./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product40.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product40.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1b223e2286b1d2d2d4710f5bd529ee4610cfb9619424734c12c9aa00d3c99444 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 17:54:14,692 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 17:54:14,775 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 17:54:14,779 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 17:54:14,780 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 17:54:14,800 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 17:54:14,801 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 17:54:14,801 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 17:54:14,802 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 17:54:14,802 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 17:54:14,803 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 17:54:14,803 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 17:54:14,804 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 17:54:14,804 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 17:54:14,805 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 17:54:14,805 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 17:54:14,806 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 17:54:14,806 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 17:54:14,807 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 17:54:14,807 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 17:54:14,808 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 17:54:14,808 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 17:54:14,809 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 17:54:14,809 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 17:54:14,810 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 17:54:14,810 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 17:54:14,811 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 17:54:14,811 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 17:54:14,812 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 17:54:14,812 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 17:54:14,812 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 17:54:14,813 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 17:54:14,813 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 17:54:14,813 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 17:54:14,813 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 17:54:14,814 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 17:54:14,814 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 17:54:14,814 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:54:14,814 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 17:54:14,814 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 17:54:14,815 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 17:54:14,815 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 17:54:14,815 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 17:54:14,815 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 17:54:14,815 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 17:54:14,816 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 17:54:14,816 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 17:54:14,816 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_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b223e2286b1d2d2d4710f5bd529ee4610cfb9619424734c12c9aa00d3c99444 [2023-12-02 17:54:15,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 17:54:15,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 17:54:15,071 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 17:54:15,072 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 17:54:15,076 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 17:54:15,077 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/product-lines/minepump_spec2_product40.cil.c [2023-12-02 17:54:17,827 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 17:54:18,051 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 17:54:18,051 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/sv-benchmarks/c/product-lines/minepump_spec2_product40.cil.c [2023-12-02 17:54:18,067 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh/data/3c44ffbb1/249694d57b424bde8c49790adac48201/FLAGba6a5afd6 [2023-12-02 17:54:18,082 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh/data/3c44ffbb1/249694d57b424bde8c49790adac48201 [2023-12-02 17:54:18,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 17:54:18,085 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 17:54:18,087 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 17:54:18,087 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 17:54:18,091 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 17:54:18,092 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:54:18" (1/1) ... [2023-12-02 17:54:18,093 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d427631 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:54:18, skipping insertion in model container [2023-12-02 17:54:18,093 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 05:54:18" (1/1) ... [2023-12-02 17:54:18,140 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 17:54:18,373 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_480b1de9-2927-4609-a8e4-409b6f0107b5/sv-benchmarks/c/product-lines/minepump_spec2_product40.cil.c[17002,17015] [2023-12-02 17:54:18,390 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:54:18,402 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 17:54:18,410 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [49] [2023-12-02 17:54:18,411 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [91] [2023-12-02 17:54:18,412 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [191] [2023-12-02 17:54:18,412 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [264] [2023-12-02 17:54:18,412 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [468] [2023-12-02 17:54:18,412 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [834] [2023-12-02 17:54:18,412 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [843] [2023-12-02 17:54:18,413 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [943] [2023-12-02 17:54:18,468 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_480b1de9-2927-4609-a8e4-409b6f0107b5/sv-benchmarks/c/product-lines/minepump_spec2_product40.cil.c[17002,17015] [2023-12-02 17:54:18,473 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 17:54:18,491 INFO L206 MainTranslator]: Completed translation [2023-12-02 17:54:18,491 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:54:18 WrapperNode [2023-12-02 17:54:18,492 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 17:54:18,493 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 17:54:18,493 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 17:54:18,493 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 17:54:18,499 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:54:18" (1/1) ... [2023-12-02 17:54:18,512 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:54:18" (1/1) ... [2023-12-02 17:54:18,538 INFO L138 Inliner]: procedures = 56, calls = 101, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 200 [2023-12-02 17:54:18,539 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 17:54:18,539 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 17:54:18,539 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 17:54:18,539 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 17:54:18,547 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:54:18" (1/1) ... [2023-12-02 17:54:18,547 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:54:18" (1/1) ... [2023-12-02 17:54:18,549 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:54:18" (1/1) ... [2023-12-02 17:54:18,550 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:54:18" (1/1) ... [2023-12-02 17:54:18,555 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:54:18" (1/1) ... [2023-12-02 17:54:18,560 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:54:18" (1/1) ... [2023-12-02 17:54:18,562 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:54:18" (1/1) ... [2023-12-02 17:54:18,564 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:54:18" (1/1) ... [2023-12-02 17:54:18,567 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 17:54:18,568 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 17:54:18,568 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 17:54:18,569 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 17:54:18,569 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:54:18" (1/1) ... [2023-12-02 17:54:18,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 17:54:18,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:54:18,599 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 17:54:18,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 17:54:18,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 17:54:18,632 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-12-02 17:54:18,632 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-12-02 17:54:18,632 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-12-02 17:54:18,632 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-12-02 17:54:18,632 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-12-02 17:54:18,633 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-12-02 17:54:18,633 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-12-02 17:54:18,633 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-12-02 17:54:18,633 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2023-12-02 17:54:18,633 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2023-12-02 17:54:18,633 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-12-02 17:54:18,634 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-12-02 17:54:18,634 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-12-02 17:54:18,634 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-12-02 17:54:18,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 17:54:18,634 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-12-02 17:54:18,634 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-12-02 17:54:18,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 17:54:18,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 17:54:18,709 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 17:54:18,712 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 17:54:18,961 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 17:54:19,045 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 17:54:19,046 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 17:54:19,047 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:54:19 BoogieIcfgContainer [2023-12-02 17:54:19,047 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 17:54:19,050 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 17:54:19,050 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 17:54:19,053 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 17:54:19,053 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 05:54:18" (1/3) ... [2023-12-02 17:54:19,054 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52ec7789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:54:19, skipping insertion in model container [2023-12-02 17:54:19,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 05:54:18" (2/3) ... [2023-12-02 17:54:19,054 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52ec7789 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 05:54:19, skipping insertion in model container [2023-12-02 17:54:19,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:54:19" (3/3) ... [2023-12-02 17:54:19,056 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product40.cil.c [2023-12-02 17:54:19,072 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 17:54:19,072 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 17:54:19,111 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 17:54:19,116 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;@62561fbc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 17:54:19,116 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 17:54:19,120 INFO L276 IsEmpty]: Start isEmpty. Operand has 66 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 51 states have internal predecessors, (61), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2023-12-02 17:54:19,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 17:54:19,129 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:54:19,129 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:54:19,130 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:54:19,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:54:19,135 INFO L85 PathProgramCache]: Analyzing trace with hash -2037591432, now seen corresponding path program 1 times [2023-12-02 17:54:19,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:54:19,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478652776] [2023-12-02 17:54:19,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:54:19,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:54:19,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:54:19,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:54:19,329 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:54:19,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478652776] [2023-12-02 17:54:19,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478652776] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:54:19,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:54:19,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 17:54:19,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514411475] [2023-12-02 17:54:19,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:54:19,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 17:54:19,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:54:19,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 17:54:19,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 17:54:19,371 INFO L87 Difference]: Start difference. First operand has 66 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 51 states have internal predecessors, (61), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:54:19,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:54:19,434 INFO L93 Difference]: Finished difference Result 130 states and 179 transitions. [2023-12-02 17:54:19,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 17:54:19,436 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-12-02 17:54:19,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:54:19,445 INFO L225 Difference]: With dead ends: 130 [2023-12-02 17:54:19,446 INFO L226 Difference]: Without dead ends: 61 [2023-12-02 17:54:19,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 17:54:19,453 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:54:19,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:54:19,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-12-02 17:54:19,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2023-12-02 17:54:19,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 39 states have (on average 1.358974358974359) internal successors, (53), 47 states have internal predecessors, (53), 14 states have call successors, (14), 8 states have call predecessors, (14), 7 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 17:54:19,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 80 transitions. [2023-12-02 17:54:19,501 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 80 transitions. Word has length 17 [2023-12-02 17:54:19,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:54:19,501 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 80 transitions. [2023-12-02 17:54:19,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:54:19,502 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 80 transitions. [2023-12-02 17:54:19,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 17:54:19,504 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:54:19,505 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:54:19,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 17:54:19,505 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:54:19,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:54:19,506 INFO L85 PathProgramCache]: Analyzing trace with hash 417514010, now seen corresponding path program 1 times [2023-12-02 17:54:19,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:54:19,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169579634] [2023-12-02 17:54:19,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:54:19,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:54:19,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:54:19,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:54:19,601 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:54:19,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169579634] [2023-12-02 17:54:19,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169579634] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:54:19,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:54:19,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:54:19,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730909776] [2023-12-02 17:54:19,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:54:19,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:54:19,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:54:19,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:54:19,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:54:19,605 INFO L87 Difference]: Start difference. First operand 61 states and 80 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:54:19,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:54:19,649 INFO L93 Difference]: Finished difference Result 94 states and 122 transitions. [2023-12-02 17:54:19,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:54:19,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2023-12-02 17:54:19,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:54:19,651 INFO L225 Difference]: With dead ends: 94 [2023-12-02 17:54:19,651 INFO L226 Difference]: Without dead ends: 53 [2023-12-02 17:54:19,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:54:19,654 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 14 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:54:19,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 92 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:54:19,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-12-02 17:54:19,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2023-12-02 17:54:19,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 42 states have internal predecessors, (47), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 8 states have call predecessors, (11), 11 states have call successors, (11) [2023-12-02 17:54:19,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 69 transitions. [2023-12-02 17:54:19,665 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 69 transitions. Word has length 18 [2023-12-02 17:54:19,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:54:19,666 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 69 transitions. [2023-12-02 17:54:19,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:54:19,666 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 69 transitions. [2023-12-02 17:54:19,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 17:54:19,668 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:54:19,668 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] [2023-12-02 17:54:19,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 17:54:19,668 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:54:19,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:54:19,669 INFO L85 PathProgramCache]: Analyzing trace with hash 295217175, now seen corresponding path program 1 times [2023-12-02 17:54:19,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:54:19,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846722920] [2023-12-02 17:54:19,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:54:19,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:54:19,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:54:19,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:54:19,777 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:54:19,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846722920] [2023-12-02 17:54:19,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846722920] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:54:19,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:54:19,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:54:19,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203216181] [2023-12-02 17:54:19,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:54:19,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:54:19,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:54:19,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:54:19,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:54:19,780 INFO L87 Difference]: Start difference. First operand 53 states and 69 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:54:19,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:54:19,879 INFO L93 Difference]: Finished difference Result 138 states and 180 transitions. [2023-12-02 17:54:19,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:54:19,880 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2023-12-02 17:54:19,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:54:19,881 INFO L225 Difference]: With dead ends: 138 [2023-12-02 17:54:19,882 INFO L226 Difference]: Without dead ends: 87 [2023-12-02 17:54:19,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 17:54:19,884 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 92 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:54:19,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 137 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:54:19,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-12-02 17:54:19,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 84. [2023-12-02 17:54:19,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 55 states have (on average 1.3818181818181818) internal successors, (76), 66 states have internal predecessors, (76), 16 states have call successors, (16), 12 states have call predecessors, (16), 12 states have return successors, (17), 12 states have call predecessors, (17), 16 states have call successors, (17) [2023-12-02 17:54:19,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 109 transitions. [2023-12-02 17:54:19,903 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 109 transitions. Word has length 21 [2023-12-02 17:54:19,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:54:19,904 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 109 transitions. [2023-12-02 17:54:19,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:54:19,904 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 109 transitions. [2023-12-02 17:54:19,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-02 17:54:19,906 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:54:19,906 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:54:19,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 17:54:19,906 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:54:19,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:54:19,907 INFO L85 PathProgramCache]: Analyzing trace with hash 485959301, now seen corresponding path program 1 times [2023-12-02 17:54:19,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:54:19,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118592310] [2023-12-02 17:54:19,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:54:19,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:54:19,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:54:20,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:54:20,022 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:54:20,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118592310] [2023-12-02 17:54:20,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118592310] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:54:20,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:54:20,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 17:54:20,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860901571] [2023-12-02 17:54:20,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:54:20,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:54:20,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:54:20,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:54:20,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:54:20,025 INFO L87 Difference]: Start difference. First operand 84 states and 109 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:54:20,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:54:20,098 INFO L93 Difference]: Finished difference Result 166 states and 222 transitions. [2023-12-02 17:54:20,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:54:20,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2023-12-02 17:54:20,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:54:20,102 INFO L225 Difference]: With dead ends: 166 [2023-12-02 17:54:20,102 INFO L226 Difference]: Without dead ends: 164 [2023-12-02 17:54:20,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 17:54:20,105 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 45 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:54:20,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 104 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:54:20,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-12-02 17:54:20,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2023-12-02 17:54:20,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 107 states have (on average 1.3738317757009346) internal successors, (147), 128 states have internal predecessors, (147), 32 states have call successors, (32), 24 states have call predecessors, (32), 24 states have return successors, (40), 24 states have call predecessors, (40), 32 states have call successors, (40) [2023-12-02 17:54:20,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 219 transitions. [2023-12-02 17:54:20,138 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 219 transitions. Word has length 24 [2023-12-02 17:54:20,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:54:20,138 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 219 transitions. [2023-12-02 17:54:20,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 17:54:20,139 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 219 transitions. [2023-12-02 17:54:20,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-12-02 17:54:20,143 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:54:20,143 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:54:20,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 17:54:20,143 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:54:20,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:54:20,144 INFO L85 PathProgramCache]: Analyzing trace with hash -323365221, now seen corresponding path program 1 times [2023-12-02 17:54:20,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:54:20,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691889893] [2023-12-02 17:54:20,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:54:20,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:54:20,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:54:20,338 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 17:54:20,339 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:54:20,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691889893] [2023-12-02 17:54:20,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691889893] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:54:20,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437440200] [2023-12-02 17:54:20,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:54:20,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:54:20,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:54:20,344 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:54:20,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 17:54:20,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:54:20,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 17:54:20,440 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:54:20,556 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:54:20,556 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:54:20,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437440200] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:54:20,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 17:54:20,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2023-12-02 17:54:20,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730982482] [2023-12-02 17:54:20,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:54:20,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:54:20,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:54:20,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:54:20,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-12-02 17:54:20,559 INFO L87 Difference]: Start difference. First operand 164 states and 219 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 17:54:20,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:54:20,831 INFO L93 Difference]: Finished difference Result 421 states and 579 transitions. [2023-12-02 17:54:20,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 17:54:20,832 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 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 45 [2023-12-02 17:54:20,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:54:20,835 INFO L225 Difference]: With dead ends: 421 [2023-12-02 17:54:20,835 INFO L226 Difference]: Without dead ends: 259 [2023-12-02 17:54:20,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:54:20,839 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 79 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:54:20,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 187 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 17:54:20,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2023-12-02 17:54:20,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 240. [2023-12-02 17:54:20,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 163 states have (on average 1.2760736196319018) internal successors, (208), 180 states have internal predecessors, (208), 39 states have call successors, (39), 33 states have call predecessors, (39), 37 states have return successors, (63), 39 states have call predecessors, (63), 39 states have call successors, (63) [2023-12-02 17:54:20,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 310 transitions. [2023-12-02 17:54:20,895 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 310 transitions. Word has length 45 [2023-12-02 17:54:20,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:54:20,896 INFO L495 AbstractCegarLoop]: Abstraction has 240 states and 310 transitions. [2023-12-02 17:54:20,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 17:54:20,896 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 310 transitions. [2023-12-02 17:54:20,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-12-02 17:54:20,899 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:54:20,899 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:54:20,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 17:54:21,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:54:21,104 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:54:21,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:54:21,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1847167676, now seen corresponding path program 1 times [2023-12-02 17:54:21,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:54:21,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006142916] [2023-12-02 17:54:21,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:54:21,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:54:21,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:54:21,172 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-02 17:54:21,173 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:54:21,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006142916] [2023-12-02 17:54:21,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006142916] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:54:21,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:54:21,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 17:54:21,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861996874] [2023-12-02 17:54:21,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:54:21,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:54:21,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:54:21,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:54:21,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:54:21,176 INFO L87 Difference]: Start difference. First operand 240 states and 310 transitions. Second operand has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-02 17:54:21,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:54:21,302 INFO L93 Difference]: Finished difference Result 480 states and 620 transitions. [2023-12-02 17:54:21,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 17:54:21,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 60 [2023-12-02 17:54:21,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:54:21,305 INFO L225 Difference]: With dead ends: 480 [2023-12-02 17:54:21,306 INFO L226 Difference]: Without dead ends: 242 [2023-12-02 17:54:21,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 17:54:21,308 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 85 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:54:21,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 120 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:54:21,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2023-12-02 17:54:21,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 235. [2023-12-02 17:54:21,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 159 states have (on average 1.270440251572327) internal successors, (202), 176 states have internal predecessors, (202), 38 states have call successors, (38), 32 states have call predecessors, (38), 37 states have return successors, (56), 38 states have call predecessors, (56), 38 states have call successors, (56) [2023-12-02 17:54:21,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 296 transitions. [2023-12-02 17:54:21,340 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 296 transitions. Word has length 60 [2023-12-02 17:54:21,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:54:21,341 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 296 transitions. [2023-12-02 17:54:21,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 14.666666666666666) internal successors, (44), 4 states have internal predecessors, (44), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-02 17:54:21,341 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 296 transitions. [2023-12-02 17:54:21,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-02 17:54:21,343 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:54:21,343 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:54:21,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-02 17:54:21,343 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:54:21,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:54:21,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1364334038, now seen corresponding path program 1 times [2023-12-02 17:54:21,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:54:21,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551544808] [2023-12-02 17:54:21,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:54:21,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:54:21,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:54:21,696 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 17:54:21,696 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:54:21,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551544808] [2023-12-02 17:54:21,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551544808] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:54:21,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894185877] [2023-12-02 17:54:21,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:54:21,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:54:21,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:54:21,700 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:54:21,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 17:54:21,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:54:21,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 17:54:21,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:54:21,873 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:54:21,873 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:54:21,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894185877] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:54:21,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 17:54:21,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2023-12-02 17:54:21,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584050345] [2023-12-02 17:54:21,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:54:21,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 17:54:21,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:54:21,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 17:54:21,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-12-02 17:54:21,876 INFO L87 Difference]: Start difference. First operand 235 states and 296 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-02 17:54:21,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:54:21,943 INFO L93 Difference]: Finished difference Result 470 states and 591 transitions. [2023-12-02 17:54:21,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 17:54:21,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 57 [2023-12-02 17:54:21,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:54:21,946 INFO L225 Difference]: With dead ends: 470 [2023-12-02 17:54:21,946 INFO L226 Difference]: Without dead ends: 237 [2023-12-02 17:54:21,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-12-02 17:54:21,948 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 31 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:54:21,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 120 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:54:21,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-12-02 17:54:21,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 235. [2023-12-02 17:54:21,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 159 states have (on average 1.2452830188679245) internal successors, (198), 176 states have internal predecessors, (198), 38 states have call successors, (38), 32 states have call predecessors, (38), 37 states have return successors, (50), 38 states have call predecessors, (50), 38 states have call successors, (50) [2023-12-02 17:54:21,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 286 transitions. [2023-12-02 17:54:21,977 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 286 transitions. Word has length 57 [2023-12-02 17:54:21,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:54:21,977 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 286 transitions. [2023-12-02 17:54:21,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-02 17:54:21,977 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 286 transitions. [2023-12-02 17:54:21,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-12-02 17:54:21,979 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:54:21,979 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:54:21,985 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 17:54:22,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:54:22,185 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:54:22,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:54:22,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1412774836, now seen corresponding path program 1 times [2023-12-02 17:54:22,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:54:22,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709538389] [2023-12-02 17:54:22,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:54:22,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:54:22,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:54:22,474 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 17:54:22,474 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:54:22,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709538389] [2023-12-02 17:54:22,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709538389] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:54:22,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 17:54:22,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-02 17:54:22,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536590024] [2023-12-02 17:54:22,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:54:22,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 17:54:22,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:54:22,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 17:54:22,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-12-02 17:54:22,477 INFO L87 Difference]: Start difference. First operand 235 states and 286 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 8 states have internal predecessors, (44), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-02 17:54:22,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:54:22,809 INFO L93 Difference]: Finished difference Result 595 states and 738 transitions. [2023-12-02 17:54:22,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 17:54:22,815 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 8 states have internal predecessors, (44), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) Word has length 59 [2023-12-02 17:54:22,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:54:22,818 INFO L225 Difference]: With dead ends: 595 [2023-12-02 17:54:22,818 INFO L226 Difference]: Without dead ends: 362 [2023-12-02 17:54:22,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2023-12-02 17:54:22,819 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 122 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:54:22,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 223 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 17:54:22,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2023-12-02 17:54:22,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 320. [2023-12-02 17:54:22,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 222 states have (on average 1.2567567567567568) internal successors, (279), 242 states have internal predecessors, (279), 49 states have call successors, (49), 43 states have call predecessors, (49), 48 states have return successors, (61), 50 states have call predecessors, (61), 49 states have call successors, (61) [2023-12-02 17:54:22,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 389 transitions. [2023-12-02 17:54:22,863 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 389 transitions. Word has length 59 [2023-12-02 17:54:22,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:54:22,863 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 389 transitions. [2023-12-02 17:54:22,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 8 states have internal predecessors, (44), 4 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2023-12-02 17:54:22,864 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 389 transitions. [2023-12-02 17:54:22,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-02 17:54:22,865 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:54:22,866 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:54:22,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-02 17:54:22,866 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:54:22,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:54:22,866 INFO L85 PathProgramCache]: Analyzing trace with hash -4653111, now seen corresponding path program 1 times [2023-12-02 17:54:22,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:54:22,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407846139] [2023-12-02 17:54:22,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:54:22,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:54:22,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:54:23,005 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 17:54:23,005 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:54:23,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407846139] [2023-12-02 17:54:23,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407846139] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:54:23,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323115020] [2023-12-02 17:54:23,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:54:23,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:54:23,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:54:23,007 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:54:23,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 17:54:23,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:54:23,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 17:54:23,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:54:23,142 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-12-02 17:54:23,142 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:54:23,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323115020] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:54:23,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 17:54:23,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-12-02 17:54:23,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9632174] [2023-12-02 17:54:23,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:54:23,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 17:54:23,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:54:23,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 17:54:23,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-12-02 17:54:23,144 INFO L87 Difference]: Start difference. First operand 320 states and 389 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 17:54:23,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:54:23,242 INFO L93 Difference]: Finished difference Result 540 states and 656 transitions. [2023-12-02 17:54:23,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 17:54:23,243 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 62 [2023-12-02 17:54:23,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:54:23,245 INFO L225 Difference]: With dead ends: 540 [2023-12-02 17:54:23,245 INFO L226 Difference]: Without dead ends: 281 [2023-12-02 17:54:23,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-12-02 17:54:23,247 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 43 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 17:54:23,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 148 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 17:54:23,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2023-12-02 17:54:23,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 272. [2023-12-02 17:54:23,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 188 states have (on average 1.2393617021276595) internal successors, (233), 206 states have internal predecessors, (233), 42 states have call successors, (42), 37 states have call predecessors, (42), 41 states have return successors, (49), 42 states have call predecessors, (49), 42 states have call successors, (49) [2023-12-02 17:54:23,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 324 transitions. [2023-12-02 17:54:23,284 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 324 transitions. Word has length 62 [2023-12-02 17:54:23,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:54:23,284 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 324 transitions. [2023-12-02 17:54:23,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-12-02 17:54:23,284 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 324 transitions. [2023-12-02 17:54:23,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-02 17:54:23,286 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:54:23,286 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:54:23,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 17:54:23,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:54:23,487 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:54:23,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:54:23,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1250526291, now seen corresponding path program 1 times [2023-12-02 17:54:23,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:54:23,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077726894] [2023-12-02 17:54:23,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:54:23,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:54:23,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:54:23,626 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 17:54:23,626 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:54:23,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077726894] [2023-12-02 17:54:23,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077726894] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:54:23,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028204443] [2023-12-02 17:54:23,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:54:23,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:54:23,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:54:23,628 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:54:23,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 17:54:23,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:54:23,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 17:54:23,720 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:54:23,840 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-12-02 17:54:23,840 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 17:54:23,951 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-12-02 17:54:23,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028204443] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 17:54:23,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-02 17:54:23,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 5] total 11 [2023-12-02 17:54:23,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538564047] [2023-12-02 17:54:23,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:54:23,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 17:54:23,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:54:23,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 17:54:23,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-02 17:54:23,953 INFO L87 Difference]: Start difference. First operand 272 states and 324 transitions. Second operand has 6 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 17:54:24,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:54:24,120 INFO L93 Difference]: Finished difference Result 744 states and 892 transitions. [2023-12-02 17:54:24,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 17:54:24,122 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 67 [2023-12-02 17:54:24,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:54:24,125 INFO L225 Difference]: With dead ends: 744 [2023-12-02 17:54:24,125 INFO L226 Difference]: Without dead ends: 474 [2023-12-02 17:54:24,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-12-02 17:54:24,127 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 39 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:54:24,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 234 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:54:24,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2023-12-02 17:54:24,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 450. [2023-12-02 17:54:24,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 316 states have (on average 1.2246835443037976) internal successors, (387), 340 states have internal predecessors, (387), 67 states have call successors, (67), 59 states have call predecessors, (67), 66 states have return successors, (77), 68 states have call predecessors, (77), 67 states have call successors, (77) [2023-12-02 17:54:24,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 531 transitions. [2023-12-02 17:54:24,176 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 531 transitions. Word has length 67 [2023-12-02 17:54:24,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:54:24,176 INFO L495 AbstractCegarLoop]: Abstraction has 450 states and 531 transitions. [2023-12-02 17:54:24,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-02 17:54:24,177 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 531 transitions. [2023-12-02 17:54:24,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-02 17:54:24,179 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:54:24,179 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:54:24,185 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 17:54:24,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:54:24,385 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:54:24,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:54:24,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1904000626, now seen corresponding path program 1 times [2023-12-02 17:54:24,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:54:24,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243486527] [2023-12-02 17:54:24,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:54:24,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:54:24,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:54:24,547 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 17:54:24,547 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:54:24,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243486527] [2023-12-02 17:54:24,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243486527] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:54:24,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50875925] [2023-12-02 17:54:24,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:54:24,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:54:24,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:54:24,548 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:54:24,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 17:54:24,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:54:24,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-02 17:54:24,643 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:54:24,712 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 17:54:24,712 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:54:24,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50875925] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:54:24,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 17:54:24,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 13 [2023-12-02 17:54:24,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473613979] [2023-12-02 17:54:24,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:54:24,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 17:54:24,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:54:24,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 17:54:24,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-12-02 17:54:24,714 INFO L87 Difference]: Start difference. First operand 450 states and 531 transitions. Second operand has 9 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 3 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 17:54:24,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:54:24,982 INFO L93 Difference]: Finished difference Result 917 states and 1115 transitions. [2023-12-02 17:54:24,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 17:54:24,983 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 3 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) Word has length 70 [2023-12-02 17:54:24,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:54:24,987 INFO L225 Difference]: With dead ends: 917 [2023-12-02 17:54:24,987 INFO L226 Difference]: Without dead ends: 647 [2023-12-02 17:54:24,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2023-12-02 17:54:24,989 INFO L413 NwaCegarLoop]: 94 mSDtfsCounter, 44 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 17:54:24,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 560 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 17:54:24,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2023-12-02 17:54:25,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 635. [2023-12-02 17:54:25,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 449 states have (on average 1.2204899777282852) internal successors, (548), 478 states have internal predecessors, (548), 94 states have call successors, (94), 83 states have call predecessors, (94), 91 states have return successors, (114), 92 states have call predecessors, (114), 94 states have call successors, (114) [2023-12-02 17:54:25,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 756 transitions. [2023-12-02 17:54:25,052 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 756 transitions. Word has length 70 [2023-12-02 17:54:25,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:54:25,053 INFO L495 AbstractCegarLoop]: Abstraction has 635 states and 756 transitions. [2023-12-02 17:54:25,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 3 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2023-12-02 17:54:25,053 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 756 transitions. [2023-12-02 17:54:25,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-02 17:54:25,056 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 17:54:25,056 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:54:25,061 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 17:54:25,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:54:25,257 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 17:54:25,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 17:54:25,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1230047411, now seen corresponding path program 1 times [2023-12-02 17:54:25,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 17:54:25,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424507208] [2023-12-02 17:54:25,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:54:25,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 17:54:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:54:25,445 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-12-02 17:54:25,445 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 17:54:25,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424507208] [2023-12-02 17:54:25,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424507208] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 17:54:25,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957780660] [2023-12-02 17:54:25,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 17:54:25,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:54:25,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 17:54:25,447 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 17:54:25,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 17:54:25,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 17:54:25,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 21 conjunts are in the unsatisfiable core [2023-12-02 17:54:25,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 17:54:25,603 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-02 17:54:25,603 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 17:54:25,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957780660] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 17:54:25,603 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 17:54:25,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 14 [2023-12-02 17:54:25,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344666262] [2023-12-02 17:54:25,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 17:54:25,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 17:54:25,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 17:54:25,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 17:54:25,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-12-02 17:54:25,605 INFO L87 Difference]: Start difference. First operand 635 states and 756 transitions. Second operand has 9 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 17:54:25,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 17:54:25,857 INFO L93 Difference]: Finished difference Result 1203 states and 1449 transitions. [2023-12-02 17:54:25,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 17:54:25,858 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 73 [2023-12-02 17:54:25,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 17:54:25,858 INFO L225 Difference]: With dead ends: 1203 [2023-12-02 17:54:25,858 INFO L226 Difference]: Without dead ends: 0 [2023-12-02 17:54:25,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2023-12-02 17:54:25,861 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 47 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 17:54:25,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 291 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 17:54:25,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-02 17:54:25,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-02 17:54:25,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 17:54:25,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-02 17:54:25,863 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 73 [2023-12-02 17:54:25,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 17:54:25,863 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-02 17:54:25,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2023-12-02 17:54:25,863 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-02 17:54:25,863 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-02 17:54:25,866 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 17:54:25,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 17:54:26,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 17:54:26,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-02 17:54:28,656 INFO L899 garLoopResultBuilder]: For program point deactivatePumpEXIT(lines 362 369) no Hoare annotation was computed. [2023-12-02 17:54:28,656 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 362 369) the Hoare annotation is: (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (< |old(~pumpRunning~0)| 1) (= 0 ~systemActive~0)) [2023-12-02 17:54:28,656 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 295 301) no Hoare annotation was computed. [2023-12-02 17:54:28,656 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 295 301) the Hoare annotation is: true [2023-12-02 17:54:28,656 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 124 135) the Hoare annotation is: (let ((.cse5 (= |old(~methaneLevelCritical~0)| 0))) (let ((.cse1 (not .cse5)) (.cse4 (not (= ~methAndRunningLastTime~0 0))) (.cse0 (< ~pumpRunning~0 1)) (.cse2 (= ~methaneLevelCritical~0 0)) (.cse3 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse1 (not (= ~pumpRunning~0 0)) .cse2 .cse4) (or .cse0 .cse5 (not .cse2) .cse3)))) [2023-12-02 17:54:28,656 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 124 135) no Hoare annotation was computed. [2023-12-02 17:54:28,657 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 845 874) no Hoare annotation was computed. [2023-12-02 17:54:28,657 INFO L899 garLoopResultBuilder]: For program point L859(lines 859 863) no Hoare annotation was computed. [2023-12-02 17:54:28,657 INFO L902 garLoopResultBuilder]: At program point L859-1(lines 859 863) the Hoare annotation is: true [2023-12-02 17:54:28,657 INFO L902 garLoopResultBuilder]: At program point L855-2(lines 855 869) the Hoare annotation is: true [2023-12-02 17:54:28,657 INFO L902 garLoopResultBuilder]: At program point L851(line 851) the Hoare annotation is: true [2023-12-02 17:54:28,657 INFO L899 garLoopResultBuilder]: For program point L851-1(line 851) no Hoare annotation was computed. [2023-12-02 17:54:28,657 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 845 874) the Hoare annotation is: true [2023-12-02 17:54:28,657 INFO L899 garLoopResultBuilder]: For program point L870(lines 845 874) no Hoare annotation was computed. [2023-12-02 17:54:28,657 INFO L899 garLoopResultBuilder]: For program point L866(line 866) no Hoare annotation was computed. [2023-12-02 17:54:28,658 INFO L899 garLoopResultBuilder]: For program point L275-1(lines 274 293) no Hoare annotation was computed. [2023-12-02 17:54:28,658 INFO L899 garLoopResultBuilder]: For program point L337(lines 337 345) no Hoare annotation was computed. [2023-12-02 17:54:28,658 INFO L899 garLoopResultBuilder]: For program point L333(lines 333 350) no Hoare annotation was computed. [2023-12-02 17:54:28,658 INFO L895 garLoopResultBuilder]: At program point L375(line 375) the Hoare annotation is: (let ((.cse1 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse2 (< |old(~pumpRunning~0)| 1)) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse3 (= 0 ~systemActive~0))) (and (or .cse0 .cse1) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse2 .cse3) (or .cse1 (= ~methAndRunningLastTime~0 0) .cse2 .cse3) (or .cse0 (not .cse3)))) [2023-12-02 17:54:28,658 INFO L899 garLoopResultBuilder]: For program point L375-1(line 375) no Hoare annotation was computed. [2023-12-02 17:54:28,658 INFO L899 garLoopResultBuilder]: For program point L74(lines 74 84) no Hoare annotation was computed. [2023-12-02 17:54:28,658 INFO L899 garLoopResultBuilder]: For program point L70(lines 70 87) no Hoare annotation was computed. [2023-12-02 17:54:28,658 INFO L899 garLoopResultBuilder]: For program point L70-1(lines 62 90) no Hoare annotation was computed. [2023-12-02 17:54:28,659 INFO L895 garLoopResultBuilder]: At program point L343(line 343) the Hoare annotation is: (let ((.cse3 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse0 (< |old(~pumpRunning~0)| 1)) (.cse2 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= 0 ~systemActive~0))) (and (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= ~methaneLevelCritical~0 0) (= |timeShift_processEnvironment_~tmp~3#1| 0)) .cse0 .cse1) (or .cse2 .cse3) (or .cse3 (= ~methAndRunningLastTime~0 0) .cse0 .cse1) (or .cse2 (not .cse1)))) [2023-12-02 17:54:28,659 INFO L895 garLoopResultBuilder]: At program point L339(line 339) the Hoare annotation is: (let ((.cse3 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse0 (< |old(~pumpRunning~0)| 1)) (.cse2 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= 0 ~systemActive~0))) (and (or (and (= |timeShift_processEnvironment_~tmp~3#1| ~methaneLevelCritical~0) (not (= |timeShift_processEnvironment_~tmp~3#1| 0))) .cse0 .cse1) (or .cse2 .cse3) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse0 .cse1) (or .cse3 (= ~methAndRunningLastTime~0 0) .cse0 .cse1) (or .cse2 (not .cse1)))) [2023-12-02 17:54:28,659 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 81) no Hoare annotation was computed. [2023-12-02 17:54:28,659 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 271 294) the Hoare annotation is: (let ((.cse3 (not (= |old(~pumpRunning~0)| 0))) (.cse4 (= ~pumpRunning~0 0)) (.cse0 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse5 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse6 (= ~methAndRunningLastTime~0 0)) (.cse1 (< |old(~pumpRunning~0)| 1)) (.cse2 (= 0 ~systemActive~0))) (and (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse0) .cse1 .cse2) (or .cse3 (and .cse4 .cse0) (not .cse2)) (or .cse3 .cse5 (and .cse4 .cse6 .cse0) .cse2) (or .cse5 .cse6 .cse1 .cse2))) [2023-12-02 17:54:28,659 INFO L899 garLoopResultBuilder]: For program point L839(line 839) no Hoare annotation was computed. [2023-12-02 17:54:28,659 INFO L895 garLoopResultBuilder]: At program point L348(line 348) the Hoare annotation is: (let ((.cse1 (not (= |old(~pumpRunning~0)| 0))) (.cse0 (= 0 ~systemActive~0))) (and (or (< |old(~pumpRunning~0)| 1) .cse0) (or .cse1 (not (= |old(~methAndRunningLastTime~0)| 0)) (and (= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) (or (= |old(~waterLevel~0)| ~waterLevel~0) (= ~waterLevel~0 1)))) (or .cse1 (not .cse0)))) [2023-12-02 17:54:28,660 INFO L899 garLoopResultBuilder]: For program point L348-1(lines 329 353) no Hoare annotation was computed. [2023-12-02 17:54:28,660 INFO L899 garLoopResultBuilder]: For program point L282-1(lines 282 288) no Hoare annotation was computed. [2023-12-02 17:54:28,660 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 271 294) no Hoare annotation was computed. [2023-12-02 17:54:28,660 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 839) no Hoare annotation was computed. [2023-12-02 17:54:28,660 INFO L895 garLoopResultBuilder]: At program point L68(line 68) the Hoare annotation is: (let ((.cse3 (= |old(~waterLevel~0)| ~waterLevel~0))) (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse4 (= ~pumpRunning~0 0)) (.cse5 (or .cse3 (= ~waterLevel~0 1))) (.cse7 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse8 (= ~methaneLevelCritical~0 0)) (.cse1 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse2 (= ~methAndRunningLastTime~0 0)) (.cse9 (< |old(~pumpRunning~0)| 1)) (.cse6 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 (and (<= 1 ~pumpRunning~0) .cse2 .cse3) (and .cse4 .cse2 .cse5) .cse6) (or .cse4 (and .cse7 .cse8) .cse9 .cse6) (or .cse0 .cse4 .cse1 (not (= |old(~waterLevel~0)| 1))) (or .cse0 (not .cse6) (and .cse4 .cse5)) (or .cse7 .cse1 (not .cse8) .cse9 .cse6) (or .cse1 .cse2 .cse9 .cse6)))) [2023-12-02 17:54:28,660 INFO L899 garLoopResultBuilder]: For program point L68-1(line 68) no Hoare annotation was computed. [2023-12-02 17:54:28,660 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 136 144) the Hoare annotation is: true [2023-12-02 17:54:28,661 INFO L899 garLoopResultBuilder]: For program point isMethaneLevelCriticalEXIT(lines 136 144) no Hoare annotation was computed. [2023-12-02 17:54:28,661 INFO L899 garLoopResultBuilder]: For program point L259(lines 196 263) no Hoare annotation was computed. [2023-12-02 17:54:28,661 INFO L899 garLoopResultBuilder]: For program point L226(lines 226 232) no Hoare annotation was computed. [2023-12-02 17:54:28,661 INFO L899 garLoopResultBuilder]: For program point L226-1(lines 226 232) no Hoare annotation was computed. [2023-12-02 17:54:28,661 INFO L899 garLoopResultBuilder]: For program point L449(lines 449 455) no Hoare annotation was computed. [2023-12-02 17:54:28,661 INFO L899 garLoopResultBuilder]: For program point L449-1(lines 449 455) no Hoare annotation was computed. [2023-12-02 17:54:28,661 INFO L895 garLoopResultBuilder]: At program point L218(line 218) the Hoare annotation is: (let ((.cse0 (<= 1 ~pumpRunning~0)) (.cse3 (not (= 0 ~systemActive~0))) (.cse4 (= ~methAndRunningLastTime~0 0)) (.cse1 (= |ULTIMATE.start_main_~tmp~8#1| 1)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 (not (= ~methaneLevelCritical~0 0)) .cse1 .cse2 .cse3) (and .cse0 .cse4 .cse1 .cse2 .cse3) (and (= ~pumpRunning~0 0) .cse4 .cse1 .cse2))) [2023-12-02 17:54:28,661 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-02 17:54:28,661 INFO L895 garLoopResultBuilder]: At program point L256(lines 205 257) the Hoare annotation is: false [2023-12-02 17:54:28,662 INFO L899 garLoopResultBuilder]: For program point L244(lines 244 250) no Hoare annotation was computed. [2023-12-02 17:54:28,662 INFO L895 garLoopResultBuilder]: At program point L244-2(lines 236 251) the Hoare annotation is: (let ((.cse3 (= 0 ~systemActive~0)) (.cse0 (= ~pumpRunning~0 0)) (.cse1 (= |ULTIMATE.start_main_~tmp~8#1| 1)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3) (and (<= 1 ~pumpRunning~0) .cse1 .cse2 (not .cse3)) (and .cse0 (= ~methAndRunningLastTime~0 0) .cse1 .cse2))) [2023-12-02 17:54:28,662 INFO L899 garLoopResultBuilder]: For program point L207(lines 206 255) no Hoare annotation was computed. [2023-12-02 17:54:28,662 INFO L899 garLoopResultBuilder]: For program point L236(lines 236 251) no Hoare annotation was computed. [2023-12-02 17:54:28,662 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-02 17:54:28,662 INFO L895 garLoopResultBuilder]: At program point L228(line 228) the Hoare annotation is: (let ((.cse0 (<= 1 ~pumpRunning~0)) (.cse3 (not (= 0 ~systemActive~0))) (.cse4 (= ~methAndRunningLastTime~0 0)) (.cse1 (= |ULTIMATE.start_main_~tmp~8#1| 1)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 (not (= ~methaneLevelCritical~0 0)) .cse1 .cse2 .cse3) (and .cse0 .cse4 .cse1 .cse2 .cse3) (and (= ~pumpRunning~0 0) .cse4 .cse1 .cse2))) [2023-12-02 17:54:28,662 INFO L895 garLoopResultBuilder]: At program point L451(line 451) the Hoare annotation is: (and (<= 1 ~pumpRunning~0) (= |ULTIMATE.start_main_~tmp~8#1| 1) (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0) (not (= 0 ~systemActive~0))) [2023-12-02 17:54:28,662 INFO L899 garLoopResultBuilder]: For program point L930(lines 930 937) no Hoare annotation was computed. [2023-12-02 17:54:28,662 INFO L899 garLoopResultBuilder]: For program point L930-2(lines 930 937) no Hoare annotation was computed. [2023-12-02 17:54:28,663 INFO L895 garLoopResultBuilder]: At program point L253(lines 206 255) the Hoare annotation is: (let ((.cse0 (<= 1 ~pumpRunning~0)) (.cse1 (= ~methaneLevelCritical~0 0)) (.cse4 (not (= 0 ~systemActive~0))) (.cse5 (= ~methAndRunningLastTime~0 0)) (.cse2 (= |ULTIMATE.start_main_~tmp~8#1| 1)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 (not (= ~waterLevel~0 1)) (not .cse1) .cse2 .cse3 .cse4) (and .cse0 .cse5 .cse1 .cse2 .cse3 .cse4) (and (= ~pumpRunning~0 0) .cse5 .cse2 .cse3))) [2023-12-02 17:54:28,663 INFO L899 garLoopResultBuilder]: For program point L216(lines 216 222) no Hoare annotation was computed. [2023-12-02 17:54:28,663 INFO L899 garLoopResultBuilder]: For program point L216-1(lines 216 222) no Hoare annotation was computed. [2023-12-02 17:54:28,663 INFO L899 garLoopResultBuilder]: For program point L322-1(lines 303 327) no Hoare annotation was computed. [2023-12-02 17:54:28,663 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 303 327) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) .cse0 (not (= ~methAndRunningLastTime~0 0))) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (= ~methaneLevelCritical~0 0)) (< |old(~pumpRunning~0)| 1) .cse0))) [2023-12-02 17:54:28,663 INFO L895 garLoopResultBuilder]: At program point L317(line 317) the Hoare annotation is: (let ((.cse1 (not (= |old(~pumpRunning~0)| 0))) (.cse0 (= 0 ~systemActive~0)) (.cse2 (not (= ~methAndRunningLastTime~0 0)))) (and (or (not (= ~methaneLevelCritical~0 0)) (< |old(~pumpRunning~0)| 1) .cse0) (or (not (= ~waterLevel~0 1)) .cse1 (= |processEnvironment__wrappee__highWaterSensor_~tmp~2#1| 0) .cse0 .cse2) (or .cse1 (= ~pumpRunning~0 0) .cse0 .cse2))) [2023-12-02 17:54:28,663 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 303 327) no Hoare annotation was computed. [2023-12-02 17:54:28,663 INFO L899 garLoopResultBuilder]: For program point L311(lines 311 319) no Hoare annotation was computed. [2023-12-02 17:54:28,663 INFO L899 garLoopResultBuilder]: For program point L307(lines 307 324) no Hoare annotation was computed. [2023-12-02 17:54:28,664 INFO L895 garLoopResultBuilder]: At program point L322(line 322) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (= ~methaneLevelCritical~0 0)) (< |old(~pumpRunning~0)| 1) .cse0) (or (not (= |old(~pumpRunning~0)| 0)) .cse0 (not (= ~methAndRunningLastTime~0 0))))) [2023-12-02 17:54:28,664 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 112 123) no Hoare annotation was computed. [2023-12-02 17:54:28,664 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 112 123) the Hoare annotation is: (let ((.cse2 (< ~pumpRunning~0 1)) (.cse0 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse3 (= 0 ~systemActive~0)) (.cse1 (not (= ~methAndRunningLastTime~0 0)))) (and (or (not (= ~pumpRunning~0 0)) .cse0 .cse1) (or .cse2 (= ~methaneLevelCritical~0 0) .cse0 .cse3) (or .cse2 .cse0 .cse3 .cse1))) [2023-12-02 17:54:28,666 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 17:54:28,668 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 17:54:28,681 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 05:54:28 BoogieIcfgContainer [2023-12-02 17:54:28,681 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 17:54:28,682 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 17:54:28,682 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 17:54:28,682 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 17:54:28,683 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 05:54:19" (3/4) ... [2023-12-02 17:54:28,685 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-12-02 17:54:28,687 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2023-12-02 17:54:28,687 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2023-12-02 17:54:28,687 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2023-12-02 17:54:28,687 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2023-12-02 17:54:28,687 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2023-12-02 17:54:28,688 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2023-12-02 17:54:28,688 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2023-12-02 17:54:28,688 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2023-12-02 17:54:28,696 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 41 nodes and edges [2023-12-02 17:54:28,696 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-12-02 17:54:28,697 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-12-02 17:54:28,697 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 17:54:28,698 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-12-02 17:54:28,724 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((pumpRunning == \old(pumpRunning)) && (\old(waterLevel) == waterLevel)) || (\old(pumpRunning) < 1)) || (0 == systemActive)) && ((!((\old(pumpRunning) == 0)) || ((pumpRunning == 0) && (\old(waterLevel) == waterLevel))) || !((0 == systemActive)))) && (((!((\old(pumpRunning) == 0)) || !((\old(methAndRunningLastTime) == 0))) || (((pumpRunning == 0) && (methAndRunningLastTime == 0)) && (\old(waterLevel) == waterLevel))) || (0 == systemActive))) && (((!((\old(methAndRunningLastTime) == 0)) || (methAndRunningLastTime == 0)) || (\old(pumpRunning) < 1)) || (0 == systemActive))) [2023-12-02 17:54:28,759 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((pumpRunning == \old(pumpRunning)) && (\old(waterLevel) == waterLevel)) || (\old(pumpRunning) < 1)) || (0 == systemActive)) && ((!((\old(pumpRunning) == 0)) || ((pumpRunning == 0) && (\old(waterLevel) == waterLevel))) || !((0 == systemActive)))) && (((!((\old(pumpRunning) == 0)) || !((\old(methAndRunningLastTime) == 0))) || (((pumpRunning == 0) && (methAndRunningLastTime == 0)) && (\old(waterLevel) == waterLevel))) || (0 == systemActive))) && (((!((\old(methAndRunningLastTime) == 0)) || (methAndRunningLastTime == 0)) || (\old(pumpRunning) < 1)) || (0 == systemActive))) [2023-12-02 17:54:28,806 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh/witness.graphml [2023-12-02 17:54:28,807 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh/witness.yml [2023-12-02 17:54:28,807 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 17:54:28,808 INFO L158 Benchmark]: Toolchain (without parser) took 10722.69ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 112.1MB in the beginning and 84.0MB in the end (delta: 28.1MB). Peak memory consumption was 57.1MB. Max. memory is 16.1GB. [2023-12-02 17:54:28,808 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 109.1MB. Free memory is still 83.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 17:54:28,809 INFO L158 Benchmark]: CACSL2BoogieTranslator took 405.40ms. Allocated memory is still 146.8MB. Free memory was 112.1MB in the beginning and 92.3MB in the end (delta: 19.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 17:54:28,809 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.09ms. Allocated memory is still 146.8MB. Free memory was 92.3MB in the beginning and 90.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-12-02 17:54:28,809 INFO L158 Benchmark]: Boogie Preprocessor took 28.11ms. Allocated memory is still 146.8MB. Free memory was 90.2MB in the beginning and 89.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 17:54:28,810 INFO L158 Benchmark]: RCFGBuilder took 479.04ms. Allocated memory is still 146.8MB. Free memory was 88.7MB in the beginning and 100.1MB in the end (delta: -11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 17:54:28,810 INFO L158 Benchmark]: TraceAbstraction took 9631.86ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 99.1MB in the beginning and 91.4MB in the end (delta: 7.7MB). Peak memory consumption was 92.6MB. Max. memory is 16.1GB. [2023-12-02 17:54:28,811 INFO L158 Benchmark]: Witness Printer took 125.55ms. Allocated memory is still 176.2MB. Free memory was 91.4MB in the beginning and 84.0MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-12-02 17:54:28,812 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 109.1MB. Free memory is still 83.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 405.40ms. Allocated memory is still 146.8MB. Free memory was 112.1MB in the beginning and 92.3MB in the end (delta: 19.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.09ms. Allocated memory is still 146.8MB. Free memory was 92.3MB in the beginning and 90.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.11ms. Allocated memory is still 146.8MB. Free memory was 90.2MB in the beginning and 89.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 479.04ms. Allocated memory is still 146.8MB. Free memory was 88.7MB in the beginning and 100.1MB in the end (delta: -11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 9631.86ms. Allocated memory was 146.8MB in the beginning and 176.2MB in the end (delta: 29.4MB). Free memory was 99.1MB in the beginning and 91.4MB in the end (delta: 7.7MB). Peak memory consumption was 92.6MB. Max. memory is 16.1GB. * Witness Printer took 125.55ms. Allocated memory is still 176.2MB. Free memory was 91.4MB in the beginning and 84.0MB 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,"Specification2_spec.i","") [49] - GenericResultAtLocation [Line: 91]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [91] - GenericResultAtLocation [Line: 191]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [191] - GenericResultAtLocation [Line: 264]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [264] - GenericResultAtLocation [Line: 468]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [468] - GenericResultAtLocation [Line: 834]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [834] - GenericResultAtLocation [Line: 843]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [843] - GenericResultAtLocation [Line: 943]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [943] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 839]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 66 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.6s, OverallIterations: 12, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 671 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 641 mSDsluCounter, 2284 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1530 mSDsCounter, 116 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1405 IncrementalHoareTripleChecker+Invalid, 1521 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 116 mSolverCounterUnsat, 754 mSDtfsCounter, 1405 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 543 GetRequests, 454 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=635occurred in iteration=11, InterpolantAutomatonStates: 76, 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, 12 MinimizatonAttempts, 118 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 24 LocationsWithAnnotation, 975 PreInvPairs, 1067 NumberOfFragments, 798 HoareAnnotationTreeSize, 975 FomulaSimplifications, 3252 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 24 FomulaSimplificationsInter, 10870 FormulaSimplificationTreeSizeReductionInter, 2.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 947 NumberOfCodeBlocks, 947 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 995 ConstructedInterpolants, 0 QuantifiedInterpolants, 2267 SizeOfPredicates, 17 NumberOfNonLiveVariables, 1578 ConjunctsInSsa, 75 ConjunctsInUnsatCore, 19 InterpolantComputations, 12 PerfectInterpolantSequences, 375/390 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 206]: Loop Invariant Derived loop invariant: ((((((((1 <= pumpRunning) && !((waterLevel == 1))) && !((methaneLevelCritical == 0))) && (tmp == 1)) && (splverifierCounter == 0)) && !((0 == systemActive))) || ((((((1 <= pumpRunning) && (methAndRunningLastTime == 0)) && (methaneLevelCritical == 0)) && (tmp == 1)) && (splverifierCounter == 0)) && !((0 == systemActive)))) || ((((pumpRunning == 0) && (methAndRunningLastTime == 0)) && (tmp == 1)) && (splverifierCounter == 0))) - InvariantResult [Line: 205]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 855]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 271]: Loop Invariant Derived loop invariant: (((((((pumpRunning == \old(pumpRunning)) && (\old(waterLevel) == waterLevel)) || (\old(pumpRunning) < 1)) || (0 == systemActive)) && ((!((\old(pumpRunning) == 0)) || ((pumpRunning == 0) && (\old(waterLevel) == waterLevel))) || !((0 == systemActive)))) && (((!((\old(pumpRunning) == 0)) || !((\old(methAndRunningLastTime) == 0))) || (((pumpRunning == 0) && (methAndRunningLastTime == 0)) && (\old(waterLevel) == waterLevel))) || (0 == systemActive))) && (((!((\old(methAndRunningLastTime) == 0)) || (methAndRunningLastTime == 0)) || (\old(pumpRunning) < 1)) || (0 == systemActive))) RESULT: Ultimate proved your program to be correct! [2023-12-02 17:54:28,831 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_480b1de9-2927-4609-a8e4-409b6f0107b5/bin/utaipan-verify-nQ1chXbOIh/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 Result: TRUE