./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 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484a40b3-9009-4f78-8147-06e161d09040/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484a40b3-9009-4f78-8147-06e161d09040/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484a40b3-9009-4f78-8147-06e161d09040/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484a40b3-9009-4f78-8147-06e161d09040/bin/utaipan-verify-QoSU8krkJ5/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_484a40b3-9009-4f78-8147-06e161d09040/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484a40b3-9009-4f78-8147-06e161d09040/bin/utaipan-verify-QoSU8krkJ5 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e3509f37a4190025a6bf9c4e7a81c42e49e3316a9582aab003e20039c8a6c594 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:45:20,928 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:45:21,045 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484a40b3-9009-4f78-8147-06e161d09040/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-21 19:45:21,055 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:45:21,056 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:45:21,104 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:45:21,105 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:45:21,105 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:45:21,106 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:45:21,111 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:45:21,112 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:45:21,112 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:45:21,113 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:45:21,115 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 19:45:21,115 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:45:21,116 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:45:21,116 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 19:45:21,116 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 19:45:21,117 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:45:21,118 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 19:45:21,118 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 19:45:21,119 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 19:45:21,120 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:45:21,120 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 19:45:21,121 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 19:45:21,121 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:45:21,122 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 19:45:21,122 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:45:21,122 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 19:45:21,123 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:45:21,124 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 19:45:21,124 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 19:45:21,125 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 19:45:21,125 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:45:21,125 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:45:21,126 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:45:21,126 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:45:21,126 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:45:21,126 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:45:21,127 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:45:21,127 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 19:45:21,127 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 19:45:21,127 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 19:45:21,128 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:45:21,128 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 19:45:21,129 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:45:21,129 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:45:21,129 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_484a40b3-9009-4f78-8147-06e161d09040/bin/utaipan-verify-QoSU8krkJ5/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484a40b3-9009-4f78-8147-06e161d09040/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3509f37a4190025a6bf9c4e7a81c42e49e3316a9582aab003e20039c8a6c594 [2023-11-21 19:45:21,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:45:21,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:45:21,522 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:45:21,524 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:45:21,525 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:45:21,526 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484a40b3-9009-4f78-8147-06e161d09040/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/product-lines/minepump_spec4_product37.cil.c [2023-11-21 19:45:24,958 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:45:25,303 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:45:25,304 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484a40b3-9009-4f78-8147-06e161d09040/sv-benchmarks/c/product-lines/minepump_spec4_product37.cil.c [2023-11-21 19:45:25,335 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484a40b3-9009-4f78-8147-06e161d09040/bin/utaipan-verify-QoSU8krkJ5/data/fc7499f13/985e8e888fb347dd811ae5035ae885f2/FLAGb05e86cf9 [2023-11-21 19:45:25,350 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484a40b3-9009-4f78-8147-06e161d09040/bin/utaipan-verify-QoSU8krkJ5/data/fc7499f13/985e8e888fb347dd811ae5035ae885f2 [2023-11-21 19:45:25,353 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:45:25,355 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:45:25,357 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:45:25,357 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:45:25,363 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:45:25,364 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:45:25" (1/1) ... [2023-11-21 19:45:25,365 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fe0553e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:45:25, skipping insertion in model container [2023-11-21 19:45:25,365 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:45:25" (1/1) ... [2023-11-21 19:45:25,484 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:45:25,696 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_484a40b3-9009-4f78-8147-06e161d09040/sv-benchmarks/c/product-lines/minepump_spec4_product37.cil.c[6698,6711] [2023-11-21 19:45:25,805 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:45:25,817 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:45:25,828 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [49] [2023-11-21 19:45:25,830 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [87] [2023-11-21 19:45:25,830 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [156] [2023-11-21 19:45:25,830 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [343] [2023-11-21 19:45:25,830 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [439] [2023-11-21 19:45:25,831 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [448] [2023-11-21 19:45:25,831 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [543] [2023-11-21 19:45:25,831 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification4_spec.i","") [909] [2023-11-21 19:45:25,865 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_484a40b3-9009-4f78-8147-06e161d09040/sv-benchmarks/c/product-lines/minepump_spec4_product37.cil.c[6698,6711] [2023-11-21 19:45:25,906 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:45:25,954 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:45:25,955 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:45:25 WrapperNode [2023-11-21 19:45:25,955 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:45:25,956 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:45:25,956 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:45:25,956 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:45:25,962 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:45:25" (1/1) ... [2023-11-21 19:45:25,978 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:45:25" (1/1) ... [2023-11-21 19:45:26,010 INFO L138 Inliner]: procedures = 53, calls = 97, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 198 [2023-11-21 19:45:26,016 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:45:26,017 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:45:26,018 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:45:26,018 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:45:26,032 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:45:25" (1/1) ... [2023-11-21 19:45:26,032 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:45:25" (1/1) ... [2023-11-21 19:45:26,045 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:45:25" (1/1) ... [2023-11-21 19:45:26,045 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:45:25" (1/1) ... [2023-11-21 19:45:26,055 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:45:25" (1/1) ... [2023-11-21 19:45:26,061 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:45:25" (1/1) ... [2023-11-21 19:45:26,063 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:45:25" (1/1) ... [2023-11-21 19:45:26,064 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:45:25" (1/1) ... [2023-11-21 19:45:26,067 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:45:26,068 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:45:26,069 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:45:26,069 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:45:26,070 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:45:25" (1/1) ... [2023-11-21 19:45:26,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:45:26,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484a40b3-9009-4f78-8147-06e161d09040/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:45:26,119 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484a40b3-9009-4f78-8147-06e161d09040/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:45:26,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484a40b3-9009-4f78-8147-06e161d09040/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:45:26,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:45:26,171 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-11-21 19:45:26,171 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-11-21 19:45:26,171 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-21 19:45:26,171 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-21 19:45:26,171 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-21 19:45:26,172 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-21 19:45:26,172 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-11-21 19:45:26,172 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-11-21 19:45:26,172 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-11-21 19:45:26,172 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-11-21 19:45:26,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 19:45:26,173 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-11-21 19:45:26,173 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-11-21 19:45:26,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:45:26,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:45:26,280 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:45:26,283 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:45:26,711 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:45:26,914 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:45:26,914 INFO L308 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-21 19:45:26,916 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:45:26 BoogieIcfgContainer [2023-11-21 19:45:26,917 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:45:26,921 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:45:26,922 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:45:26,925 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:45:26,926 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:45:25" (1/3) ... [2023-11-21 19:45:26,926 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40824045 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:45:26, skipping insertion in model container [2023-11-21 19:45:26,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:45:25" (2/3) ... [2023-11-21 19:45:26,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40824045 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:45:26, skipping insertion in model container [2023-11-21 19:45:26,929 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:45:26" (3/3) ... [2023-11-21 19:45:26,930 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product37.cil.c [2023-11-21 19:45:26,957 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:45:26,957 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 19:45:27,015 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:45:27,022 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;@398b8b80, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:45:27,022 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 19:45:27,027 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) [2023-11-21 19:45:27,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-21 19:45:27,035 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:45:27,036 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:45:27,036 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:45:27,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:45:27,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1272330108, now seen corresponding path program 1 times [2023-11-21 19:45:27,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:45:27,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67188440] [2023-11-21 19:45:27,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:45:27,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:45:27,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:45:27,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:45:27,263 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:45:27,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67188440] [2023-11-21 19:45:27,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67188440] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:45:27,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:45:27,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:45:27,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627573882] [2023-11-21 19:45:27,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:45:27,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-21 19:45:27,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:45:27,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-21 19:45:27,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-21 19:45:27,311 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) [2023-11-21 19:45:27,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:45:27,379 INFO L93 Difference]: Finished difference Result 100 states and 137 transitions. [2023-11-21 19:45:27,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 19:45:27,382 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-21 19:45:27,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:45:27,392 INFO L225 Difference]: With dead ends: 100 [2023-11-21 19:45:27,392 INFO L226 Difference]: Without dead ends: 46 [2023-11-21 19:45:27,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-21 19:45:27,401 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 [2023-11-21 19:45:27,402 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] [2023-11-21 19:45:27,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-11-21 19:45:27,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2023-11-21 19:45:27,447 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) [2023-11-21 19:45:27,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 59 transitions. [2023-11-21 19:45:27,451 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 59 transitions. Word has length 12 [2023-11-21 19:45:27,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:45:27,451 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 59 transitions. [2023-11-21 19:45:27,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:45:27,452 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 59 transitions. [2023-11-21 19:45:27,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-21 19:45:27,454 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:45:27,454 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:45:27,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 19:45:27,455 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:45:27,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:45:27,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1287588620, now seen corresponding path program 1 times [2023-11-21 19:45:27,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:45:27,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508632423] [2023-11-21 19:45:27,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:45:27,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:45:27,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:45:27,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:45:27,555 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:45:27,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508632423] [2023-11-21 19:45:27,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508632423] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:45:27,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:45:27,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:45:27,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316673748] [2023-11-21 19:45:27,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:45:27,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:45:27,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:45:27,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:45:27,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:45:27,559 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) [2023-11-21 19:45:27,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:45:27,602 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2023-11-21 19:45:27,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:45:27,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-21 19:45:27,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:45:27,605 INFO L225 Difference]: With dead ends: 69 [2023-11-21 19:45:27,605 INFO L226 Difference]: Without dead ends: 38 [2023-11-21 19:45:27,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:45:27,608 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 [2023-11-21 19:45:27,609 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] [2023-11-21 19:45:27,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-11-21 19:45:27,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-11-21 19:45:27,616 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) [2023-11-21 19:45:27,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2023-11-21 19:45:27,618 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 48 transitions. Word has length 13 [2023-11-21 19:45:27,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:45:27,619 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 48 transitions. [2023-11-21 19:45:27,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:45:27,619 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 48 transitions. [2023-11-21 19:45:27,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-21 19:45:27,620 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:45:27,620 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:45:27,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 19:45:27,621 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:45:27,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:45:27,622 INFO L85 PathProgramCache]: Analyzing trace with hash 781275366, now seen corresponding path program 1 times [2023-11-21 19:45:27,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:45:27,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258750112] [2023-11-21 19:45:27,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:45:27,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:45:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:45:27,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:45:27,825 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:45:27,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258750112] [2023-11-21 19:45:27,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258750112] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:45:27,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:45:27,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 19:45:27,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302824483] [2023-11-21 19:45:27,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:45:27,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:45:27,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:45:27,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:45:27,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:45:27,829 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) [2023-11-21 19:45:27,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:45:27,929 INFO L93 Difference]: Finished difference Result 74 states and 95 transitions. [2023-11-21 19:45:27,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 19:45:27,930 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-21 19:45:27,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:45:27,931 INFO L225 Difference]: With dead ends: 74 [2023-11-21 19:45:27,932 INFO L226 Difference]: Without dead ends: 38 [2023-11-21 19:45:27,932 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 [2023-11-21 19:45:27,934 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 44 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2023-11-21 19:45:27,935 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] [2023-11-21 19:45:27,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-11-21 19:45:27,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-11-21 19:45:27,948 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) [2023-11-21 19:45:27,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2023-11-21 19:45:27,955 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 15 [2023-11-21 19:45:27,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:45:27,957 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2023-11-21 19:45:27,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 19:45:27,957 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2023-11-21 19:45:27,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-21 19:45:27,960 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:45:27,961 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:45:27,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 19:45:27,961 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:45:27,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:45:27,967 INFO L85 PathProgramCache]: Analyzing trace with hash 829812010, now seen corresponding path program 1 times [2023-11-21 19:45:27,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:45:27,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194850147] [2023-11-21 19:45:27,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:45:27,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:45:28,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:45:28,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:45:28,135 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:45:28,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194850147] [2023-11-21 19:45:28,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194850147] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:45:28,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:45:28,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:45:28,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787331967] [2023-11-21 19:45:28,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:45:28,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 19:45:28,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:45:28,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 19:45:28,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:45:28,138 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) [2023-11-21 19:45:28,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:45:28,249 INFO L93 Difference]: Finished difference Result 104 states and 132 transitions. [2023-11-21 19:45:28,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 19:45:28,250 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 [2023-11-21 19:45:28,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:45:28,251 INFO L225 Difference]: With dead ends: 104 [2023-11-21 19:45:28,252 INFO L226 Difference]: Without dead ends: 68 [2023-11-21 19:45:28,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 19:45:28,255 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 29 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:45:28,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 68 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:45:28,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-11-21 19:45:28,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 66. [2023-11-21 19:45:28,276 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) [2023-11-21 19:45:28,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 81 transitions. [2023-11-21 19:45:28,278 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 81 transitions. Word has length 18 [2023-11-21 19:45:28,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:45:28,279 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 81 transitions. [2023-11-21 19:45:28,279 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) [2023-11-21 19:45:28,280 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 81 transitions. [2023-11-21 19:45:28,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-21 19:45:28,281 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:45:28,281 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] [2023-11-21 19:45:28,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 19:45:28,282 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:45:28,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:45:28,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1927569762, now seen corresponding path program 1 times [2023-11-21 19:45:28,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:45:28,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017078927] [2023-11-21 19:45:28,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:45:28,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:45:28,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:45:28,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:45:28,572 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:45:28,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017078927] [2023-11-21 19:45:28,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017078927] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:45:28,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:45:28,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 19:45:28,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431991606] [2023-11-21 19:45:28,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:45:28,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 19:45:28,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:45:28,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 19:45:28,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:45:28,576 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) [2023-11-21 19:45:28,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:45:28,723 INFO L93 Difference]: Finished difference Result 181 states and 222 transitions. [2023-11-21 19:45:28,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 19:45:28,724 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 [2023-11-21 19:45:28,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:45:28,726 INFO L225 Difference]: With dead ends: 181 [2023-11-21 19:45:28,726 INFO L226 Difference]: Without dead ends: 117 [2023-11-21 19:45:28,728 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 [2023-11-21 19:45:28,731 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 [2023-11-21 19:45:28,734 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] [2023-11-21 19:45:28,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-11-21 19:45:28,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 103. [2023-11-21 19:45:28,772 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) [2023-11-21 19:45:28,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 121 transitions. [2023-11-21 19:45:28,774 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 121 transitions. Word has length 23 [2023-11-21 19:45:28,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:45:28,775 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 121 transitions. [2023-11-21 19:45:28,775 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) [2023-11-21 19:45:28,776 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 121 transitions. [2023-11-21 19:45:28,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-21 19:45:28,778 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:45:28,778 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] [2023-11-21 19:45:28,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 19:45:28,779 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:45:28,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:45:28,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1286876557, now seen corresponding path program 1 times [2023-11-21 19:45:28,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:45:28,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658787201] [2023-11-21 19:45:28,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:45:28,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:45:28,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:45:28,951 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-21 19:45:28,952 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:45:28,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658787201] [2023-11-21 19:45:28,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658787201] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:45:28,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:45:28,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 19:45:28,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138164011] [2023-11-21 19:45:28,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:45:28,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:45:28,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:45:28,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:45:28,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:45:28,964 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) [2023-11-21 19:45:29,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:45:29,056 INFO L93 Difference]: Finished difference Result 269 states and 324 transitions. [2023-11-21 19:45:29,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 19:45:29,057 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 [2023-11-21 19:45:29,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:45:29,059 INFO L225 Difference]: With dead ends: 269 [2023-11-21 19:45:29,060 INFO L226 Difference]: Without dead ends: 205 [2023-11-21 19:45:29,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:45:29,062 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, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:45:29,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 101 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:45:29,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2023-11-21 19:45:29,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 193. [2023-11-21 19:45:29,098 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) [2023-11-21 19:45:29,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 229 transitions. [2023-11-21 19:45:29,100 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 229 transitions. Word has length 39 [2023-11-21 19:45:29,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:45:29,101 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 229 transitions. [2023-11-21 19:45:29,101 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) [2023-11-21 19:45:29,101 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 229 transitions. [2023-11-21 19:45:29,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-21 19:45:29,104 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:45:29,104 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] [2023-11-21 19:45:29,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 19:45:29,105 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:45:29,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:45:29,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1857212849, now seen corresponding path program 1 times [2023-11-21 19:45:29,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:45:29,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834945205] [2023-11-21 19:45:29,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:45:29,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:45:29,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:45:29,515 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:45:29,516 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:45:29,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834945205] [2023-11-21 19:45:29,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834945205] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:45:29,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:45:29,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-21 19:45:29,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041683915] [2023-11-21 19:45:29,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:45:29,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 19:45:29,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:45:29,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 19:45:29,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-21 19:45:29,519 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) [2023-11-21 19:45:30,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:45:30,050 INFO L93 Difference]: Finished difference Result 461 states and 564 transitions. [2023-11-21 19:45:30,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-21 19:45:30,050 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 [2023-11-21 19:45:30,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:45:30,060 INFO L225 Difference]: With dead ends: 461 [2023-11-21 19:45:30,060 INFO L226 Difference]: Without dead ends: 327 [2023-11-21 19:45:30,066 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 [2023-11-21 19:45:30,071 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 121 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2023-11-21 19:45:30,071 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] [2023-11-21 19:45:30,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2023-11-21 19:45:30,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 319. [2023-11-21 19:45:30,186 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) [2023-11-21 19:45:30,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 390 transitions. [2023-11-21 19:45:30,190 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 390 transitions. Word has length 42 [2023-11-21 19:45:30,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:45:30,192 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 390 transitions. [2023-11-21 19:45:30,192 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) [2023-11-21 19:45:30,192 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 390 transitions. [2023-11-21 19:45:30,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-21 19:45:30,201 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:45:30,202 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] [2023-11-21 19:45:30,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 19:45:30,202 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:45:30,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:45:30,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1393769389, now seen corresponding path program 1 times [2023-11-21 19:45:30,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:45:30,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647446590] [2023-11-21 19:45:30,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:45:30,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:45:30,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:45:30,828 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:45:30,828 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:45:30,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647446590] [2023-11-21 19:45:30,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647446590] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:45:30,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341084718] [2023-11-21 19:45:30,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:45:30,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:45:30,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484a40b3-9009-4f78-8147-06e161d09040/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:45:30,833 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484a40b3-9009-4f78-8147-06e161d09040/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:45:30,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484a40b3-9009-4f78-8147-06e161d09040/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 19:45:30,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:45:30,966 INFO L262 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-21 19:45:30,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:45:31,391 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:45:31,391 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:45:31,816 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-21 19:45:31,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341084718] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 19:45:31,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [649278146] [2023-11-21 19:45:31,836 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2023-11-21 19:45:31,837 INFO L166 IcfgInterpreter]: Building call graph [2023-11-21 19:45:31,840 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-21 19:45:31,845 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-21 19:45:31,846 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-21 19:45:35,352 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 137 for LOIs [2023-11-21 19:45:35,493 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 26 for LOIs [2023-11-21 19:45:35,717 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 27 for LOIs [2023-11-21 19:45:35,788 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 16 for LOIs [2023-11-21 19:45:35,794 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-21 19:45:38,576 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3118#(and (<= ~pumpRunning~0 1) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification4_spec__1_~tmp___0~2#1|) (not (= |timeShift___utac_acc__Specification4_spec__1_~tmp___0~2#1| 0)) (= |old(~pumpRunning~0)| 0) (= |timeShift_isPumpRunning_#res#1| ~pumpRunning~0) (= |timeShift_getWaterLevel_#res#1| 0) (= |timeShift___utac_acc__Specification4_spec__1_~tmp~8#1| 0) (<= 0 ~methaneLevelCritical~0) (<= 0 ~pumpRunning~0) (= ~waterLevel~0 0))' at error location [2023-11-21 19:45:38,576 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-21 19:45:38,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 19:45:38,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 10] total 26 [2023-11-21 19:45:38,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004064309] [2023-11-21 19:45:38,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 19:45:38,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-21 19:45:38,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:45:38,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-21 19:45:38,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=2360, Unknown=0, NotChecked=0, Total=2652 [2023-11-21 19:45:38,580 INFO L87 Difference]: Start difference. First operand 319 states and 390 transitions. Second operand has 26 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 23 states have internal predecessors, (81), 10 states have call successors, (14), 8 states have call predecessors, (14), 9 states have return successors, (12), 7 states have call predecessors, (12), 10 states have call successors, (12) [2023-11-21 19:45:40,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:45:40,281 INFO L93 Difference]: Finished difference Result 724 states and 924 transitions. [2023-11-21 19:45:40,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-21 19:45:40,281 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 23 states have internal predecessors, (81), 10 states have call successors, (14), 8 states have call predecessors, (14), 9 states have return successors, (12), 7 states have call predecessors, (12), 10 states have call successors, (12) Word has length 45 [2023-11-21 19:45:40,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:45:40,289 INFO L225 Difference]: With dead ends: 724 [2023-11-21 19:45:40,289 INFO L226 Difference]: Without dead ends: 529 [2023-11-21 19:45:40,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 100 SyntacticMatches, 6 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2451 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=868, Invalid=5938, Unknown=0, NotChecked=0, Total=6806 [2023-11-21 19:45:40,298 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 640 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 1376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-21 19:45:40,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [645 Valid, 545 Invalid, 1376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 1011 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-21 19:45:40,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2023-11-21 19:45:40,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 332. [2023-11-21 19:45:40,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 235 states have (on average 1.1617021276595745) internal successors, (273), 253 states have internal predecessors, (273), 43 states have call successors, (43), 43 states have call predecessors, (43), 53 states have return successors, (53), 49 states have call predecessors, (53), 43 states have call successors, (53) [2023-11-21 19:45:40,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 369 transitions. [2023-11-21 19:45:40,350 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 369 transitions. Word has length 45 [2023-11-21 19:45:40,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:45:40,351 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 369 transitions. [2023-11-21 19:45:40,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 23 states have internal predecessors, (81), 10 states have call successors, (14), 8 states have call predecessors, (14), 9 states have return successors, (12), 7 states have call predecessors, (12), 10 states have call successors, (12) [2023-11-21 19:45:40,352 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 369 transitions. [2023-11-21 19:45:40,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-21 19:45:40,354 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:45:40,354 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:45:40,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484a40b3-9009-4f78-8147-06e161d09040/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 19:45:40,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484a40b3-9009-4f78-8147-06e161d09040/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-21 19:45:40,571 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:45:40,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:45:40,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1863635914, now seen corresponding path program 1 times [2023-11-21 19:45:40,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:45:40,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936459521] [2023-11-21 19:45:40,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:45:40,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:45:40,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:45:40,702 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-21 19:45:40,702 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:45:40,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936459521] [2023-11-21 19:45:40,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936459521] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:45:40,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:45:40,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 19:45:40,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415494927] [2023-11-21 19:45:40,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:45:40,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:45:40,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:45:40,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:45:40,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:45:40,705 INFO L87 Difference]: Start difference. First operand 332 states and 369 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-21 19:45:40,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:45:40,799 INFO L93 Difference]: Finished difference Result 339 states and 375 transitions. [2023-11-21 19:45:40,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 19:45:40,799 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 69 [2023-11-21 19:45:40,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:45:40,804 INFO L225 Difference]: With dead ends: 339 [2023-11-21 19:45:40,805 INFO L226 Difference]: Without dead ends: 337 [2023-11-21 19:45:40,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:45:40,807 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 35 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:45:40,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 98 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:45:40,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2023-11-21 19:45:40,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 332. [2023-11-21 19:45:40,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 235 states have (on average 1.1531914893617021) internal successors, (271), 253 states have internal predecessors, (271), 43 states have call successors, (43), 43 states have call predecessors, (43), 53 states have return successors, (53), 49 states have call predecessors, (53), 43 states have call successors, (53) [2023-11-21 19:45:40,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 367 transitions. [2023-11-21 19:45:40,848 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 367 transitions. Word has length 69 [2023-11-21 19:45:40,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:45:40,850 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 367 transitions. [2023-11-21 19:45:40,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-11-21 19:45:40,851 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 367 transitions. [2023-11-21 19:45:40,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-21 19:45:40,853 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:45:40,853 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] [2023-11-21 19:45:40,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-21 19:45:40,854 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:45:40,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:45:40,854 INFO L85 PathProgramCache]: Analyzing trace with hash 1015271726, now seen corresponding path program 1 times [2023-11-21 19:45:40,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:45:40,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773406103] [2023-11-21 19:45:40,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:45:40,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:45:40,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 19:45:40,887 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 19:45:40,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 19:45:40,962 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-21 19:45:40,962 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 19:45:40,963 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-21 19:45:40,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-21 19:45:40,968 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:45:40,972 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 19:45:41,024 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-11-21 19:45:41,028 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-11-21 19:45:41,034 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-11-21 19:45:41,035 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-11-21 19:45:41,036 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-11-21 19:45:41,036 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-11-21 19:45:41,038 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-11-21 19:45:41,045 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-11-21 19:45:41,046 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-11-21 19:45:41,046 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-11-21 19:45:41,046 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-11-21 19:45:41,077 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 07:45:41 BoogieIcfgContainer [2023-11-21 19:45:41,077 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 19:45:41,078 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 19:45:41,078 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 19:45:41,078 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 19:45:41,079 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:45:26" (3/4) ... [2023-11-21 19:45:41,080 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-21 19:45:41,105 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-11-21 19:45:41,117 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-11-21 19:45:41,118 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-11-21 19:45:41,118 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-11-21 19:45:41,119 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-11-21 19:45:41,119 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-11-21 19:45:41,120 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-11-21 19:45:41,121 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-11-21 19:45:41,121 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-11-21 19:45:41,121 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-11-21 19:45:41,121 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet8 could not be translated [2023-11-21 19:45:41,220 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484a40b3-9009-4f78-8147-06e161d09040/bin/utaipan-verify-QoSU8krkJ5/witness.graphml [2023-11-21 19:45:41,221 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 19:45:41,222 INFO L158 Benchmark]: Toolchain (without parser) took 15867.61ms. Allocated memory was 146.8MB in the beginning and 539.0MB in the end (delta: 392.2MB). Free memory was 111.1MB in the beginning and 461.3MB in the end (delta: -350.2MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2023-11-21 19:45:41,223 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 146.8MB. Free memory is still 115.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 19:45:41,223 INFO L158 Benchmark]: CACSL2BoogieTranslator took 598.58ms. Allocated memory is still 146.8MB. Free memory was 110.6MB in the beginning and 102.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-21 19:45:41,224 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.65ms. Allocated memory is still 146.8MB. Free memory was 102.1MB in the beginning and 99.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 19:45:41,225 INFO L158 Benchmark]: Boogie Preprocessor took 50.45ms. Allocated memory is still 146.8MB. Free memory was 99.9MB in the beginning and 98.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 19:45:41,225 INFO L158 Benchmark]: RCFGBuilder took 848.41ms. Allocated memory is still 146.8MB. Free memory was 98.3MB in the beginning and 71.9MB in the end (delta: 26.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-21 19:45:41,225 INFO L158 Benchmark]: TraceAbstraction took 14155.98ms. Allocated memory was 146.8MB in the beginning and 539.0MB in the end (delta: 392.2MB). Free memory was 71.5MB in the beginning and 468.7MB in the end (delta: -397.2MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 19:45:41,226 INFO L158 Benchmark]: Witness Printer took 143.75ms. Allocated memory is still 539.0MB. Free memory was 468.7MB in the beginning and 461.3MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-21 19:45:41,230 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 146.8MB. Free memory is still 115.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 598.58ms. Allocated memory is still 146.8MB. Free memory was 110.6MB in the beginning and 102.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.65ms. Allocated memory is still 146.8MB. Free memory was 102.1MB in the beginning and 99.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.45ms. Allocated memory is still 146.8MB. Free memory was 99.9MB in the beginning and 98.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 848.41ms. Allocated memory is still 146.8MB. Free memory was 98.3MB in the beginning and 71.9MB in the end (delta: 26.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 14155.98ms. Allocated memory was 146.8MB in the beginning and 539.0MB in the end (delta: 392.2MB). Free memory was 71.5MB in the beginning and 468.7MB in the end (delta: -397.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 143.75ms. Allocated memory is still 539.0MB. Free memory was 468.7MB in the beginning and 461.3MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 49]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"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 FALSE !(\read(tmp___2)) [L136] tmp___1 = __VERIFIER_nondet_int() [L138] COND TRUE \read(tmp___1) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=1, tmp___2=0, 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=0, 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=0, 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=0, 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=0, 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: 14.0s, OverallIterations: 10, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 975 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 959 mSDsluCounter, 1225 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 867 mSDsCounter, 454 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1565 IncrementalHoareTripleChecker+Invalid, 2019 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 454 mSolverCounterUnsat, 358 mSDtfsCounter, 1565 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 235 GetRequests, 118 SyntacticMatches, 6 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2482 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=332occurred in iteration=8, InterpolantAutomatonStates: 78, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 238 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 395 NumberOfCodeBlocks, 395 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 355 ConstructedInterpolants, 0 QuantifiedInterpolants, 1151 SizeOfPredicates, 7 NumberOfNonLiveVariables, 220 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 11 InterpolantComputations, 8 PerfectInterpolantSequences, 80/111 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-11-21 19:45:41,286 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_484a40b3-9009-4f78-8147-06e161d09040/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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