEnvironment() [L314] CALL __utac_acc__Specification4_spec__1() [L54] int tmp ; [L55] int tmp___0 ; [L59] CALL, EXPR getWaterLevel() [L523] int retValue_acc ; [L526] retValue_acc = waterLevel [L527] return (retValue_acc); [L59] RET, EXPR getWaterLevel() [L59] tmp = getWaterLevel() [L61] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L314] RET __utac_acc__Specification4_spec__1() [L274] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=16, tmp___2=0, waterLevel=1] [L229] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=16, tmp___2=0, waterLevel=1] [L231] COND TRUE splverifierCounter < 4 [L237] tmp = __VERIFIER_nondet_int() [L239] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=16, tmp___2=0, waterLevel=1] [L247] tmp___0 = __VERIFIER_nondet_int() [L249] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=16, tmp___2=0, waterLevel=1] [L257] tmp___2 = __VERIFIER_nondet_int() [L259] COND FALSE !(\read(tmp___2)) [L265] tmp___1 = __VERIFIER_nondet_int() [L267] COND TRUE \read(tmp___1) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=16, tmp___2=0, waterLevel=1] [L274] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L299] COND TRUE \read(pumpRunning) [L301] CALL lowerWaterLevel() [L458] COND TRUE waterLevel > 0 [L459] waterLevel = waterLevel - 1 [L301] RET lowerWaterLevel() [L306] COND TRUE \read(systemActive) [L308] CALL processEnvironment() [L328] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L331] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L346] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L308] RET processEnvironment() [L314] CALL __utac_acc__Specification4_spec__1() [L54] int tmp ; [L55] int tmp___0 ; [L59] CALL, EXPR getWaterLevel() [L523] int retValue_acc ; [L526] retValue_acc = waterLevel [L527] return (retValue_acc); [L59] RET, EXPR getWaterLevel() [L59] tmp = getWaterLevel() [L61] COND TRUE tmp == 0 [L63] CALL, EXPR isPumpRunning() [L380] int retValue_acc ; [L383] retValue_acc = pumpRunning [L384] return (retValue_acc); [L63] RET, EXPR isPumpRunning() [L63] tmp___0 = isPumpRunning() [L65] COND TRUE \read(tmp___0) [L67] CALL __automaton_fail() [L550] reach_error() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.0s, OverallIterations: 9, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 380 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 371 mSDsluCounter, 639 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 402 mSDsCounter, 159 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 610 IncrementalHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 159 mSolverCounterUnsat, 237 mSDtfsCounter, 610 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 183 GetRequests, 99 SyntacticMatches, 12 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1126 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=8, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 40 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 294 NumberOfCodeBlocks, 294 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 266 ConstructedInterpolants, 0 QuantifiedInterpolants, 997 SizeOfPredicates, 7 NumberOfNonLiveVariables, 196 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 10 InterpolantComputations, 7 PerfectInterpolantSequences, 46/77 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 RESULT: Ultimate proved your program to be incorrect! [2023-11-21 19:50:06,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d88221d-47b6-437a-9d2c-fe813f4cc3e7/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE