./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product37.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657c9f-8277-4e59-bafc-ac9bb0e99587/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657c9f-8277-4e59-bafc-ac9bb0e99587/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657c9f-8277-4e59-bafc-ac9bb0e99587/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657c9f-8277-4e59-bafc-ac9bb0e99587/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product37.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657c9f-8277-4e59-bafc-ac9bb0e99587/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657c9f-8277-4e59-bafc-ac9bb0e99587/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e3509f37a4190025a6bf9c4e7a81c42e49e3316a9582aab003e20039c8a6c594 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 12:37:56,956 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 12:37:57,026 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657c9f-8277-4e59-bafc-ac9bb0e99587/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 12:37:57,031 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 12:37:57,031 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 12:37:57,054 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 12:37:57,054 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 12:37:57,055 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 12:37:57,056 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 12:37:57,056 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 12:37:57,057 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 12:37:57,057 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 12:37:57,058 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 12:37:57,059 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 12:37:57,059 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 12:37:57,060 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 12:37:57,060 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 12:37:57,061 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 12:37:57,061 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 12:37:57,062 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 12:37:57,062 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 12:37:57,063 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 12:37:57,064 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 12:37:57,064 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 12:37:57,065 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 12:37:57,065 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 12:37:57,066 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 12:37:57,066 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 12:37:57,067 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 12:37:57,067 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 12:37:57,068 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 12:37:57,068 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 12:37:57,068 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 12:37:57,068 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 12:37:57,069 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 12:37:57,069 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 12:37:57,069 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 12:37:57,069 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:37:57,070 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 12:37:57,070 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 12:37:57,070 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 12:37:57,070 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 12:37:57,071 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 12:37:57,071 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 12:37:57,071 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 12:37:57,071 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 12:37:57,071 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 12:37:57,072 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_90657c9f-8277-4e59-bafc-ac9bb0e99587/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657c9f-8277-4e59-bafc-ac9bb0e99587/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3509f37a4190025a6bf9c4e7a81c42e49e3316a9582aab003e20039c8a6c594 [2023-12-02 12:37:57,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 12:37:57,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 12:37:57,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 12:37:57,304 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 12:37:57,305 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 12:37:57,306 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657c9f-8277-4e59-bafc-ac9bb0e99587/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/product-lines/minepump_spec4_product37.cil.c [2023-12-02 12:38:00,165 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 12:38:00,360 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 12:38:00,360 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657c9f-8277-4e59-bafc-ac9bb0e99587/sv-benchmarks/c/product-lines/minepump_spec4_product37.cil.c [2023-12-02 12:38:00,374 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657c9f-8277-4e59-bafc-ac9bb0e99587/bin/utaipan-verify-nQ1chXbOIh/data/98f2bfec8/4026c95daca4448a950b2f8b3ae1d72e/FLAG277b452d9 [2023-12-02 12:38:00,386 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657c9f-8277-4e59-bafc-ac9bb0e99587/bin/utaipan-verify-nQ1chXbOIh/data/98f2bfec8/4026c95daca4448a950b2f8b3ae1d72e [2023-12-02 12:38:00,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 12:38:00,389 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 12:38:00,390 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 12:38:00,390 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 12:38:00,395 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 12:38:00,395 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:38:00" (1/1) ... [2023-12-02 12:38:00,396 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@281021b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:38:00, skipping insertion in model container [2023-12-02 12:38:00,397 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:38:00" (1/1) ... [2023-12-02 12:38:00,440 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 12:38:00,613 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_90657c9f-8277-4e59-bafc-ac9bb0e99587/sv-benchmarks/c/product-lines/minepump_spec4_product37.cil.c[6698,6711] [2023-12-02 12:38:00,676 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:38:00,686 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 12:38:00,694 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [49] [2023-12-02 12:38:00,695 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [87] [2023-12-02 12:38:00,695 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [156] [2023-12-02 12:38:00,696 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [343] [2023-12-02 12:38:00,696 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [439] [2023-12-02 12:38:00,696 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [448] [2023-12-02 12:38:00,696 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [543] [2023-12-02 12:38:00,696 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification4_spec.i","") [909] [2023-12-02 12:38:00,716 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_90657c9f-8277-4e59-bafc-ac9bb0e99587/sv-benchmarks/c/product-lines/minepump_spec4_product37.cil.c[6698,6711] [2023-12-02 12:38:00,756 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 12:38:00,772 INFO L206 MainTranslator]: Completed translation [2023-12-02 12:38:00,773 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:38:00 WrapperNode [2023-12-02 12:38:00,773 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 12:38:00,774 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 12:38:00,774 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 12:38:00,774 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 12:38:00,780 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:38:00" (1/1) ... [2023-12-02 12:38:00,793 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:38:00" (1/1) ... [2023-12-02 12:38:00,818 INFO L138 Inliner]: procedures = 53, calls = 97, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 198 [2023-12-02 12:38:00,819 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 12:38:00,820 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 12:38:00,820 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 12:38:00,820 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 12:38:00,829 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:38:00" (1/1) ... [2023-12-02 12:38:00,829 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:38:00" (1/1) ... [2023-12-02 12:38:00,832 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:38:00" (1/1) ... [2023-12-02 12:38:00,832 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:38:00" (1/1) ... [2023-12-02 12:38:00,838 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:38:00" (1/1) ... [2023-12-02 12:38:00,842 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:38:00" (1/1) ... [2023-12-02 12:38:00,844 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:38:00" (1/1) ... [2023-12-02 12:38:00,845 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:38:00" (1/1) ... [2023-12-02 12:38:00,848 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 12:38:00,849 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 12:38:00,850 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 12:38:00,850 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 12:38:00,850 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:38:00" (1/1) ... [2023-12-02 12:38:00,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 12:38:00,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657c9f-8277-4e59-bafc-ac9bb0e99587/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:38:00,886 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657c9f-8277-4e59-bafc-ac9bb0e99587/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 12:38:00,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657c9f-8277-4e59-bafc-ac9bb0e99587/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 12:38:00,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 12:38:00,920 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-12-02 12:38:00,920 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-12-02 12:38:00,920 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-12-02 12:38:00,920 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-12-02 12:38:00,920 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-12-02 12:38:00,921 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-12-02 12:38:00,921 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-12-02 12:38:00,921 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-12-02 12:38:00,921 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-12-02 12:38:00,921 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-12-02 12:38:00,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 12:38:00,922 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-12-02 12:38:00,922 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-12-02 12:38:00,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 12:38:00,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 12:38:01,005 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 12:38:01,008 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 12:38:01,223 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 12:38:01,321 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 12:38:01,321 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 12:38:01,323 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:38:01 BoogieIcfgContainer [2023-12-02 12:38:01,323 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 12:38:01,326 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 12:38:01,326 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 12:38:01,329 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 12:38:01,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:38:00" (1/3) ... [2023-12-02 12:38:01,330 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ef25876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:38:01, skipping insertion in model container [2023-12-02 12:38:01,330 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:38:00" (2/3) ... [2023-12-02 12:38:01,331 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ef25876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:38:01, skipping insertion in model container [2023-12-02 12:38:01,331 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:38:01" (3/3) ... [2023-12-02 12:38:01,332 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product37.cil.c [2023-12-02 12:38:01,351 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 12:38:01,351 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 12:38:01,394 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 12:38:01,399 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;@70b75031, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 12:38:01,399 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 12:38:01,402 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 33 states have (on average 1.4545454545454546) internal successors, (48), 41 states have internal predecessors, (48), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-02 12:38:01,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 12:38:01,409 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:38:01,409 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:38:01,410 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:38:01,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:38:01,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1272330108, now seen corresponding path program 1 times [2023-12-02 12:38:01,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:38:01,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176892667] [2023-12-02 12:38:01,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:38:01,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:38:01,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:38:01,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:38:01,569 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:38:01,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176892667] [2023-12-02 12:38:01,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176892667] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:38:01,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:38:01,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:38:01,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408958945] [2023-12-02 12:38:01,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:38:01,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 12:38:01,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:38:01,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 12:38:01,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 12:38:01,604 INFO L87 Difference]: Start difference. First operand has 51 states, 33 states have (on average 1.4545454545454546) internal successors, (48), 41 states have internal predecessors, (48), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) 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) [2023-12-02 12:38:01,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:38:01,662 INFO L93 Difference]: Finished difference Result 100 states and 137 transitions. [2023-12-02 12:38:01,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 12:38:01,664 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 [2023-12-02 12:38:01,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:38:01,673 INFO L225 Difference]: With dead ends: 100 [2023-12-02 12:38:01,673 INFO L226 Difference]: Without dead ends: 46 [2023-12-02 12:38:01,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 12:38:01,680 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:38:01,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 12:38:01,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-12-02 12:38:01,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2023-12-02 12:38:01,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 37 states have internal predecessors, (40), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2023-12-02 12:38:01,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 59 transitions. [2023-12-02 12:38:01,742 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 59 transitions. Word has length 12 [2023-12-02 12:38:01,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:38:01,742 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 59 transitions. [2023-12-02 12:38:01,743 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) [2023-12-02 12:38:01,743 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 59 transitions. [2023-12-02 12:38:01,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-02 12:38:01,744 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:38:01,745 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:38:01,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 12:38:01,745 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:38:01,746 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:38:01,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1287588620, now seen corresponding path program 1 times [2023-12-02 12:38:01,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:38:01,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646930059] [2023-12-02 12:38:01,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:38:01,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:38:01,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:38:01,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:38:01,836 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:38:01,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646930059] [2023-12-02 12:38:01,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646930059] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:38:01,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:38:01,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:38:01,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135981693] [2023-12-02 12:38:01,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:38:01,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:38:01,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:38:01,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:38:01,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:38:01,839 INFO L87 Difference]: Start difference. First operand 46 states and 59 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) [2023-12-02 12:38:01,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:38:01,877 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2023-12-02 12:38:01,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:38:01,878 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 [2023-12-02 12:38:01,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:38:01,879 INFO L225 Difference]: With dead ends: 69 [2023-12-02 12:38:01,879 INFO L226 Difference]: Without dead ends: 38 [2023-12-02 12:38:01,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:38:01,881 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 7 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:38:01,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 59 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 12:38:01,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-12-02 12:38:01,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-12-02 12:38:01,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.36) internal successors, (34), 32 states have internal predecessors, (34), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 12:38:01,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2023-12-02 12:38:01,889 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 48 transitions. Word has length 13 [2023-12-02 12:38:01,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:38:01,890 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 48 transitions. [2023-12-02 12:38:01,890 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) [2023-12-02 12:38:01,890 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 48 transitions. [2023-12-02 12:38:01,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 12:38:01,891 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:38:01,891 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:38:01,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 12:38:01,891 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:38:01,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:38:01,892 INFO L85 PathProgramCache]: Analyzing trace with hash 781275366, now seen corresponding path program 1 times [2023-12-02 12:38:01,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:38:01,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400132088] [2023-12-02 12:38:01,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:38:01,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:38:01,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:38:01,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:38:01,999 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:38:01,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400132088] [2023-12-02 12:38:01,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400132088] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:38:01,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:38:01,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 12:38:02,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325288242] [2023-12-02 12:38:02,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:38:02,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:38:02,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:38:02,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:38:02,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 12:38:02,001 INFO L87 Difference]: Start difference. First operand 38 states and 48 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) [2023-12-02 12:38:02,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:38:02,081 INFO L93 Difference]: Finished difference Result 74 states and 95 transitions. [2023-12-02 12:38:02,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 12:38:02,082 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 [2023-12-02 12:38:02,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:38:02,083 INFO L225 Difference]: With dead ends: 74 [2023-12-02 12:38:02,083 INFO L226 Difference]: Without dead ends: 38 [2023-12-02 12:38:02,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 12:38:02,085 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 44 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:38:02,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 41 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 12:38:02,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-12-02 12:38:02,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-12-02 12:38:02,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.32) internal successors, (33), 32 states have internal predecessors, (33), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 5 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 12:38:02,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2023-12-02 12:38:02,094 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 15 [2023-12-02 12:38:02,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:38:02,095 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2023-12-02 12:38:02,095 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) [2023-12-02 12:38:02,095 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2023-12-02 12:38:02,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 12:38:02,096 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:38:02,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:38:02,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 12:38:02,096 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:38:02,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:38:02,097 INFO L85 PathProgramCache]: Analyzing trace with hash 829812010, now seen corresponding path program 1 times [2023-12-02 12:38:02,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:38:02,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420538701] [2023-12-02 12:38:02,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:38:02,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:38:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:38:02,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:38:02,166 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:38:02,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420538701] [2023-12-02 12:38:02,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420538701] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:38:02,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:38:02,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 12:38:02,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607967989] [2023-12-02 12:38:02,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:38:02,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:38:02,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:38:02,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:38:02,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:38:02,169 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 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) [2023-12-02 12:38:02,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:38:02,223 INFO L93 Difference]: Finished difference Result 104 states and 132 transitions. [2023-12-02 12:38:02,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:38:02,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 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 [2023-12-02 12:38:02,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:38:02,225 INFO L225 Difference]: With dead ends: 104 [2023-12-02 12:38:02,226 INFO L226 Difference]: Without dead ends: 68 [2023-12-02 12:38:02,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 12:38:02,228 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 29 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:38:02,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 68 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 12:38:02,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-12-02 12:38:02,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2023-12-02 12:38:02,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 45 states have (on average 1.2666666666666666) internal successors, (57), 52 states have internal predecessors, (57), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2023-12-02 12:38:02,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 81 transitions. [2023-12-02 12:38:02,245 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 81 transitions. Word has length 18 [2023-12-02 12:38:02,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:38:02,245 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 81 transitions. [2023-12-02 12:38:02,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 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) [2023-12-02 12:38:02,245 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 81 transitions. [2023-12-02 12:38:02,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-02 12:38:02,246 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:38:02,246 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:38:02,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 12:38:02,247 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:38:02,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:38:02,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1927569762, now seen corresponding path program 1 times [2023-12-02 12:38:02,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:38:02,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268913089] [2023-12-02 12:38:02,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:38:02,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:38:02,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:38:02,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:38:02,428 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:38:02,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268913089] [2023-12-02 12:38:02,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268913089] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:38:02,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:38:02,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 12:38:02,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325007276] [2023-12-02 12:38:02,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:38:02,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 12:38:02,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:38:02,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 12:38:02,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 12:38:02,430 INFO L87 Difference]: Start difference. First operand 66 states and 81 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 12:38:02,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:38:02,547 INFO L93 Difference]: Finished difference Result 181 states and 222 transitions. [2023-12-02 12:38:02,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 12:38:02,547 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 23 [2023-12-02 12:38:02,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:38:02,549 INFO L225 Difference]: With dead ends: 181 [2023-12-02 12:38:02,549 INFO L226 Difference]: Without dead ends: 117 [2023-12-02 12:38:02,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-12-02 12:38:02,551 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 51 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:38:02,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 109 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 12:38:02,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-12-02 12:38:02,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 103. [2023-12-02 12:38:02,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 70 states have (on average 1.2142857142857142) internal successors, (85), 80 states have internal predecessors, (85), 15 states have call successors, (15), 15 states have call predecessors, (15), 17 states have return successors, (21), 16 states have call predecessors, (21), 15 states have call successors, (21) [2023-12-02 12:38:02,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 121 transitions. [2023-12-02 12:38:02,573 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 121 transitions. Word has length 23 [2023-12-02 12:38:02,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:38:02,574 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 121 transitions. [2023-12-02 12:38:02,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 12:38:02,574 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 121 transitions. [2023-12-02 12:38:02,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-12-02 12:38:02,576 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:38:02,576 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, 1, 1, 1] [2023-12-02 12:38:02,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 12:38:02,577 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:38:02,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:38:02,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1286876557, now seen corresponding path program 1 times [2023-12-02 12:38:02,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:38:02,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944145527] [2023-12-02 12:38:02,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:38:02,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:38:02,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:38:02,670 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-02 12:38:02,671 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:38:02,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944145527] [2023-12-02 12:38:02,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944145527] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:38:02,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:38:02,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 12:38:02,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907627792] [2023-12-02 12:38:02,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:38:02,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:38:02,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:38:02,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:38:02,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 12:38:02,673 INFO L87 Difference]: Start difference. First operand 103 states and 121 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 12:38:02,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:38:02,752 INFO L93 Difference]: Finished difference Result 269 states and 324 transitions. [2023-12-02 12:38:02,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 12:38:02,752 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2023-12-02 12:38:02,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:38:02,755 INFO L225 Difference]: With dead ends: 269 [2023-12-02 12:38:02,755 INFO L226 Difference]: Without dead ends: 205 [2023-12-02 12:38:02,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 12:38:02,757 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 32 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:38:02,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 101 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 12:38:02,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2023-12-02 12:38:02,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 193. [2023-12-02 12:38:02,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 134 states have (on average 1.2164179104477613) internal successors, (163), 149 states have internal predecessors, (163), 27 states have call successors, (27), 27 states have call predecessors, (27), 31 states have return successors, (39), 29 states have call predecessors, (39), 27 states have call successors, (39) [2023-12-02 12:38:02,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 229 transitions. [2023-12-02 12:38:02,794 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 229 transitions. Word has length 39 [2023-12-02 12:38:02,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:38:02,795 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 229 transitions. [2023-12-02 12:38:02,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 12:38:02,795 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 229 transitions. [2023-12-02 12:38:02,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-12-02 12:38:02,797 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:38:02,798 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, 1, 1, 1] [2023-12-02 12:38:02,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 12:38:02,798 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:38:02,798 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:38:02,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1857212849, now seen corresponding path program 1 times [2023-12-02 12:38:02,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:38:02,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042141839] [2023-12-02 12:38:02,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:38:02,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:38:02,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:38:03,082 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:38:03,083 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:38:03,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042141839] [2023-12-02 12:38:03,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042141839] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:38:03,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 12:38:03,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-02 12:38:03,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952941817] [2023-12-02 12:38:03,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:38:03,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 12:38:03,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:38:03,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 12:38:03,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-12-02 12:38:03,085 INFO L87 Difference]: Start difference. First operand 193 states and 229 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 12:38:03,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:38:03,565 INFO L93 Difference]: Finished difference Result 461 states and 564 transitions. [2023-12-02 12:38:03,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-02 12:38:03,566 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2023-12-02 12:38:03,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:38:03,570 INFO L225 Difference]: With dead ends: 461 [2023-12-02 12:38:03,570 INFO L226 Difference]: Without dead ends: 327 [2023-12-02 12:38:03,571 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2023-12-02 12:38:03,572 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 121 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 12:38:03,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 156 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 12:38:03,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2023-12-02 12:38:03,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 319. [2023-12-02 12:38:03,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 226 states have (on average 1.2300884955752212) internal successors, (278), 248 states have internal predecessors, (278), 43 states have call successors, (43), 39 states have call predecessors, (43), 49 states have return successors, (69), 47 states have call predecessors, (69), 43 states have call successors, (69) [2023-12-02 12:38:03,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 390 transitions. [2023-12-02 12:38:03,627 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 390 transitions. Word has length 42 [2023-12-02 12:38:03,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:38:03,627 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 390 transitions. [2023-12-02 12:38:03,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 8 states have internal predecessors, (35), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 12:38:03,628 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 390 transitions. [2023-12-02 12:38:03,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-02 12:38:03,630 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:38:03,630 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:38:03,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-02 12:38:03,631 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:38:03,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:38:03,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1393769389, now seen corresponding path program 1 times [2023-12-02 12:38:03,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:38:03,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294223223] [2023-12-02 12:38:03,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:38:03,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:38:03,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:38:04,096 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:38:04,096 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:38:04,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294223223] [2023-12-02 12:38:04,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294223223] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:38:04,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774059348] [2023-12-02 12:38:04,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:38:04,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:38:04,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657c9f-8277-4e59-bafc-ac9bb0e99587/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:38:04,100 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657c9f-8277-4e59-bafc-ac9bb0e99587/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:38:04,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657c9f-8277-4e59-bafc-ac9bb0e99587/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 12:38:04,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:38:04,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 12:38:04,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:38:04,244 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 12:38:04,244 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:38:04,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774059348] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:38:04,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:38:04,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2023-12-02 12:38:04,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50152967] [2023-12-02 12:38:04,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:38:04,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 12:38:04,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:38:04,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 12:38:04,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2023-12-02 12:38:04,247 INFO L87 Difference]: Start difference. First operand 319 states and 390 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 12:38:04,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:38:04,330 INFO L93 Difference]: Finished difference Result 331 states and 401 transitions. [2023-12-02 12:38:04,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 12:38:04,332 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 45 [2023-12-02 12:38:04,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:38:04,334 INFO L225 Difference]: With dead ends: 331 [2023-12-02 12:38:04,334 INFO L226 Difference]: Without dead ends: 329 [2023-12-02 12:38:04,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2023-12-02 12:38:04,336 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 36 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:38:04,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 100 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 12:38:04,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2023-12-02 12:38:04,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 319. [2023-12-02 12:38:04,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 226 states have (on average 1.2123893805309736) internal successors, (274), 248 states have internal predecessors, (274), 43 states have call successors, (43), 39 states have call predecessors, (43), 49 states have return successors, (69), 47 states have call predecessors, (69), 43 states have call successors, (69) [2023-12-02 12:38:04,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 386 transitions. [2023-12-02 12:38:04,370 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 386 transitions. Word has length 45 [2023-12-02 12:38:04,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:38:04,370 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 386 transitions. [2023-12-02 12:38:04,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 12:38:04,371 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 386 transitions. [2023-12-02 12:38:04,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-02 12:38:04,372 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:38:04,373 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:38:04,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657c9f-8277-4e59-bafc-ac9bb0e99587/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 12:38:04,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657c9f-8277-4e59-bafc-ac9bb0e99587/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:38:04,577 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:38:04,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:38:04,578 INFO L85 PathProgramCache]: Analyzing trace with hash 271405561, now seen corresponding path program 1 times [2023-12-02 12:38:04,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:38:04,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174700668] [2023-12-02 12:38:04,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:38:04,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:38:04,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:38:04,671 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 12:38:04,671 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:38:04,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174700668] [2023-12-02 12:38:04,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174700668] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:38:04,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010549025] [2023-12-02 12:38:04,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:38:04,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:38:04,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657c9f-8277-4e59-bafc-ac9bb0e99587/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:38:04,673 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657c9f-8277-4e59-bafc-ac9bb0e99587/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:38:04,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657c9f-8277-4e59-bafc-ac9bb0e99587/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 12:38:04,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:38:04,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 12:38:04,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:38:04,820 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 12:38:04,821 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 12:38:04,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010549025] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 12:38:04,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 12:38:04,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-12-02 12:38:04,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703989230] [2023-12-02 12:38:04,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 12:38:04,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 12:38:04,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:38:04,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 12:38:04,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 12:38:04,823 INFO L87 Difference]: Start difference. First operand 319 states and 386 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 12:38:04,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:38:04,909 INFO L93 Difference]: Finished difference Result 470 states and 586 transitions. [2023-12-02 12:38:04,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 12:38:04,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2023-12-02 12:38:04,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:38:04,912 INFO L225 Difference]: With dead ends: 470 [2023-12-02 12:38:04,912 INFO L226 Difference]: Without dead ends: 275 [2023-12-02 12:38:04,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-12-02 12:38:04,914 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 21 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 12:38:04,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 74 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 12:38:04,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2023-12-02 12:38:04,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 262. [2023-12-02 12:38:04,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 185 states have (on average 1.1783783783783783) internal successors, (218), 202 states have internal predecessors, (218), 35 states have call successors, (35), 34 states have call predecessors, (35), 41 states have return successors, (43), 39 states have call predecessors, (43), 35 states have call successors, (43) [2023-12-02 12:38:04,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 296 transitions. [2023-12-02 12:38:04,952 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 296 transitions. Word has length 47 [2023-12-02 12:38:04,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:38:04,952 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 296 transitions. [2023-12-02 12:38:04,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-12-02 12:38:04,952 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 296 transitions. [2023-12-02 12:38:04,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-02 12:38:04,953 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:38:04,954 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:38:04,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657c9f-8277-4e59-bafc-ac9bb0e99587/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-02 12:38:05,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657c9f-8277-4e59-bafc-ac9bb0e99587/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-12-02 12:38:05,156 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:38:05,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:38:05,156 INFO L85 PathProgramCache]: Analyzing trace with hash -149040105, now seen corresponding path program 1 times [2023-12-02 12:38:05,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:38:05,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520399320] [2023-12-02 12:38:05,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:38:05,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:38:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:38:05,509 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 12:38:05,509 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 12:38:05,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520399320] [2023-12-02 12:38:05,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520399320] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 12:38:05,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853467163] [2023-12-02 12:38:05,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:38:05,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 12:38:05,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657c9f-8277-4e59-bafc-ac9bb0e99587/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 12:38:05,510 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657c9f-8277-4e59-bafc-ac9bb0e99587/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 12:38:05,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657c9f-8277-4e59-bafc-ac9bb0e99587/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 12:38:05,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 12:38:05,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 31 conjunts are in the unsatisfiable core [2023-12-02 12:38:05,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 12:38:05,901 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 12:38:05,901 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 12:38:06,331 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 12:38:06,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853467163] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 12:38:06,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [620224011] [2023-12-02 12:38:06,349 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2023-12-02 12:38:06,349 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 12:38:06,352 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 12:38:06,356 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 12:38:06,356 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 12:38:09,580 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 141 for LOIs [2023-12-02 12:38:09,655 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 24 for LOIs [2023-12-02 12:38:09,758 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 34 for LOIs [2023-12-02 12:38:09,820 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 26 for LOIs [2023-12-02 12:38:09,824 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 12:38:13,083 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5230#(and (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~2#1|) (<= |timeShift_isPumpRunning_#res#1| 2147483647) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~2#1| 0)) (= |timeShift_isPumpRunning_#res#1| ~pumpRunning~0) (= |timeShift_getWaterLevel_#res#1| 0) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~8#1| 0) (= ~waterLevel~0 0) (<= 0 (+ |timeShift_isPumpRunning_#res#1| 2147483648)))' at error location [2023-12-02 12:38:13,083 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 12:38:13,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 12:38:13,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 13] total 33 [2023-12-02 12:38:13,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894215636] [2023-12-02 12:38:13,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 12:38:13,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-02 12:38:13,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 12:38:13,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-02 12:38:13,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=2988, Unknown=0, NotChecked=0, Total=3306 [2023-12-02 12:38:13,088 INFO L87 Difference]: Start difference. First operand 262 states and 296 transitions. Second operand has 33 states, 30 states have (on average 3.2666666666666666) internal successors, (98), 31 states have internal predecessors, (98), 13 states have call successors, (17), 9 states have call predecessors, (17), 9 states have return successors, (14), 12 states have call predecessors, (14), 11 states have call successors, (14) [2023-12-02 12:38:16,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 12:38:16,295 INFO L93 Difference]: Finished difference Result 890 states and 1060 transitions. [2023-12-02 12:38:16,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-12-02 12:38:16,296 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 30 states have (on average 3.2666666666666666) internal successors, (98), 31 states have internal predecessors, (98), 13 states have call successors, (17), 9 states have call predecessors, (17), 9 states have return successors, (14), 12 states have call predecessors, (14), 11 states have call successors, (14) Word has length 50 [2023-12-02 12:38:16,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 12:38:16,300 INFO L225 Difference]: With dead ends: 890 [2023-12-02 12:38:16,301 INFO L226 Difference]: Without dead ends: 760 [2023-12-02 12:38:16,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 117 SyntacticMatches, 2 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5908 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1785, Invalid=15245, Unknown=0, NotChecked=0, Total=17030 [2023-12-02 12:38:16,308 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 1133 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 1669 mSolverCounterSat, 665 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1141 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 2334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 665 IncrementalHoareTripleChecker+Valid, 1669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 12:38:16,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1141 Valid, 801 Invalid, 2334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [665 Valid, 1669 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 12:38:16,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2023-12-02 12:38:16,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 454. [2023-12-02 12:38:16,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 321 states have (on average 1.161993769470405) internal successors, (373), 349 states have internal predecessors, (373), 60 states have call successors, (60), 58 states have call predecessors, (60), 72 states have return successors, (82), 66 states have call predecessors, (82), 60 states have call successors, (82) [2023-12-02 12:38:16,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 515 transitions. [2023-12-02 12:38:16,362 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 515 transitions. Word has length 50 [2023-12-02 12:38:16,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 12:38:16,362 INFO L495 AbstractCegarLoop]: Abstraction has 454 states and 515 transitions. [2023-12-02 12:38:16,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 30 states have (on average 3.2666666666666666) internal successors, (98), 31 states have internal predecessors, (98), 13 states have call successors, (17), 9 states have call predecessors, (17), 9 states have return successors, (14), 12 states have call predecessors, (14), 11 states have call successors, (14) [2023-12-02 12:38:16,363 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 515 transitions. [2023-12-02 12:38:16,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-02 12:38:16,364 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 12:38:16,365 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:38:16,369 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657c9f-8277-4e59-bafc-ac9bb0e99587/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 12:38:16,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657c9f-8277-4e59-bafc-ac9bb0e99587/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 12:38:16,565 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 12:38:16,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 12:38:16,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1015271726, now seen corresponding path program 2 times [2023-12-02 12:38:16,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 12:38:16,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201011361] [2023-12-02 12:38:16,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 12:38:16,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 12:38:16,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 12:38:16,582 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 12:38:16,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 12:38:16,624 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 12:38:16,624 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 12:38:16,625 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 12:38:16,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-02 12:38:16,628 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 12:38:16,631 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 12:38:16,663 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-12-02 12:38:16,666 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-12-02 12:38:16,667 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-12-02 12:38:16,667 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-12-02 12:38:16,668 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-12-02 12:38:16,668 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-12-02 12:38:16,671 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-12-02 12:38:16,671 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-12-02 12:38:16,672 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-12-02 12:38:16,672 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-12-02 12:38:16,673 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-12-02 12:38:16,693 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 12:38:16 BoogieIcfgContainer [2023-12-02 12:38:16,693 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 12:38:16,694 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 12:38:16,694 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 12:38:16,694 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 12:38:16,694 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:38:01" (3/4) ... [2023-12-02 12:38:16,695 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-12-02 12:38:16,707 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-12-02 12:38:16,709 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-12-02 12:38:16,709 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-12-02 12:38:16,709 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-12-02 12:38:16,709 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-12-02 12:38:16,710 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-12-02 12:38:16,711 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-12-02 12:38:16,712 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-12-02 12:38:16,712 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-12-02 12:38:16,712 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-12-02 12:38:16,712 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-12-02 12:38:16,765 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657c9f-8277-4e59-bafc-ac9bb0e99587/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 12:38:16,765 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 12:38:16,766 INFO L158 Benchmark]: Toolchain (without parser) took 16376.89ms. Allocated memory was 167.8MB in the beginning and 520.1MB in the end (delta: 352.3MB). Free memory was 129.5MB in the beginning and 417.0MB in the end (delta: -287.5MB). Peak memory consumption was 65.7MB. Max. memory is 16.1GB. [2023-12-02 12:38:16,766 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 115.3MB. Free memory was 84.1MB in the beginning and 84.1MB in the end (delta: 30.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 12:38:16,767 INFO L158 Benchmark]: CACSL2BoogieTranslator took 383.13ms. Allocated memory is still 167.8MB. Free memory was 128.7MB in the beginning and 109.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-12-02 12:38:16,767 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.10ms. Allocated memory is still 167.8MB. Free memory was 109.7MB in the beginning and 107.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 12:38:16,767 INFO L158 Benchmark]: Boogie Preprocessor took 29.08ms. Allocated memory is still 167.8MB. Free memory was 107.7MB in the beginning and 106.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 12:38:16,768 INFO L158 Benchmark]: RCFGBuilder took 473.93ms. Allocated memory is still 167.8MB. Free memory was 106.5MB in the beginning and 81.3MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-12-02 12:38:16,768 INFO L158 Benchmark]: TraceAbstraction took 15367.14ms. Allocated memory was 167.8MB in the beginning and 520.1MB in the end (delta: 352.3MB). Free memory was 80.4MB in the beginning and 424.4MB in the end (delta: -344.0MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. [2023-12-02 12:38:16,768 INFO L158 Benchmark]: Witness Printer took 71.74ms. Allocated memory is still 520.1MB. Free memory was 423.3MB in the beginning and 417.0MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-12-02 12:38:16,770 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 115.3MB. Free memory was 84.1MB in the beginning and 84.1MB in the end (delta: 30.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 383.13ms. Allocated memory is still 167.8MB. Free memory was 128.7MB in the beginning and 109.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.10ms. Allocated memory is still 167.8MB. Free memory was 109.7MB in the beginning and 107.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.08ms. Allocated memory is still 167.8MB. Free memory was 107.7MB in the beginning and 106.5MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 473.93ms. Allocated memory is still 167.8MB. Free memory was 106.5MB in the beginning and 81.3MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 15367.14ms. Allocated memory was 167.8MB in the beginning and 520.1MB in the end (delta: 352.3MB). Free memory was 80.4MB in the beginning and 424.4MB in the end (delta: -344.0MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. * Witness Printer took 71.74ms. Allocated memory is still 520.1MB. Free memory was 423.3MB in the beginning and 417.0MB 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,"featureselect.i","") [49] - GenericResultAtLocation [Line: 87]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [87] - GenericResultAtLocation [Line: 156]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [156] - GenericResultAtLocation [Line: 343]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [343] - GenericResultAtLocation [Line: 439]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [439] - GenericResultAtLocation [Line: 448]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [448] - GenericResultAtLocation [Line: 543]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [543] - GenericResultAtLocation [Line: 909]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification4_spec.i","") [909] - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet8 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: 444]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L165] int pumpRunning = 0; [L166] int systemActive = 1; [L344] int cleanupTimeShifts = 4; [L450] int waterLevel = 1; [L451] int methaneLevelCritical = 0; [L713] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L417] int retValue_acc ; [L418] int tmp ; [L422] FCALL select_helpers() [L423] FCALL select_features() [L424] CALL, EXPR valid_product() [L79] int retValue_acc ; [L82] retValue_acc = 1 [L83] return (retValue_acc); [L424] RET, EXPR valid_product() [L424] tmp = valid_product() [L426] COND TRUE \read(tmp) [L428] FCALL setup() [L429] CALL runTest() [L411] CALL test() [L93] int splverifierCounter ; [L94] int tmp ; [L95] int tmp___0 ; [L96] int tmp___1 ; [L97] int tmp___2 ; [L100] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L102] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L104] COND TRUE splverifierCounter < 4 [L110] tmp = __VERIFIER_nondet_int() [L112] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L114] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L468] COND TRUE waterLevel < 2 [L469] waterLevel = waterLevel + 1 [L114] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L120] tmp___0 = __VERIFIER_nondet_int() [L122] 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] [L130] tmp___2 = __VERIFIER_nondet_int() [L132] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=1, tmp___2=1, waterLevel=2] [L145] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L173] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L180] COND TRUE \read(systemActive) [L182] CALL processEnvironment() [L228] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L231] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L246] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L202] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L205] COND TRUE ! pumpRunning [L207] CALL, EXPR isHighWaterLevel() [L325] int retValue_acc ; [L326] int tmp ; [L327] int tmp___0 ; [L331] CALL, EXPR isHighWaterSensorDry() [L530] int retValue_acc ; [L533] COND FALSE !(waterLevel < 2) [L537] retValue_acc = 0 [L538] return (retValue_acc); [L331] RET, EXPR isHighWaterSensorDry() [L331] tmp = isHighWaterSensorDry() [L333] COND FALSE !(\read(tmp)) [L336] tmp___0 = 1 [L338] retValue_acc = tmp___0 [L339] return (retValue_acc); [L207] RET, EXPR isHighWaterLevel() [L207] tmp = isHighWaterLevel() [L209] COND TRUE \read(tmp) [L211] CALL activatePump() [L256] pumpRunning = 1 [L211] RET activatePump() [L246] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L182] RET processEnvironment() [L188] CALL __utac_acc__Specification4_spec__1() [L911] int tmp ; [L912] int tmp___0 ; [L916] CALL, EXPR getWaterLevel() [L521] int retValue_acc ; [L524] retValue_acc = waterLevel [L525] return (retValue_acc); [L916] RET, EXPR getWaterLevel() [L916] tmp = getWaterLevel() [L918] 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] [L188] RET __utac_acc__Specification4_spec__1() [L145] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=1, tmp___2=1, waterLevel=2] [L102] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, tmp___1=1, tmp___2=1, waterLevel=2] [L104] COND TRUE splverifierCounter < 4 [L110] tmp = __VERIFIER_nondet_int() [L112] 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=1, tmp___2=1, waterLevel=2] [L120] tmp___0 = __VERIFIER_nondet_int() [L122] 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=1, tmp___2=1, waterLevel=2] [L130] tmp___2 = __VERIFIER_nondet_int() [L132] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=1, tmp___2=1, waterLevel=2] [L145] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L173] COND TRUE \read(pumpRunning) [L175] CALL lowerWaterLevel() [L456] COND TRUE waterLevel > 0 [L457] waterLevel = waterLevel - 1 [L175] RET lowerWaterLevel() [L180] COND TRUE \read(systemActive) [L182] CALL processEnvironment() [L228] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L231] COND TRUE \read(pumpRunning) [L233] CALL, EXPR isMethaneAlarm() [L269] int retValue_acc ; [L273] CALL, EXPR isMethaneLevelCritical() [L489] int retValue_acc ; [L492] retValue_acc = methaneLevelCritical [L493] return (retValue_acc); [L273] RET, EXPR isMethaneLevelCritical() [L273] retValue_acc = isMethaneLevelCritical() [L275] return (retValue_acc); [L233] RET, EXPR isMethaneAlarm() [L233] tmp = isMethaneAlarm() [L235] COND FALSE !(\read(tmp)) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=1] [L241] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L202] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L205] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L220] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L241] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=1] [L182] RET processEnvironment() [L188] CALL __utac_acc__Specification4_spec__1() [L911] int tmp ; [L912] int tmp___0 ; [L916] CALL, EXPR getWaterLevel() [L521] int retValue_acc ; [L524] retValue_acc = waterLevel [L525] return (retValue_acc); [L916] RET, EXPR getWaterLevel() [L916] tmp = getWaterLevel() [L918] 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] [L188] RET __utac_acc__Specification4_spec__1() [L145] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=1, tmp___2=1, waterLevel=1] [L102] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=1, tmp___2=1, waterLevel=1] [L104] COND TRUE splverifierCounter < 4 [L110] tmp = __VERIFIER_nondet_int() [L112] 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=1, tmp___2=1, waterLevel=1] [L120] tmp___0 = __VERIFIER_nondet_int() [L122] 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=1, tmp___2=1, waterLevel=1] [L130] tmp___2 = __VERIFIER_nondet_int() [L132] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=1, tmp___2=1, waterLevel=1] [L145] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L173] COND TRUE \read(pumpRunning) [L175] CALL lowerWaterLevel() [L456] COND TRUE waterLevel > 0 [L457] waterLevel = waterLevel - 1 [L175] RET lowerWaterLevel() [L180] COND TRUE \read(systemActive) [L182] CALL processEnvironment() [L228] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L231] COND TRUE \read(pumpRunning) [L233] CALL, EXPR isMethaneAlarm() [L269] int retValue_acc ; [L273] CALL, EXPR isMethaneLevelCritical() [L489] int retValue_acc ; [L492] retValue_acc = methaneLevelCritical [L493] return (retValue_acc); [L273] RET, EXPR isMethaneLevelCritical() [L273] retValue_acc = isMethaneLevelCritical() [L275] return (retValue_acc); [L233] RET, EXPR isMethaneAlarm() [L233] tmp = isMethaneAlarm() [L235] COND FALSE !(\read(tmp)) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L241] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L202] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L205] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L220] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L241] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L182] RET processEnvironment() [L188] CALL __utac_acc__Specification4_spec__1() [L911] int tmp ; [L912] int tmp___0 ; [L916] CALL, EXPR getWaterLevel() [L521] int retValue_acc ; [L524] retValue_acc = waterLevel [L525] return (retValue_acc); [L916] RET, EXPR getWaterLevel() [L916] tmp = getWaterLevel() [L918] COND TRUE tmp == 0 [L920] CALL, EXPR isPumpRunning() [L280] int retValue_acc ; [L283] retValue_acc = pumpRunning [L284] return (retValue_acc); [L920] RET, EXPR isPumpRunning() [L920] tmp___0 = isPumpRunning() [L922] COND TRUE \read(tmp___0) [L924] CALL __automaton_fail() [L444] 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 7 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 15.2s, OverallIterations: 11, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1493 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1474 mSDsluCounter, 1557 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1149 mSDsCounter, 757 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2257 IncrementalHoareTripleChecker+Invalid, 3014 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 757 mSolverCounterUnsat, 408 mSDtfsCounter, 2257 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 404 GetRequests, 227 SyntacticMatches, 2 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5990 ImplicationChecksByTransitivity, 6.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=454occurred in iteration=10, InterpolantAutomatonStates: 128, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 365 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 520 NumberOfCodeBlocks, 520 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 482 ConstructedInterpolants, 0 QuantifiedInterpolants, 1732 SizeOfPredicates, 12 NumberOfNonLiveVariables, 658 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 14 InterpolantComputations, 9 PerfectInterpolantSequences, 97/141 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! [2023-12-02 12:38:16,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_90657c9f-8277-4e59-bafc-ac9bb0e99587/bin/utaipan-verify-nQ1chXbOIh/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