./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product43.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5da47a1-52c8-4c3f-a5ed-197e01969144/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5da47a1-52c8-4c3f-a5ed-197e01969144/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5da47a1-52c8-4c3f-a5ed-197e01969144/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5da47a1-52c8-4c3f-a5ed-197e01969144/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product43.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5da47a1-52c8-4c3f-a5ed-197e01969144/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5da47a1-52c8-4c3f-a5ed-197e01969144/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --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 80c186986e830d4bb291929eac4e7624996dc1953e9c0441022d003e4def396a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:16:51,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:16:51,623 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:16:51,657 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:16:51,657 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:16:51,659 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:16:51,660 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:16:51,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:16:51,665 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:16:51,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:16:51,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:16:51,669 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:16:51,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:16:51,671 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:16:51,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:16:51,675 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:16:51,676 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:16:51,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:16:51,680 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:16:51,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:16:51,685 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:16:51,687 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:16:51,689 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:16:51,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:16:51,694 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:16:51,694 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:16:51,695 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:16:51,696 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:16:51,697 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:16:51,698 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:16:51,699 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:16:51,700 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:16:51,701 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:16:51,702 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:16:51,704 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:16:51,704 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:16:51,705 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:16:51,706 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:16:51,707 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:16:51,708 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:16:51,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:16:51,710 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5da47a1-52c8-4c3f-a5ed-197e01969144/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 02:16:51,739 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:16:51,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:16:51,739 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:16:51,740 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:16:51,740 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:16:51,741 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:16:51,741 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:16:51,741 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:16:51,742 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:16:51,742 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:16:51,742 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:16:51,742 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:16:51,743 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:16:51,743 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:16:51,743 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:16:51,744 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:16:51,744 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:16:51,744 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:16:51,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:16:51,745 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 02:16:51,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:16:51,746 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 02:16:51,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:16:51,746 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:16:51,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:16:51,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:16:51,747 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 02:16:51,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:16:51,748 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:16:51,748 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:16:51,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:16:51,749 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:16:51,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:16:51,749 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:16:51,750 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:16:51,750 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:16:51,750 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:16:51,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:16:51,751 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:16:51,751 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:16:51,751 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:16:51,751 INFO L138 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_d5da47a1-52c8-4c3f-a5ed-197e01969144/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5da47a1-52c8-4c3f-a5ed-197e01969144/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80c186986e830d4bb291929eac4e7624996dc1953e9c0441022d003e4def396a [2021-11-23 02:16:52,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:16:52,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:16:52,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:16:52,043 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:16:52,044 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:16:52,045 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5da47a1-52c8-4c3f-a5ed-197e01969144/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/minepump_spec2_product43.cil.c [2021-11-23 02:16:52,136 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5da47a1-52c8-4c3f-a5ed-197e01969144/bin/utaipan-EQgc7hIp5V/data/4ba0ae303/0c846cc9eb5548c6abed3dd13b599523/FLAGe626680ba [2021-11-23 02:16:52,700 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:16:52,707 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5da47a1-52c8-4c3f-a5ed-197e01969144/sv-benchmarks/c/product-lines/minepump_spec2_product43.cil.c [2021-11-23 02:16:52,729 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5da47a1-52c8-4c3f-a5ed-197e01969144/bin/utaipan-EQgc7hIp5V/data/4ba0ae303/0c846cc9eb5548c6abed3dd13b599523/FLAGe626680ba [2021-11-23 02:16:53,006 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5da47a1-52c8-4c3f-a5ed-197e01969144/bin/utaipan-EQgc7hIp5V/data/4ba0ae303/0c846cc9eb5548c6abed3dd13b599523 [2021-11-23 02:16:53,013 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:16:53,015 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:16:53,020 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:16:53,020 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:16:53,023 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:16:53,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:16:53" (1/1) ... [2021-11-23 02:16:53,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@521425b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:53, skipping insertion in model container [2021-11-23 02:16:53,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:16:53" (1/1) ... [2021-11-23 02:16:53,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:16:53,080 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:16:53,409 WARN L230 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_d5da47a1-52c8-4c3f-a5ed-197e01969144/sv-benchmarks/c/product-lines/minepump_spec2_product43.cil.c[18403,18416] [2021-11-23 02:16:53,412 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:16:53,429 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:16:53,578 WARN L230 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_d5da47a1-52c8-4c3f-a5ed-197e01969144/sv-benchmarks/c/product-lines/minepump_spec2_product43.cil.c[18403,18416] [2021-11-23 02:16:53,579 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:16:53,597 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:16:53,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:53 WrapperNode [2021-11-23 02:16:53,597 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:16:53,599 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:16:53,599 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:16:53,599 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:16:53,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:53" (1/1) ... [2021-11-23 02:16:53,640 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:53" (1/1) ... [2021-11-23 02:16:53,682 INFO L137 Inliner]: procedures = 55, calls = 154, calls flagged for inlining = 24, calls inlined = 21, statements flattened = 249 [2021-11-23 02:16:53,683 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:16:53,683 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:16:53,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:16:53,684 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:16:53,693 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:53" (1/1) ... [2021-11-23 02:16:53,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:53" (1/1) ... [2021-11-23 02:16:53,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:53" (1/1) ... [2021-11-23 02:16:53,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:53" (1/1) ... [2021-11-23 02:16:53,705 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:53" (1/1) ... [2021-11-23 02:16:53,711 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:53" (1/1) ... [2021-11-23 02:16:53,714 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:53" (1/1) ... [2021-11-23 02:16:53,717 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:16:53,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:16:53,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:16:53,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:16:53,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:53" (1/1) ... [2021-11-23 02:16:53,736 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:16:53,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5da47a1-52c8-4c3f-a5ed-197e01969144/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:16:53,776 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5da47a1-52c8-4c3f-a5ed-197e01969144/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:16:53,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5da47a1-52c8-4c3f-a5ed-197e01969144/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:16:53,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:16:53,827 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-11-23 02:16:53,830 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-11-23 02:16:53,831 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-11-23 02:16:53,831 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-11-23 02:16:53,831 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-11-23 02:16:53,831 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-11-23 02:16:53,831 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-11-23 02:16:53,831 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-11-23 02:16:53,831 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-11-23 02:16:53,831 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-11-23 02:16:53,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:16:53,832 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-11-23 02:16:53,832 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-11-23 02:16:53,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:16:53,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:16:53,907 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:16:53,909 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:16:54,289 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:16:54,370 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:16:54,371 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 02:16:54,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:16:54 BoogieIcfgContainer [2021-11-23 02:16:54,373 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:16:54,375 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:16:54,376 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:16:54,379 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:16:54,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:16:53" (1/3) ... [2021-11-23 02:16:54,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f5ac004 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:16:54, skipping insertion in model container [2021-11-23 02:16:54,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:53" (2/3) ... [2021-11-23 02:16:54,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f5ac004 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:16:54, skipping insertion in model container [2021-11-23 02:16:54,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:16:54" (3/3) ... [2021-11-23 02:16:54,383 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product43.cil.c [2021-11-23 02:16:54,388 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:16:54,388 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:16:54,459 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:16:54,465 INFO L339 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=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:16:54,466 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:16:54,493 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 39 states have internal predecessors, (47), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-23 02:16:54,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 02:16:54,500 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:54,500 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:16:54,501 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:16:54,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:54,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1068864130, now seen corresponding path program 1 times [2021-11-23 02:16:54,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:54,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140266388] [2021-11-23 02:16:54,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:54,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:54,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:54,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:54,705 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:54,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140266388] [2021-11-23 02:16:54,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140266388] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:54,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:16:54,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 02:16:54,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412353026] [2021-11-23 02:16:54,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:54,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 02:16:54,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:16:54,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 02:16:54,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 02:16:54,746 INFO L87 Difference]: Start difference. First operand has 51 states, 33 states have (on average 1.4242424242424243) internal successors, (47), 39 states have internal predecessors, (47), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) 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) [2021-11-23 02:16:54,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:54,810 INFO L93 Difference]: Finished difference Result 100 states and 135 transitions. [2021-11-23 02:16:54,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 02:16:54,812 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 [2021-11-23 02:16:54,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:54,821 INFO L225 Difference]: With dead ends: 100 [2021-11-23 02:16:54,822 INFO L226 Difference]: Without dead ends: 46 [2021-11-23 02:16:54,825 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:16:54,829 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:54,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:16:54,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-23 02:16:54,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-11-23 02:16:54,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 30 states have (on average 1.3) internal successors, (39), 35 states have internal predecessors, (39), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-23 02:16:54,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2021-11-23 02:16:54,874 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 58 transitions. Word has length 17 [2021-11-23 02:16:54,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:54,875 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 58 transitions. [2021-11-23 02:16:54,875 INFO L471 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) [2021-11-23 02:16:54,875 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 58 transitions. [2021-11-23 02:16:54,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 02:16:54,877 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:54,878 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:16:54,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:16:54,878 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:16:54,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:54,879 INFO L85 PathProgramCache]: Analyzing trace with hash -988868657, now seen corresponding path program 1 times [2021-11-23 02:16:54,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:54,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499484249] [2021-11-23 02:16:54,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:54,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:54,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:54,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:54,947 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:54,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499484249] [2021-11-23 02:16:54,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499484249] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:54,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:16:54,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:16:54,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407245117] [2021-11-23 02:16:54,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:54,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:16:54,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:16:54,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:16:54,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:16:54,951 INFO L87 Difference]: Start difference. First operand 46 states and 58 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) [2021-11-23 02:16:54,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:54,988 INFO L93 Difference]: Finished difference Result 69 states and 87 transitions. [2021-11-23 02:16:54,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:16:54,989 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 [2021-11-23 02:16:54,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:54,990 INFO L225 Difference]: With dead ends: 69 [2021-11-23 02:16:54,990 INFO L226 Difference]: Without dead ends: 38 [2021-11-23 02:16:54,991 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:16:54,993 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 7 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:54,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 61 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 02:16:54,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-23 02:16:55,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-11-23 02:16:55,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.32) internal successors, (33), 30 states have internal predecessors, (33), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-23 02:16:55,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2021-11-23 02:16:55,002 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 18 [2021-11-23 02:16:55,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:55,003 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2021-11-23 02:16:55,003 INFO L471 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) [2021-11-23 02:16:55,003 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2021-11-23 02:16:55,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 02:16:55,004 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:55,005 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:16:55,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:16:55,005 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:16:55,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:55,006 INFO L85 PathProgramCache]: Analyzing trace with hash -946950219, now seen corresponding path program 1 times [2021-11-23 02:16:55,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:55,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716397983] [2021-11-23 02:16:55,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:55,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:55,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:55,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:55,120 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:55,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716397983] [2021-11-23 02:16:55,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716397983] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:55,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:16:55,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 02:16:55,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063227557] [2021-11-23 02:16:55,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:55,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 02:16:55,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:16:55,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 02:16:55,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 02:16:55,123 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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) [2021-11-23 02:16:55,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:55,328 INFO L93 Difference]: Finished difference Result 107 states and 135 transitions. [2021-11-23 02:16:55,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 02:16:55,329 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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 20 [2021-11-23 02:16:55,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:55,331 INFO L225 Difference]: With dead ends: 107 [2021-11-23 02:16:55,331 INFO L226 Difference]: Without dead ends: 71 [2021-11-23 02:16:55,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-23 02:16:55,334 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 26 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:55,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 175 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:16:55,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-11-23 02:16:55,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2021-11-23 02:16:55,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 52 states have internal predecessors, (57), 13 states have call successors, (13), 9 states have call predecessors, (13), 9 states have return successors, (13), 11 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-23 02:16:55,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 83 transitions. [2021-11-23 02:16:55,354 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 83 transitions. Word has length 20 [2021-11-23 02:16:55,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:55,354 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 83 transitions. [2021-11-23 02:16:55,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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) [2021-11-23 02:16:55,355 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 83 transitions. [2021-11-23 02:16:55,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-23 02:16:55,357 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:55,357 INFO L514 BasicCegarLoop]: 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] [2021-11-23 02:16:55,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:16:55,358 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:16:55,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:55,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1763171529, now seen corresponding path program 1 times [2021-11-23 02:16:55,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:55,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360938698] [2021-11-23 02:16:55,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:55,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:55,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:55,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 02:16:55,432 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:55,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360938698] [2021-11-23 02:16:55,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360938698] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:55,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:16:55,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:16:55,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294668804] [2021-11-23 02:16:55,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:55,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:16:55,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:16:55,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:16:55,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:16:55,435 INFO L87 Difference]: Start difference. First operand 67 states and 83 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:16:55,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:55,526 INFO L93 Difference]: Finished difference Result 103 states and 130 transitions. [2021-11-23 02:16:55,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:16:55,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2021-11-23 02:16:55,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:55,533 INFO L225 Difference]: With dead ends: 103 [2021-11-23 02:16:55,533 INFO L226 Difference]: Without dead ends: 101 [2021-11-23 02:16:55,533 INFO L932 BasicCegarLoop]: 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 [2021-11-23 02:16:55,543 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 26 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:55,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 73 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:16:55,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-11-23 02:16:55,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2021-11-23 02:16:55,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 66 states have (on average 1.303030303030303) internal successors, (86), 78 states have internal predecessors, (86), 20 states have call successors, (20), 14 states have call predecessors, (20), 14 states have return successors, (22), 17 states have call predecessors, (22), 20 states have call successors, (22) [2021-11-23 02:16:55,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 128 transitions. [2021-11-23 02:16:55,580 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 128 transitions. Word has length 23 [2021-11-23 02:16:55,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:55,581 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 128 transitions. [2021-11-23 02:16:55,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 02:16:55,582 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 128 transitions. [2021-11-23 02:16:55,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-23 02:16:55,594 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:55,594 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-23 02:16:55,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:16:55,595 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:16:55,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:55,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1774287889, now seen corresponding path program 1 times [2021-11-23 02:16:55,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:55,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991562108] [2021-11-23 02:16:55,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:55,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:55,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:55,834 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:16:55,834 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:55,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991562108] [2021-11-23 02:16:55,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991562108] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:16:55,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:16:55,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 02:16:55,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868246783] [2021-11-23 02:16:55,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:16:55,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 02:16:55,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:16:55,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 02:16:55,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-23 02:16:55,841 INFO L87 Difference]: Start difference. First operand 101 states and 128 transitions. Second operand has 9 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 02:16:56,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:16:56,250 INFO L93 Difference]: Finished difference Result 317 states and 406 transitions. [2021-11-23 02:16:56,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 02:16:56,251 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 42 [2021-11-23 02:16:56,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:16:56,263 INFO L225 Difference]: With dead ends: 317 [2021-11-23 02:16:56,263 INFO L226 Difference]: Without dead ends: 247 [2021-11-23 02:16:56,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-11-23 02:16:56,273 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 126 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:16:56,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 165 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 02:16:56,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-11-23 02:16:56,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 219. [2021-11-23 02:16:56,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 147 states have (on average 1.272108843537415) internal successors, (187), 166 states have internal predecessors, (187), 36 states have call successors, (36), 30 states have call predecessors, (36), 35 states have return successors, (58), 33 states have call predecessors, (58), 36 states have call successors, (58) [2021-11-23 02:16:56,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 281 transitions. [2021-11-23 02:16:56,336 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 281 transitions. Word has length 42 [2021-11-23 02:16:56,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:16:56,336 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 281 transitions. [2021-11-23 02:16:56,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.0) internal successors, (32), 9 states have internal predecessors, (32), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 02:16:56,337 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 281 transitions. [2021-11-23 02:16:56,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-23 02:16:56,342 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:16:56,343 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-11-23 02:16:56,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 02:16:56,343 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:16:56,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:16:56,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1878163695, now seen corresponding path program 1 times [2021-11-23 02:16:56,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:16:56,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217535285] [2021-11-23 02:16:56,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:56,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:16:56,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:56,597 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 02:16:56,597 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:16:56,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217535285] [2021-11-23 02:16:56,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217535285] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:16:56,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514842883] [2021-11-23 02:16:56,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:16:56,599 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:16:56,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5da47a1-52c8-4c3f-a5ed-197e01969144/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:16:56,602 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5da47a1-52c8-4c3f-a5ed-197e01969144/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:16:56,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5da47a1-52c8-4c3f-a5ed-197e01969144/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:16:56,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:16:56,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-23 02:16:56,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:16:57,318 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 02:16:57,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:16:57,658 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-23 02:16:57,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514842883] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:16:57,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [34491855] [2021-11-23 02:16:57,677 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2021-11-23 02:16:57,677 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:16:57,682 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:16:57,687 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:16:57,687 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:17:02,265 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 30 for LOIs [2021-11-23 02:17:02,605 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 49 for LOIs [2021-11-23 02:17:02,625 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 39 for LOIs [2021-11-23 02:17:02,638 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:17:06,997 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2227#(and (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp~4#1| 0)) (<= |timeShift___utac_acc__Specification2_spec__2_~tmp~4#1| 2147483647) (<= 0 (+ |timeShift___utac_acc__Specification2_spec__2_~tmp___0~0#1| 2147483648)) (= ~head~0.offset 0) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~10#1|) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification2_spec__2_~tmp___0~0#1|) (<= 0 ~methAndRunningLastTime~0) (<= 0 |old(~methAndRunningLastTime~0)|) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~10#1|) (= |timeShift___utac_acc__Specification2_spec__2_~tmp~4#1| ~methaneLevelCritical~0) (= ~head~0.base 0) (= |#NULL.offset| 0) (<= 0 |timeShift___utac_acc__Specification2_spec__2_~tmp~4#1|) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp___0~0#1| 0)) (not (= ~methAndRunningLastTime~0 0)) (<= |timeShift___utac_acc__Specification2_spec__2_~tmp___0~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= ~systemActive~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2021-11-23 02:17:06,998 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:17:06,998 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:17:06,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 24 [2021-11-23 02:17:06,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250570797] [2021-11-23 02:17:06,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:17:06,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-23 02:17:06,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:17:07,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-23 02:17:07,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=247, Invalid=2105, Unknown=0, NotChecked=0, Total=2352 [2021-11-23 02:17:07,002 INFO L87 Difference]: Start difference. First operand 219 states and 281 transitions. Second operand has 24 states, 18 states have (on average 3.5) internal successors, (63), 19 states have internal predecessors, (63), 7 states have call successors, (11), 5 states have call predecessors, (11), 9 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) [2021-11-23 02:17:08,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:17:08,882 INFO L93 Difference]: Finished difference Result 755 states and 1023 transitions. [2021-11-23 02:17:08,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-23 02:17:08,883 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 18 states have (on average 3.5) internal successors, (63), 19 states have internal predecessors, (63), 7 states have call successors, (11), 5 states have call predecessors, (11), 9 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) Word has length 49 [2021-11-23 02:17:08,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:17:08,897 INFO L225 Difference]: With dead ends: 755 [2021-11-23 02:17:08,898 INFO L226 Difference]: Without dead ends: 538 [2021-11-23 02:17:08,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2299 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=694, Invalid=6112, Unknown=0, NotChecked=0, Total=6806 [2021-11-23 02:17:08,908 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 639 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 411 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:17:08,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [643 Valid, 278 Invalid, 1683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [411 Valid, 1272 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-23 02:17:08,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-11-23 02:17:09,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 427. [2021-11-23 02:17:09,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 286 states have (on average 1.2202797202797202) internal successors, (349), 319 states have internal predecessors, (349), 66 states have call successors, (66), 63 states have call predecessors, (66), 74 states have return successors, (110), 66 states have call predecessors, (110), 66 states have call successors, (110) [2021-11-23 02:17:09,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 525 transitions. [2021-11-23 02:17:09,037 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 525 transitions. Word has length 49 [2021-11-23 02:17:09,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:17:09,038 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 525 transitions. [2021-11-23 02:17:09,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 18 states have (on average 3.5) internal successors, (63), 19 states have internal predecessors, (63), 7 states have call successors, (11), 5 states have call predecessors, (11), 9 states have return successors, (12), 8 states have call predecessors, (12), 7 states have call successors, (12) [2021-11-23 02:17:09,038 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 525 transitions. [2021-11-23 02:17:09,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-23 02:17:09,051 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:17:09,051 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:17:09,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5da47a1-52c8-4c3f-a5ed-197e01969144/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:17:09,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5da47a1-52c8-4c3f-a5ed-197e01969144/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:17:09,267 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:17:09,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:17:09,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1588038623, now seen corresponding path program 1 times [2021-11-23 02:17:09,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:17:09,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490002964] [2021-11-23 02:17:09,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:09,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:17:09,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:17:09,467 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 30 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 02:17:09,467 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:17:09,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490002964] [2021-11-23 02:17:09,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490002964] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:17:09,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1837690220] [2021-11-23 02:17:09,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:09,468 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:17:09,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5da47a1-52c8-4c3f-a5ed-197e01969144/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:17:09,471 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5da47a1-52c8-4c3f-a5ed-197e01969144/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:17:09,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5da47a1-52c8-4c3f-a5ed-197e01969144/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:17:09,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:17:09,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-23 02:17:09,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:17:09,901 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 43 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 02:17:09,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:17:10,247 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 37 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-23 02:17:10,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1837690220] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:17:10,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [917800915] [2021-11-23 02:17:10,256 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2021-11-23 02:17:10,256 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:17:10,257 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:17:10,257 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:17:10,257 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:17:19,648 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 38 for LOIs [2021-11-23 02:17:19,977 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 52 for LOIs [2021-11-23 02:17:19,996 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 316 for LOIs [2021-11-23 02:17:20,066 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:17:30,049 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4548#(and (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp~4#1| 0)) (<= ~methaneLevelCritical~0 1) (<= 0 (+ |timeShift___utac_acc__Specification2_spec__2_~tmp___0~0#1| 2147483648)) (<= 0 ~systemActive~0) (= ~head~0.offset 0) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~10#1|) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification2_spec__2_~tmp___0~0#1|) (<= 0 ~methAndRunningLastTime~0) (<= 0 |old(~methAndRunningLastTime~0)|) (<= |old(~methAndRunningLastTime~0)| 1) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~10#1|) (<= 0 ~methaneLevelCritical~0) (= |timeShift___utac_acc__Specification2_spec__2_~tmp~4#1| ~methaneLevelCritical~0) (= ~head~0.base 0) (= |#NULL.offset| 0) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp___0~0#1| 0)) (not (= ~methAndRunningLastTime~0 0)) (<= ~methAndRunningLastTime~0 1) (<= |timeShift___utac_acc__Specification2_spec__2_~tmp___0~0#1| 2147483647) (<= 0 |#StackHeapBarrier|) (<= ~systemActive~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2021-11-23 02:17:30,049 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 02:17:30,049 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:17:30,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 8] total 20 [2021-11-23 02:17:30,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552154446] [2021-11-23 02:17:30,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 02:17:30,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-23 02:17:30,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:17:30,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-23 02:17:30,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=1841, Unknown=0, NotChecked=0, Total=2070 [2021-11-23 02:17:30,057 INFO L87 Difference]: Start difference. First operand 427 states and 525 transitions. Second operand has 20 states, 18 states have (on average 4.611111111111111) internal successors, (83), 19 states have internal predecessors, (83), 9 states have call successors, (18), 6 states have call predecessors, (18), 8 states have return successors, (18), 7 states have call predecessors, (18), 9 states have call successors, (18) [2021-11-23 02:17:31,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:17:31,633 INFO L93 Difference]: Finished difference Result 1013 states and 1297 transitions. [2021-11-23 02:17:31,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-23 02:17:31,634 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 4.611111111111111) internal successors, (83), 19 states have internal predecessors, (83), 9 states have call successors, (18), 6 states have call predecessors, (18), 8 states have return successors, (18), 7 states have call predecessors, (18), 9 states have call successors, (18) Word has length 66 [2021-11-23 02:17:31,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:17:31,639 INFO L225 Difference]: With dead ends: 1013 [2021-11-23 02:17:31,639 INFO L226 Difference]: Without dead ends: 324 [2021-11-23 02:17:31,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 178 SyntacticMatches, 3 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2652 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=751, Invalid=6905, Unknown=0, NotChecked=0, Total=7656 [2021-11-23 02:17:31,646 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 432 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 1172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:17:31,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [434 Valid, 434 Invalid, 1172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-23 02:17:31,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2021-11-23 02:17:31,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 232. [2021-11-23 02:17:31,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 155 states have (on average 1.1806451612903226) internal successors, (183), 171 states have internal predecessors, (183), 38 states have call successors, (38), 35 states have call predecessors, (38), 38 states have return successors, (49), 37 states have call predecessors, (49), 38 states have call successors, (49) [2021-11-23 02:17:31,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 270 transitions. [2021-11-23 02:17:31,688 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 270 transitions. Word has length 66 [2021-11-23 02:17:31,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:17:31,689 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 270 transitions. [2021-11-23 02:17:31,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 4.611111111111111) internal successors, (83), 19 states have internal predecessors, (83), 9 states have call successors, (18), 6 states have call predecessors, (18), 8 states have return successors, (18), 7 states have call predecessors, (18), 9 states have call successors, (18) [2021-11-23 02:17:31,689 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 270 transitions. [2021-11-23 02:17:31,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-23 02:17:31,691 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:17:31,692 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:17:31,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5da47a1-52c8-4c3f-a5ed-197e01969144/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-23 02:17:31,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5da47a1-52c8-4c3f-a5ed-197e01969144/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:17:31,901 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:17:31,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:17:31,901 INFO L85 PathProgramCache]: Analyzing trace with hash 550042365, now seen corresponding path program 1 times [2021-11-23 02:17:31,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:17:31,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088940751] [2021-11-23 02:17:31,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:31,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:17:31,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:17:32,111 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 33 proven. 10 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-23 02:17:32,111 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:17:32,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088940751] [2021-11-23 02:17:32,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088940751] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:17:32,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070156950] [2021-11-23 02:17:32,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:32,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:17:32,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5da47a1-52c8-4c3f-a5ed-197e01969144/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:17:32,113 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5da47a1-52c8-4c3f-a5ed-197e01969144/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:17:32,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5da47a1-52c8-4c3f-a5ed-197e01969144/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:17:32,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:17:32,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-23 02:17:32,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:17:32,533 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-23 02:17:32,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:17:32,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070156950] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:17:32,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:17:32,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2021-11-23 02:17:32,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364401313] [2021-11-23 02:17:32,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:17:32,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 02:17:32,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:17:32,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 02:17:32,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-11-23 02:17:32,535 INFO L87 Difference]: Start difference. First operand 232 states and 270 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-23 02:17:32,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:17:32,838 INFO L93 Difference]: Finished difference Result 553 states and 663 transitions. [2021-11-23 02:17:32,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 02:17:32,839 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 76 [2021-11-23 02:17:32,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:17:32,842 INFO L225 Difference]: With dead ends: 553 [2021-11-23 02:17:32,842 INFO L226 Difference]: Without dead ends: 323 [2021-11-23 02:17:32,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2021-11-23 02:17:32,844 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 122 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:17:32,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 118 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 02:17:32,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-11-23 02:17:32,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 279. [2021-11-23 02:17:32,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 191 states have (on average 1.1727748691099475) internal successors, (224), 206 states have internal predecessors, (224), 43 states have call successors, (43), 43 states have call predecessors, (43), 44 states have return successors, (57), 42 states have call predecessors, (57), 43 states have call successors, (57) [2021-11-23 02:17:32,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 324 transitions. [2021-11-23 02:17:32,878 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 324 transitions. Word has length 76 [2021-11-23 02:17:32,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:17:32,879 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 324 transitions. [2021-11-23 02:17:32,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 6 states have internal predecessors, (41), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-23 02:17:32,879 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 324 transitions. [2021-11-23 02:17:32,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-23 02:17:32,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:17:32,882 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-23 02:17:32,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5da47a1-52c8-4c3f-a5ed-197e01969144/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:17:33,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5da47a1-52c8-4c3f-a5ed-197e01969144/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-23 02:17:33,087 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:17:33,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:17:33,088 INFO L85 PathProgramCache]: Analyzing trace with hash 227079021, now seen corresponding path program 1 times [2021-11-23 02:17:33,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:17:33,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355326925] [2021-11-23 02:17:33,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:17:33,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:17:33,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:17:33,145 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 02:17:33,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 02:17:33,250 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-23 02:17:33,250 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 02:17:33,251 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 02:17:33,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 02:17:33,257 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:17:33,260 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 02:17:33,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:17:33 BoogieIcfgContainer [2021-11-23 02:17:33,365 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 02:17:33,366 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 02:17:33,366 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 02:17:33,366 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 02:17:33,367 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:16:54" (3/4) ... [2021-11-23 02:17:33,369 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-23 02:17:33,497 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5da47a1-52c8-4c3f-a5ed-197e01969144/bin/utaipan-EQgc7hIp5V/witness.graphml [2021-11-23 02:17:33,497 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 02:17:33,498 INFO L158 Benchmark]: Toolchain (without parser) took 40482.26ms. Allocated memory was 100.7MB in the beginning and 469.8MB in the end (delta: 369.1MB). Free memory was 59.9MB in the beginning and 326.5MB in the end (delta: -266.7MB). Peak memory consumption was 102.3MB. Max. memory is 16.1GB. [2021-11-23 02:17:33,498 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 100.7MB. Free memory is still 77.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 02:17:33,498 INFO L158 Benchmark]: CACSL2BoogieTranslator took 577.92ms. Allocated memory is still 100.7MB. Free memory was 59.6MB in the beginning and 68.4MB in the end (delta: -8.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 02:17:33,499 INFO L158 Benchmark]: Boogie Procedure Inliner took 84.07ms. Allocated memory is still 100.7MB. Free memory was 68.4MB in the beginning and 66.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:17:33,500 INFO L158 Benchmark]: Boogie Preprocessor took 34.00ms. Allocated memory is still 100.7MB. Free memory was 66.0MB in the beginning and 64.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 02:17:33,501 INFO L158 Benchmark]: RCFGBuilder took 655.45ms. Allocated memory is still 100.7MB. Free memory was 64.4MB in the beginning and 42.6MB in the end (delta: 21.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-11-23 02:17:33,502 INFO L158 Benchmark]: TraceAbstraction took 38989.69ms. Allocated memory was 100.7MB in the beginning and 469.8MB in the end (delta: 369.1MB). Free memory was 42.0MB in the beginning and 336.0MB in the end (delta: -294.0MB). Peak memory consumption was 77.2MB. Max. memory is 16.1GB. [2021-11-23 02:17:33,502 INFO L158 Benchmark]: Witness Printer took 131.57ms. Allocated memory is still 469.8MB. Free memory was 336.0MB in the beginning and 326.5MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 02:17:33,505 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 100.7MB. Free memory is still 77.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 577.92ms. Allocated memory is still 100.7MB. Free memory was 59.6MB in the beginning and 68.4MB in the end (delta: -8.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 84.07ms. Allocated memory is still 100.7MB. Free memory was 68.4MB in the beginning and 66.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.00ms. Allocated memory is still 100.7MB. Free memory was 66.0MB in the beginning and 64.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 655.45ms. Allocated memory is still 100.7MB. Free memory was 64.4MB in the beginning and 42.6MB in the end (delta: 21.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 38989.69ms. Allocated memory was 100.7MB in the beginning and 469.8MB in the end (delta: 369.1MB). Free memory was 42.0MB in the beginning and 336.0MB in the end (delta: -294.0MB). Peak memory consumption was 77.2MB. Max. memory is 16.1GB. * Witness Printer took 131.57ms. Allocated memory is still 469.8MB. Free memory was 336.0MB in the beginning and 326.5MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 956]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L57] int waterLevel = 1; [L58] int methaneLevelCritical = 0; [L320] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L517] int cleanupTimeShifts = 4; [L658] int methAndRunningLastTime ; [L767] int pumpRunning = 0; [L768] int systemActive = 1; [L598] int retValue_acc ; [L599] int tmp ; [L603] FCALL select_helpers() [L604] FCALL select_features() [L605] CALL, EXPR valid_product() [L647] int retValue_acc ; [L650] retValue_acc = 1 [L651] return (retValue_acc); [L605] RET, EXPR valid_product() [L605] tmp = valid_product() [L607] COND TRUE \read(tmp) [L609] FCALL setup() [L610] CALL runTest() [L588] CALL __utac_acc__Specification2_spec__1() [L663] methAndRunningLastTime = 0 [L588] RET __utac_acc__Specification2_spec__1() [L589] CALL test() [L699] int splverifierCounter ; [L700] int tmp ; [L701] int tmp___0 ; [L702] int tmp___1 ; [L703] int tmp___2 ; [L706] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L708] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L710] COND TRUE splverifierCounter < 4 [L716] tmp = __VERIFIER_nondet_int() [L718] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=1] [L720] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L75] COND TRUE waterLevel < 2 [L76] waterLevel = waterLevel + 1 [L720] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=2] [L726] tmp___0 = __VERIFIER_nondet_int() [L728] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, waterLevel=2] [L736] tmp___2 = __VERIFIER_nondet_int() [L738] COND TRUE \read(tmp___2) VAL [__VERIFIER_nondet_int()=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___1=118, tmp___2=-2, waterLevel=2] [L753] CALL timeShift() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L774] COND FALSE !(\read(pumpRunning)) VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L781] COND TRUE \read(systemActive) [L783] CALL processEnvironment() [L803] int tmp ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L806] COND TRUE ! pumpRunning [L808] CALL, EXPR isHighWaterLevel() [L918] int retValue_acc ; [L919] int tmp ; [L920] int tmp___0 ; [L924] CALL, EXPR isHighWaterSensorDry() [L137] int retValue_acc ; [L140] COND FALSE !(waterLevel < 2) [L144] retValue_acc = 0 [L145] return (retValue_acc); [L924] RET, EXPR isHighWaterSensorDry() [L924] tmp = isHighWaterSensorDry() [L926] COND FALSE !(\read(tmp)) [L929] tmp___0 = 1 [L931] retValue_acc = tmp___0 [L932] return (retValue_acc); [L808] RET, EXPR isHighWaterLevel() [L808] tmp = isHighWaterLevel() [L810] COND TRUE \read(tmp) [L812] CALL activatePump() [L837] int tmp ; [L841] CALL, EXPR isMethaneAlarm() [L862] int retValue_acc ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L866] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L96] int retValue_acc ; [L99] retValue_acc = methaneLevelCritical [L100] return (retValue_acc); [L866] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L866] retValue_acc = isMethaneLevelCritical() [L868] return (retValue_acc); [L841] RET, EXPR isMethaneAlarm() [L841] tmp = isMethaneAlarm() [L843] COND FALSE !(\read(tmp)) [L847] CALL activatePump__wrappee__highWaterSensor() [L831] pumpRunning = 1 [L847] RET activatePump__wrappee__highWaterSensor() [L812] RET activatePump() [L783] RET processEnvironment() [L789] CALL __utac_acc__Specification2_spec__2() [L668] int tmp ; [L669] int tmp___0 ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L673] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L96] int retValue_acc ; [L99] retValue_acc = methaneLevelCritical [L100] return (retValue_acc); [L673] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L673] tmp = isMethaneLevelCritical() [L675] COND FALSE !(\read(tmp)) [L691] methAndRunningLastTime = 0 VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=2] [L789] RET __utac_acc__Specification2_spec__2() [L753] RET timeShift() VAL [__VERIFIER_nondet_int()=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___1=118, tmp___2=-2, waterLevel=2] [L708] COND TRUE 1 VAL [__VERIFIER_nondet_int()=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___1=118, tmp___2=-2, waterLevel=2] [L710] COND TRUE splverifierCounter < 4 [L716] tmp = __VERIFIER_nondet_int() [L718] COND FALSE !(\read(tmp)) VAL [__VERIFIER_nondet_int()=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=118, tmp___2=-2, waterLevel=2] [L726] tmp___0 = __VERIFIER_nondet_int() [L728] COND TRUE \read(tmp___0) VAL [__VERIFIER_nondet_int()=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___1=118, tmp___2=-2, waterLevel=2] [L730] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L87] COND FALSE !(\read(methaneLevelCritical)) [L90] methaneLevelCritical = 1 [L730] RET changeMethaneLevel() VAL [__VERIFIER_nondet_int()=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___1=118, tmp___2=-2, waterLevel=2] [L736] tmp___2 = __VERIFIER_nondet_int() [L738] COND TRUE \read(tmp___2) VAL [__VERIFIER_nondet_int()=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___1=118, tmp___2=-3, waterLevel=2] [L753] CALL timeShift() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L774] COND TRUE \read(pumpRunning) [L776] CALL lowerWaterLevel() [L63] COND TRUE waterLevel > 0 [L64] waterLevel = waterLevel - 1 [L776] RET lowerWaterLevel() [L781] COND TRUE \read(systemActive) [L783] CALL processEnvironment() [L803] int tmp ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L806] COND FALSE !(! pumpRunning) VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L821] FCALL processEnvironment__wrappee__base() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L783] RET processEnvironment() [L789] CALL __utac_acc__Specification2_spec__2() [L668] int tmp ; [L669] int tmp___0 ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L673] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L96] int retValue_acc ; [L99] retValue_acc = methaneLevelCritical [L100] return (retValue_acc); [L673] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L673] tmp = isMethaneLevelCritical() [L675] COND TRUE \read(tmp) [L677] CALL, EXPR isPumpRunning() [L873] int retValue_acc ; [L876] retValue_acc = pumpRunning [L877] return (retValue_acc); [L677] RET, EXPR isPumpRunning() [L677] tmp___0 = isPumpRunning() [L679] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=1] [L680] COND FALSE !(\read(methAndRunningLastTime)) [L685] methAndRunningLastTime = 1 VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=1] [L789] RET __utac_acc__Specification2_spec__2() [L753] RET timeShift() VAL [__VERIFIER_nondet_int()=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___1=118, tmp___2=-3, waterLevel=1] [L708] COND TRUE 1 VAL [__VERIFIER_nondet_int()=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___1=118, tmp___2=-3, waterLevel=1] [L710] COND TRUE splverifierCounter < 4 [L716] tmp = __VERIFIER_nondet_int() [L718] COND FALSE !(\read(tmp)) VAL [__VERIFIER_nondet_int()=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___1=118, tmp___2=-3, waterLevel=1] [L726] tmp___0 = __VERIFIER_nondet_int() [L728] COND FALSE !(\read(tmp___0)) VAL [__VERIFIER_nondet_int()=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=118, tmp___2=-3, waterLevel=1] [L736] tmp___2 = __VERIFIER_nondet_int() [L738] COND FALSE !(\read(tmp___2)) [L742] tmp___1 = __VERIFIER_nondet_int() [L744] COND FALSE !(\read(tmp___1)) VAL [__VERIFIER_nondet_int()=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=1] [L753] CALL timeShift() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L774] COND TRUE \read(pumpRunning) [L776] CALL lowerWaterLevel() [L63] COND TRUE waterLevel > 0 [L64] waterLevel = waterLevel - 1 [L776] RET lowerWaterLevel() [L781] COND TRUE \read(systemActive) [L783] CALL processEnvironment() [L803] int tmp ; VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L806] COND FALSE !(! pumpRunning) VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L821] FCALL processEnvironment__wrappee__base() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L783] RET processEnvironment() [L789] CALL __utac_acc__Specification2_spec__2() [L668] int tmp ; [L669] int tmp___0 ; VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L673] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L96] int retValue_acc ; [L99] retValue_acc = methaneLevelCritical [L100] return (retValue_acc); [L673] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] [L673] tmp = isMethaneLevelCritical() [L675] COND TRUE \read(tmp) [L677] CALL, EXPR isPumpRunning() [L873] int retValue_acc ; [L876] retValue_acc = pumpRunning [L877] return (retValue_acc); [L677] RET, EXPR isPumpRunning() [L677] tmp___0 = isPumpRunning() [L679] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=0] [L680] COND TRUE \read(methAndRunningLastTime) [L682] CALL __automaton_fail() [L956] reach_error() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 38.8s, OverallIterations: 9, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1396 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1378 mSDsluCounter, 1353 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1184 mSDsCounter, 791 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2740 IncrementalHoareTripleChecker+Invalid, 3531 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 791 mSolverCounterUnsat, 378 mSDtfsCounter, 2740 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 596 GetRequests, 382 SyntacticMatches, 7 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5023 ImplicationChecksByTransitivity, 16.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=427occurred in iteration=6, InterpolantAutomatonStates: 127, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 279 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 581 NumberOfCodeBlocks, 581 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 604 ConstructedInterpolants, 0 QuantifiedInterpolants, 1895 SizeOfPredicates, 27 NumberOfNonLiveVariables, 1349 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 13 InterpolantComputations, 6 PerfectInterpolantSequences, 324/373 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-23 02:17:33,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d5da47a1-52c8-4c3f-a5ed-197e01969144/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE