./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec5_product35.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_332db945-8f2e-4803-af85-d058d90964c9/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_332db945-8f2e-4803-af85-d058d90964c9/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_332db945-8f2e-4803-af85-d058d90964c9/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_332db945-8f2e-4803-af85-d058d90964c9/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec5_product35.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_332db945-8f2e-4803-af85-d058d90964c9/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_332db945-8f2e-4803-af85-d058d90964c9/bin/utaipan-Q6hlc19bkW --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 45ba8c3ee5105630bc9146965d68439e6204903aca4c5a31cd4f017e456c8589 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 15:05:48,075 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:05:48,077 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:05:48,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:05:48,111 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:05:48,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:05:48,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:05:48,115 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:05:48,117 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:05:48,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:05:48,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:05:48,121 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:05:48,121 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:05:48,122 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:05:48,123 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:05:48,125 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:05:48,126 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:05:48,127 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:05:48,128 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:05:48,130 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:05:48,132 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:05:48,133 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:05:48,134 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:05:48,135 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:05:48,139 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:05:48,139 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:05:48,140 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:05:48,141 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:05:48,141 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:05:48,142 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:05:48,143 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:05:48,144 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:05:48,145 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:05:48,146 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:05:48,147 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:05:48,147 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:05:48,148 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:05:48,148 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:05:48,148 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:05:48,149 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:05:48,150 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:05:48,151 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_332db945-8f2e-4803-af85-d058d90964c9/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 15:05:48,174 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:05:48,174 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:05:48,174 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:05:48,175 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:05:48,175 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:05:48,176 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:05:48,176 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:05:48,176 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:05:48,176 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:05:48,177 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:05:48,177 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:05:48,177 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:05:48,177 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:05:48,178 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:05:48,178 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:05:48,178 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:05:48,179 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:05:48,179 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:05:48,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:05:48,180 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:05:48,180 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:05:48,180 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:05:48,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:05:48,181 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:05:48,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:05:48,181 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:05:48,182 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:05:48,182 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:05:48,182 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:05:48,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:05:48,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:05:48,183 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:05:48,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:05:48,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:05:48,184 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:05:48,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:05:48,184 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:05:48,185 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:05:48,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:05:48,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:05:48,185 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:05:48,186 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_332db945-8f2e-4803-af85-d058d90964c9/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_332db945-8f2e-4803-af85-d058d90964c9/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45ba8c3ee5105630bc9146965d68439e6204903aca4c5a31cd4f017e456c8589 [2022-11-23 15:05:48,430 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:05:48,451 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:05:48,454 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:05:48,455 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:05:48,456 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:05:48,457 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_332db945-8f2e-4803-af85-d058d90964c9/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/product-lines/minepump_spec5_product35.cil.c [2022-11-23 15:05:51,579 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:05:51,872 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:05:51,873 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_332db945-8f2e-4803-af85-d058d90964c9/sv-benchmarks/c/product-lines/minepump_spec5_product35.cil.c [2022-11-23 15:05:51,884 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_332db945-8f2e-4803-af85-d058d90964c9/bin/utaipan-Q6hlc19bkW/data/5203c341f/8dd2b0a1b02941eea3ceb659a13630c3/FLAGe2894cdda [2022-11-23 15:05:51,898 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_332db945-8f2e-4803-af85-d058d90964c9/bin/utaipan-Q6hlc19bkW/data/5203c341f/8dd2b0a1b02941eea3ceb659a13630c3 [2022-11-23 15:05:51,901 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:05:51,902 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:05:51,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:05:51,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:05:51,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:05:51,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:05:51" (1/1) ... [2022-11-23 15:05:51,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@182e90d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:51, skipping insertion in model container [2022-11-23 15:05:51,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:05:51" (1/1) ... [2022-11-23 15:05:51,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:05:51,955 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:05:52,095 WARN L237 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_332db945-8f2e-4803-af85-d058d90964c9/sv-benchmarks/c/product-lines/minepump_spec5_product35.cil.c[1605,1618] [2022-11-23 15:05:52,257 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:05:52,274 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:05:52,297 WARN L237 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_332db945-8f2e-4803-af85-d058d90964c9/sv-benchmarks/c/product-lines/minepump_spec5_product35.cil.c[1605,1618] [2022-11-23 15:05:52,376 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:05:52,407 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:05:52,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:52 WrapperNode [2022-11-23 15:05:52,407 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:05:52,409 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:05:52,409 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:05:52,409 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:05:52,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:52" (1/1) ... [2022-11-23 15:05:52,441 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:52" (1/1) ... [2022-11-23 15:05:52,471 INFO L138 Inliner]: procedures = 55, calls = 98, calls flagged for inlining = 24, calls inlined = 20, statements flattened = 179 [2022-11-23 15:05:52,472 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:05:52,473 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:05:52,473 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:05:52,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:05:52,483 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:52" (1/1) ... [2022-11-23 15:05:52,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:52" (1/1) ... [2022-11-23 15:05:52,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:52" (1/1) ... [2022-11-23 15:05:52,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:52" (1/1) ... [2022-11-23 15:05:52,490 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:52" (1/1) ... [2022-11-23 15:05:52,495 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:52" (1/1) ... [2022-11-23 15:05:52,496 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:52" (1/1) ... [2022-11-23 15:05:52,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:52" (1/1) ... [2022-11-23 15:05:52,499 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:05:52,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:05:52,500 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:05:52,501 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:05:52,501 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:52" (1/1) ... [2022-11-23 15:05:52,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:05:52,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_332db945-8f2e-4803-af85-d058d90964c9/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:05:52,558 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_332db945-8f2e-4803-af85-d058d90964c9/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:05:52,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_332db945-8f2e-4803-af85-d058d90964c9/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:05:52,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:05:52,624 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-23 15:05:52,624 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-23 15:05:52,624 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-23 15:05:52,624 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-23 15:05:52,624 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-23 15:05:52,625 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-23 15:05:52,625 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-23 15:05:52,625 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-23 15:05:52,625 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2022-11-23 15:05:52,626 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2022-11-23 15:05:52,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:05:52,627 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-23 15:05:52,627 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-23 15:05:52,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:05:52,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:05:52,734 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:05:52,737 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:05:52,999 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:05:53,218 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:05:53,218 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 15:05:53,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:05:53 BoogieIcfgContainer [2022-11-23 15:05:53,221 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:05:53,224 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:05:53,224 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:05:53,236 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:05:53,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:05:51" (1/3) ... [2022-11-23 15:05:53,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac0031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:05:53, skipping insertion in model container [2022-11-23 15:05:53,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:05:52" (2/3) ... [2022-11-23 15:05:53,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac0031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:05:53, skipping insertion in model container [2022-11-23 15:05:53,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:05:53" (3/3) ... [2022-11-23 15:05:53,239 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product35.cil.c [2022-11-23 15:05:53,268 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:05:53,269 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:05:53,320 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:05:53,327 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@19ae5974, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:05:53,327 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:05:53,332 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) [2022-11-23 15:05:53,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-23 15:05:53,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:05:53,342 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:05:53,342 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:05:53,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:05:53,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1867634907, now seen corresponding path program 1 times [2022-11-23 15:05:53,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:05:53,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126173480] [2022-11-23 15:05:53,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:05:53,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:05:53,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:05:53,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 15:05:53,550 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:05:53,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126173480] [2022-11-23 15:05:53,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126173480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:05:53,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:05:53,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 15:05:53,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608742658] [2022-11-23 15:05:53,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:05:53,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 15:05:53,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:05:53,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 15:05:53,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 15:05:53,591 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 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 15:05:53,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:05:53,653 INFO L93 Difference]: Finished difference Result 100 states and 135 transitions. [2022-11-23 15:05:53,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 15:05:53,656 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2022-11-23 15:05:53,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:05:53,665 INFO L225 Difference]: With dead ends: 100 [2022-11-23 15:05:53,665 INFO L226 Difference]: Without dead ends: 46 [2022-11-23 15:05:53,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 15:05:53,672 INFO L413 NwaCegarLoop]: 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 [2022-11-23 15:05:53,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 49 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:05:53,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-23 15:05:53,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-11-23 15:05:53,712 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) [2022-11-23 15:05:53,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2022-11-23 15:05:53,716 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 58 transitions. Word has length 21 [2022-11-23 15:05:53,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:05:53,716 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 58 transitions. [2022-11-23 15:05:53,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 15:05:53,717 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 58 transitions. [2022-11-23 15:05:53,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-23 15:05:53,719 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:05:53,719 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:05:53,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:05:53,720 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:05:53,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:05:53,721 INFO L85 PathProgramCache]: Analyzing trace with hash 333823414, now seen corresponding path program 1 times [2022-11-23 15:05:53,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:05:53,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653353281] [2022-11-23 15:05:53,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:05:53,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:05:53,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:05:53,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 15:05:53,857 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:05:53,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653353281] [2022-11-23 15:05:53,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653353281] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:05:53,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:05:53,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:05:53,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354239318] [2022-11-23 15:05:53,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:05:53,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:05:53,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:05:53,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:05:53,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:05:53,864 INFO L87 Difference]: Start difference. First operand 46 states and 58 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 15:05:53,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:05:53,920 INFO L93 Difference]: Finished difference Result 69 states and 87 transitions. [2022-11-23 15:05:53,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:05:53,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2022-11-23 15:05:53,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:05:53,922 INFO L225 Difference]: With dead ends: 69 [2022-11-23 15:05:53,922 INFO L226 Difference]: Without dead ends: 38 [2022-11-23 15:05:53,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:05:53,924 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 7 mSDsluCounter, 26 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 [2022-11-23 15:05:53,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 61 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:05:53,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-23 15:05:53,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-11-23 15:05:53,932 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) [2022-11-23 15:05:53,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2022-11-23 15:05:53,933 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 22 [2022-11-23 15:05:53,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:05:53,934 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2022-11-23 15:05:53,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 15:05:53,934 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2022-11-23 15:05:53,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-23 15:05:53,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:05:53,935 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:05:53,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:05:53,936 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:05:53,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:05:53,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1844053297, now seen corresponding path program 1 times [2022-11-23 15:05:53,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:05:53,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668509648] [2022-11-23 15:05:53,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:05:53,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:05:53,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:05:54,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 15:05:54,237 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:05:54,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668509648] [2022-11-23 15:05:54,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668509648] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:05:54,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:05:54,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 15:05:54,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223289970] [2022-11-23 15:05:54,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:05:54,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 15:05:54,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:05:54,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 15:05:54,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:05:54,240 INFO L87 Difference]: Start difference. First operand 38 states and 47 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 15:05:54,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:05:54,611 INFO L93 Difference]: Finished difference Result 145 states and 181 transitions. [2022-11-23 15:05:54,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 15:05:54,611 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2022-11-23 15:05:54,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:05:54,613 INFO L225 Difference]: With dead ends: 145 [2022-11-23 15:05:54,614 INFO L226 Difference]: Without dead ends: 109 [2022-11-23 15:05:54,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-11-23 15:05:54,616 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 77 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:05:54,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 289 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:05:54,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-11-23 15:05:54,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 76. [2022-11-23 15:05:54,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 50 states have (on average 1.26) internal successors, (63), 56 states have internal predecessors, (63), 13 states have call successors, (13), 12 states have call predecessors, (13), 12 states have return successors, (15), 12 states have call predecessors, (15), 13 states have call successors, (15) [2022-11-23 15:05:54,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 91 transitions. [2022-11-23 15:05:54,636 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 91 transitions. Word has length 24 [2022-11-23 15:05:54,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:05:54,636 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 91 transitions. [2022-11-23 15:05:54,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 15:05:54,637 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 91 transitions. [2022-11-23 15:05:54,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-23 15:05:54,638 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:05:54,638 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:05:54,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:05:54,639 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:05:54,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:05:54,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1738114571, now seen corresponding path program 1 times [2022-11-23 15:05:54,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:05:54,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395447057] [2022-11-23 15:05:54,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:05:54,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:05:54,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:05:55,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 15:05:55,073 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:05:55,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395447057] [2022-11-23 15:05:55,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395447057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:05:55,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:05:55,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 15:05:55,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687802510] [2022-11-23 15:05:55,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:05:55,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 15:05:55,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:05:55,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 15:05:55,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-23 15:05:55,078 INFO L87 Difference]: Start difference. First operand 76 states and 91 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 15:05:55,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:05:55,253 INFO L93 Difference]: Finished difference Result 248 states and 313 transitions. [2022-11-23 15:05:55,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 15:05:55,254 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2022-11-23 15:05:55,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:05:55,263 INFO L225 Difference]: With dead ends: 248 [2022-11-23 15:05:55,264 INFO L226 Difference]: Without dead ends: 174 [2022-11-23 15:05:55,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-23 15:05:55,273 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 80 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:05:55,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 188 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:05:55,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-11-23 15:05:55,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 101. [2022-11-23 15:05:55,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 69 states have (on average 1.2753623188405796) internal successors, (88), 74 states have internal predecessors, (88), 15 states have call successors, (15), 15 states have call predecessors, (15), 16 states have return successors, (17), 15 states have call predecessors, (17), 15 states have call successors, (17) [2022-11-23 15:05:55,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 120 transitions. [2022-11-23 15:05:55,320 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 120 transitions. Word has length 27 [2022-11-23 15:05:55,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:05:55,320 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 120 transitions. [2022-11-23 15:05:55,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 15:05:55,320 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 120 transitions. [2022-11-23 15:05:55,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-23 15:05:55,326 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:05:55,326 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:05:55,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:05:55,326 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:05:55,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:05:55,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1514925428, now seen corresponding path program 1 times [2022-11-23 15:05:55,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:05:55,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908080972] [2022-11-23 15:05:55,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:05:55,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:05:55,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:05:55,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 15:05:55,552 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:05:55,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908080972] [2022-11-23 15:05:55,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908080972] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:05:55,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:05:55,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 15:05:55,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75456957] [2022-11-23 15:05:55,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:05:55,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 15:05:55,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:05:55,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 15:05:55,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:05:55,560 INFO L87 Difference]: Start difference. First operand 101 states and 120 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 15:05:56,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:05:56,011 INFO L93 Difference]: Finished difference Result 260 states and 314 transitions. [2022-11-23 15:05:56,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 15:05:56,012 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 30 [2022-11-23 15:05:56,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:05:56,019 INFO L225 Difference]: With dead ends: 260 [2022-11-23 15:05:56,019 INFO L226 Difference]: Without dead ends: 200 [2022-11-23 15:05:56,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2022-11-23 15:05:56,030 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 130 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:05:56,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 266 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 15:05:56,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-11-23 15:05:56,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 153. [2022-11-23 15:05:56,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 105 states have (on average 1.2666666666666666) internal successors, (133), 114 states have internal predecessors, (133), 23 states have call successors, (23), 21 states have call predecessors, (23), 24 states have return successors, (27), 23 states have call predecessors, (27), 23 states have call successors, (27) [2022-11-23 15:05:56,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 183 transitions. [2022-11-23 15:05:56,094 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 183 transitions. Word has length 30 [2022-11-23 15:05:56,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:05:56,095 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 183 transitions. [2022-11-23 15:05:56,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 15:05:56,095 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 183 transitions. [2022-11-23 15:05:56,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-23 15:05:56,097 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:05:56,097 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:05:56,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:05:56,097 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:05:56,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:05:56,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1138650889, now seen corresponding path program 1 times [2022-11-23 15:05:56,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:05:56,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61034377] [2022-11-23 15:05:56,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:05:56,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:05:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:05:56,201 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 15:05:56,201 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:05:56,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61034377] [2022-11-23 15:05:56,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61034377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:05:56,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:05:56,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:05:56,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480077570] [2022-11-23 15:05:56,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:05:56,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:05:56,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:05:56,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:05:56,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:05:56,205 INFO L87 Difference]: Start difference. First operand 153 states and 183 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-23 15:05:56,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:05:56,275 INFO L93 Difference]: Finished difference Result 245 states and 293 transitions. [2022-11-23 15:05:56,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:05:56,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 44 [2022-11-23 15:05:56,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:05:56,277 INFO L225 Difference]: With dead ends: 245 [2022-11-23 15:05:56,277 INFO L226 Difference]: Without dead ends: 136 [2022-11-23 15:05:56,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:05:56,278 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 17 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:05:56,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 84 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:05:56,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-11-23 15:05:56,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2022-11-23 15:05:56,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 93 states have (on average 1.2258064516129032) internal successors, (114), 101 states have internal predecessors, (114), 21 states have call successors, (21), 19 states have call predecessors, (21), 21 states have return successors, (24), 21 states have call predecessors, (24), 21 states have call successors, (24) [2022-11-23 15:05:56,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 159 transitions. [2022-11-23 15:05:56,309 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 159 transitions. Word has length 44 [2022-11-23 15:05:56,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:05:56,309 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 159 transitions. [2022-11-23 15:05:56,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-23 15:05:56,310 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 159 transitions. [2022-11-23 15:05:56,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-23 15:05:56,311 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:05:56,311 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:05:56,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 15:05:56,311 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:05:56,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:05:56,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1042267128, now seen corresponding path program 1 times [2022-11-23 15:05:56,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:05:56,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508663052] [2022-11-23 15:05:56,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:05:56,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:05:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:05:56,543 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 15:05:56,543 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:05:56,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508663052] [2022-11-23 15:05:56,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508663052] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:05:56,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:05:56,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 15:05:56,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608790316] [2022-11-23 15:05:56,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:05:56,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 15:05:56,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:05:56,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 15:05:56,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-23 15:05:56,546 INFO L87 Difference]: Start difference. First operand 136 states and 159 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-23 15:05:56,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:05:56,875 INFO L93 Difference]: Finished difference Result 250 states and 313 transitions. [2022-11-23 15:05:56,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 15:05:56,875 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 49 [2022-11-23 15:05:56,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:05:56,877 INFO L225 Difference]: With dead ends: 250 [2022-11-23 15:05:56,877 INFO L226 Difference]: Without dead ends: 190 [2022-11-23 15:05:56,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-11-23 15:05:56,878 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 79 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:05:56,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 150 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:05:56,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-11-23 15:05:56,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 145. [2022-11-23 15:05:56,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 98 states have (on average 1.2244897959183674) internal successors, (120), 109 states have internal predecessors, (120), 23 states have call successors, (23), 20 states have call predecessors, (23), 23 states have return successors, (29), 22 states have call predecessors, (29), 23 states have call successors, (29) [2022-11-23 15:05:56,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 172 transitions. [2022-11-23 15:05:56,919 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 172 transitions. Word has length 49 [2022-11-23 15:05:56,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:05:56,919 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 172 transitions. [2022-11-23 15:05:56,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-23 15:05:56,919 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 172 transitions. [2022-11-23 15:05:56,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-23 15:05:56,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:05:56,921 INFO L195 NwaCegarLoop]: 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, 1, 1, 1] [2022-11-23 15:05:56,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 15:05:56,921 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:05:56,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:05:56,922 INFO L85 PathProgramCache]: Analyzing trace with hash 638797489, now seen corresponding path program 1 times [2022-11-23 15:05:56,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:05:56,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110435654] [2022-11-23 15:05:56,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:05:56,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:05:56,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:05:57,061 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 15:05:57,062 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:05:57,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110435654] [2022-11-23 15:05:57,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110435654] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:05:57,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769290664] [2022-11-23 15:05:57,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:05:57,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:05:57,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_332db945-8f2e-4803-af85-d058d90964c9/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:05:57,066 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_332db945-8f2e-4803-af85-d058d90964c9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:05:57,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_332db945-8f2e-4803-af85-d058d90964c9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:05:57,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:05:57,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-23 15:05:57,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:05:57,345 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:05:57,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:05:57,537 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 15:05:57,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769290664] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:05:57,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2096716809] [2022-11-23 15:05:57,558 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2022-11-23 15:05:57,558 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:05:57,564 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:05:57,569 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:05:57,570 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:06:01,036 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 57 for LOIs [2022-11-23 15:06:01,048 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 30 for LOIs [2022-11-23 15:06:01,399 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 21 for LOIs [2022-11-23 15:06:01,401 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 33 for LOIs [2022-11-23 15:06:01,403 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:06:05,798 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3585#(and (= |timeShift_getWaterLevel_~retValue_acc~7#1| |timeShift_getWaterLevel_#res#1|) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1| 0)) (<= 0 ~systemActive~0) (= ~methaneLevelCritical~0 0) (<= 0 (+ 2147483648 |old(~pumpRunning~0)|)) (= ~head~0.offset 0) (<= |old(~pumpRunning~0)| 2147483647) (= ~pumpRunning~0 |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1|) (= |timeShift___utac_acc__Specification5_spec__3_~tmp~7#1| |timeShift_getWaterLevel_#res#1|) (= |timeShift_getWaterLevel_~retValue_acc~7#1| ~waterLevel~0) (= ~head~0.base 0) (= |#NULL.offset| 0) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp~7#1| 2)) (<= 0 (+ |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1| 2147483648)) (<= |timeShift___utac_acc__Specification5_spec__3_~tmp~7#1| 2147483647) (<= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1| 2147483647) (= ~switchedOnBeforeTS~0 0) (<= 0 |#StackHeapBarrier|) (<= 0 (+ |timeShift_getWaterLevel_~retValue_acc~7#1| 2147483648)) (<= ~systemActive~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-23 15:06:05,799 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:06:05,799 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:06:05,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 8 [2022-11-23 15:06:05,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49387952] [2022-11-23 15:06:05,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:06:05,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 15:06:05,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:06:05,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 15:06:05,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1094, Unknown=0, NotChecked=0, Total=1260 [2022-11-23 15:06:05,801 INFO L87 Difference]: Start difference. First operand 145 states and 172 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-23 15:06:06,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:06:06,224 INFO L93 Difference]: Finished difference Result 455 states and 550 transitions. [2022-11-23 15:06:06,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 15:06:06,225 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 52 [2022-11-23 15:06:06,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:06:06,227 INFO L225 Difference]: With dead ends: 455 [2022-11-23 15:06:06,227 INFO L226 Difference]: Without dead ends: 351 [2022-11-23 15:06:06,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=208, Invalid=1432, Unknown=0, NotChecked=0, Total=1640 [2022-11-23 15:06:06,229 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 132 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:06:06,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 291 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:06:06,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2022-11-23 15:06:06,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 323. [2022-11-23 15:06:06,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 216 states have (on average 1.1898148148148149) internal successors, (257), 240 states have internal predecessors, (257), 52 states have call successors, (52), 47 states have call predecessors, (52), 54 states have return successors, (72), 51 states have call predecessors, (72), 52 states have call successors, (72) [2022-11-23 15:06:06,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 381 transitions. [2022-11-23 15:06:06,301 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 381 transitions. Word has length 52 [2022-11-23 15:06:06,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:06:06,302 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 381 transitions. [2022-11-23 15:06:06,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-23 15:06:06,302 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 381 transitions. [2022-11-23 15:06:06,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-23 15:06:06,305 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:06:06,305 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:06:06,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_332db945-8f2e-4803-af85-d058d90964c9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 15:06:06,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_332db945-8f2e-4803-af85-d058d90964c9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:06:06,511 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:06:06,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:06:06,512 INFO L85 PathProgramCache]: Analyzing trace with hash -657894923, now seen corresponding path program 1 times [2022-11-23 15:06:06,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:06:06,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773423108] [2022-11-23 15:06:06,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:06:06,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:06:06,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:06:06,636 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 15:06:06,636 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:06:06,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773423108] [2022-11-23 15:06:06,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773423108] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:06:06,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:06:06,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 15:06:06,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412273719] [2022-11-23 15:06:06,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:06:06,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 15:06:06,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:06:06,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 15:06:06,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:06:06,639 INFO L87 Difference]: Start difference. First operand 323 states and 381 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-23 15:06:06,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:06:06,764 INFO L93 Difference]: Finished difference Result 613 states and 727 transitions. [2022-11-23 15:06:06,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 15:06:06,765 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 55 [2022-11-23 15:06:06,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:06:06,766 INFO L225 Difference]: With dead ends: 613 [2022-11-23 15:06:06,767 INFO L226 Difference]: Without dead ends: 90 [2022-11-23 15:06:06,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 15:06:06,769 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 31 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:06:06,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 110 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:06:06,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-11-23 15:06:06,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 83. [2022-11-23 15:06:06,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 58 states have (on average 1.1206896551724137) internal successors, (65), 61 states have internal predecessors, (65), 12 states have call successors, (12), 12 states have call predecessors, (12), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-23 15:06:06,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 89 transitions. [2022-11-23 15:06:06,783 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 89 transitions. Word has length 55 [2022-11-23 15:06:06,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:06:06,784 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 89 transitions. [2022-11-23 15:06:06,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-23 15:06:06,784 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 89 transitions. [2022-11-23 15:06:06,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-23 15:06:06,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:06:06,785 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:06:06,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 15:06:06,786 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:06:06,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:06:06,786 INFO L85 PathProgramCache]: Analyzing trace with hash 74301078, now seen corresponding path program 1 times [2022-11-23 15:06:06,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:06:06,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814038436] [2022-11-23 15:06:06,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:06:06,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:06:06,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:06:07,082 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-23 15:06:07,082 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:06:07,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814038436] [2022-11-23 15:06:07,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814038436] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:06:07,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062598961] [2022-11-23 15:06:07,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:06:07,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:06:07,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_332db945-8f2e-4803-af85-d058d90964c9/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:06:07,101 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_332db945-8f2e-4803-af85-d058d90964c9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:06:07,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_332db945-8f2e-4803-af85-d058d90964c9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 15:06:07,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:06:07,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-23 15:06:07,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:06:07,567 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 15:06:07,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:06:07,963 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-23 15:06:07,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062598961] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:06:07,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1663916587] [2022-11-23 15:06:07,966 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2022-11-23 15:06:07,966 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:06:07,967 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:06:07,967 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:06:07,967 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:06:15,713 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 150 for LOIs [2022-11-23 15:06:15,761 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 50 for LOIs [2022-11-23 15:06:16,448 INFO L197 IcfgInterpreter]: Interpreting procedure isPumpRunning with input of size 26 for LOIs [2022-11-23 15:06:16,450 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 33 for LOIs [2022-11-23 15:06:16,452 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:06:24,507 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6310#(and (<= |timeShift_isHighWaterLevel_~tmp~6#1| 1) (<= |timeShift_isHighWaterLevel_#res#1| 1) (<= 0 |timeShift_isHighWaterLevel_#res#1|) (= |timeShift_getWaterLevel_~retValue_acc~7#1| |timeShift_getWaterLevel_#res#1|) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1| 0)) (<= 0 |old(~pumpRunning~0)|) (<= 0 |timeShift_processEnvironment_~tmp~5#1|) (<= |timeShift_isHighWaterSensorDry_#res#1| 1) (<= 0 ~systemActive~0) (= ~methaneLevelCritical~0 0) (<= 0 |old(~switchedOnBeforeTS~0)|) (<= |timeShift_isHighWaterLevel_~retValue_acc~11#1| 1) (= ~head~0.offset 0) (<= 0 |timeShift_isHighWaterSensorDry_#res#1|) (<= |old(~switchedOnBeforeTS~0)| 0) (<= 0 |timeShift_isHighWaterSensorDry_~retValue_acc~8#1|) (<= |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1| 1) (<= |old(~pumpRunning~0)| 0) (<= 0 |timeShift_isHighWaterLevel_~tmp~6#1|) (= |timeShift___utac_acc__Specification5_spec__3_~tmp~7#1| |timeShift_getWaterLevel_#res#1|) (<= 0 |timeShift_isHighWaterLevel_~tmp___0~1#1|) (= |timeShift_getWaterLevel_~retValue_acc~7#1| ~waterLevel~0) (<= 0 |timeShift_isHighWaterLevel_~retValue_acc~11#1|) (<= |timeShift_processEnvironment_~tmp~5#1| 1) (= ~head~0.base 0) (= |#NULL.offset| 0) (<= |timeShift_isHighWaterSensorDry_~retValue_acc~8#1| 1) (not (= |timeShift___utac_acc__Specification5_spec__3_~tmp~7#1| 2)) (<= |timeShift_isHighWaterLevel_~tmp___0~1#1| 1) (<= |timeShift___utac_acc__Specification5_spec__3_~tmp~7#1| 2147483647) (<= 0 |timeShift___utac_acc__Specification5_spec__3_~tmp___0~2#1|) (= ~switchedOnBeforeTS~0 0) (<= 0 |#StackHeapBarrier|) (<= 0 (+ |timeShift_getWaterLevel_~retValue_acc~7#1| 2147483648)) (= ~pumpRunning~0 1) (<= ~systemActive~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-23 15:06:24,508 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:06:24,508 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 15:06:24,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 10] total 23 [2022-11-23 15:06:24,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99945965] [2022-11-23 15:06:24,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 15:06:24,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-23 15:06:24,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:06:24,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-23 15:06:24,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=2141, Unknown=0, NotChecked=0, Total=2450 [2022-11-23 15:06:24,511 INFO L87 Difference]: Start difference. First operand 83 states and 89 transitions. Second operand has 23 states, 21 states have (on average 4.333333333333333) internal successors, (91), 22 states have internal predecessors, (91), 8 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2022-11-23 15:06:25,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:06:25,108 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2022-11-23 15:06:25,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 15:06:25,109 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 4.333333333333333) internal successors, (91), 22 states have internal predecessors, (91), 8 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) Word has length 58 [2022-11-23 15:06:25,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:06:25,109 INFO L225 Difference]: With dead ends: 104 [2022-11-23 15:06:25,109 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 15:06:25,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 136 SyntacticMatches, 4 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1258 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=495, Invalid=3165, Unknown=0, NotChecked=0, Total=3660 [2022-11-23 15:06:25,112 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 196 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:06:25,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 149 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 15:06:25,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 15:06:25,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 15:06:25,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 15:06:25,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 15:06:25,121 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2022-11-23 15:06:25,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:06:25,121 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 15:06:25,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 4.333333333333333) internal successors, (91), 22 states have internal predecessors, (91), 8 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2022-11-23 15:06:25,122 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 15:06:25,122 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 15:06:25,124 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 15:06:25,145 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_332db945-8f2e-4803-af85-d058d90964c9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 15:06:25,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_332db945-8f2e-4803-af85-d058d90964c9/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-23 15:06:25,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-23 15:06:29,695 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 768 774) no Hoare annotation was computed. [2022-11-23 15:06:29,696 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 768 774) the Hoare annotation is: true [2022-11-23 15:06:29,696 INFO L902 garLoopResultBuilder]: At program point changeMethaneLevelENTRY(lines 665 676) the Hoare annotation is: true [2022-11-23 15:06:29,696 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 665 676) no Hoare annotation was computed. [2022-11-23 15:06:29,696 INFO L895 garLoopResultBuilder]: At program point L795(line 795) the Hoare annotation is: (let ((.cse3 (not (= |old(~waterLevel~0)| 1)))) (let ((.cse1 (= |old(~pumpRunning~0)| 0)) (.cse0 (and (not (= ~pumpRunning~0 0)) (or .cse3 (= ~waterLevel~0 0)) (= ~pumpRunning~0 ~switchedOnBeforeTS~0))) (.cse2 (not (= |old(~waterLevel~0)| 2)))) (and (or .cse0 .cse1) (or (not .cse1) .cse2) (or .cse0 .cse3) (or .cse2 (= ~waterLevel~0 1)) (not (= 0 ~systemActive~0))))) [2022-11-23 15:06:29,697 INFO L895 garLoopResultBuilder]: At program point L795-1(lines 776 800) the Hoare annotation is: (let ((.cse6 (= ~pumpRunning~0 0))) (let ((.cse4 (not .cse6)) (.cse5 (not (= |old(~waterLevel~0)| 1))) (.cse7 (= ~pumpRunning~0 ~switchedOnBeforeTS~0))) (let ((.cse0 (= |old(~pumpRunning~0)| 0)) (.cse1 (not (= |old(~waterLevel~0)| 2))) (.cse2 (and .cse4 (or .cse5 (= ~waterLevel~0 0)) .cse7)) (.cse3 (= ~waterLevel~0 1))) (and (or (not .cse0) (= 2 ~waterLevel~0) .cse1) (or .cse2 .cse0) (or .cse0 .cse1 .cse3) (or .cse2 (and (= |timeShift_processEnvironment_~tmp~5#1| 1) .cse4) .cse1) (or .cse2 .cse5 (and .cse6 (= |timeShift_processEnvironment_~tmp~5#1| 0) .cse3 .cse7)) (not (= 0 ~systemActive~0)))))) [2022-11-23 15:06:29,697 INFO L899 garLoopResultBuilder]: For program point L940(lines 940 946) no Hoare annotation was computed. [2022-11-23 15:06:29,697 INFO L895 garLoopResultBuilder]: At program point L755-1(lines 755 761) the Hoare annotation is: (let ((.cse10 (= ~pumpRunning~0 0))) (let ((.cse4 (not .cse10)) (.cse9 (not (= |old(~waterLevel~0)| 1))) (.cse3 (= |old(~pumpRunning~0)| 0)) (.cse8 (= 0 ~systemActive~0)) (.cse11 (= ~pumpRunning~0 ~switchedOnBeforeTS~0))) (let ((.cse2 (and .cse8 .cse11)) (.cse5 (= 2 ~waterLevel~0)) (.cse1 (and .cse3 (not .cse8))) (.cse6 (not (= |old(~waterLevel~0)| 2))) (.cse0 (and .cse4 (or .cse9 (= ~waterLevel~0 0)) .cse11)) (.cse7 (= ~waterLevel~0 1))) (and (or .cse0 .cse1 .cse2) (or (not .cse3) (and .cse4 .cse5) .cse6 .cse2) (or .cse0 (= |timeShift_processEnvironment_~tmp~5#1| 1) .cse6 .cse2) (or (and .cse4 .cse7) (and .cse5 .cse8) .cse1 .cse6) (or .cse0 .cse9 (and .cse10 (= |timeShift_processEnvironment_~tmp~5#1| 0) .cse7 .cse11) (and (or .cse4 .cse7) .cse8)))))) [2022-11-23 15:06:29,698 INFO L895 garLoopResultBuilder]: At program point L784(lines 784 792) the Hoare annotation is: (let ((.cse2 (not (= |old(~waterLevel~0)| 2))) (.cse0 (= ~pumpRunning~0 0)) (.cse1 (= ~pumpRunning~0 ~switchedOnBeforeTS~0))) (and (= |old(~pumpRunning~0)| 0) (or (and .cse0 (= 2 ~waterLevel~0) .cse1) .cse2) (or (= |timeShift_processEnvironment_~tmp~5#1| 1) .cse2) (or (not (= |old(~waterLevel~0)| 1)) (and .cse0 (= |timeShift_processEnvironment_~tmp~5#1| 0) (= ~waterLevel~0 1) .cse1)) (not (= 0 ~systemActive~0)))) [2022-11-23 15:06:29,698 INFO L895 garLoopResultBuilder]: At program point L780(lines 780 797) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0))) (let ((.cse2 (not .cse0)) (.cse4 (= |old(~pumpRunning~0)| 0)) (.cse3 (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) (.cse1 (not (= |old(~waterLevel~0)| 2)))) (and (or .cse0 .cse1 (= ~waterLevel~0 1)) (or (and .cse2 .cse3) .cse4) (or (and (or .cse2 (= |old(~waterLevel~0)| ~waterLevel~0)) (or .cse0 (= ~waterLevel~0 0)) .cse3) (not (= |old(~waterLevel~0)| 1))) (or (not .cse4) (and (= 2 ~waterLevel~0) .cse3) .cse1) (not (= 0 ~systemActive~0))))) [2022-11-23 15:06:29,698 INFO L895 garLoopResultBuilder]: At program point L937(line 937) the Hoare annotation is: (let ((.cse7 (= ~pumpRunning~0 0)) (.cse9 (= ~waterLevel~0 1))) (let ((.cse3 (= 0 ~systemActive~0)) (.cse12 (or (= |old(~waterLevel~0)| ~waterLevel~0) .cse9)) (.cse11 (not .cse7)) (.cse8 (= |timeShift___utac_acc__Specification5_spec__3_~tmp~7#1| ~waterLevel~0)) (.cse6 (not (= |old(~waterLevel~0)| 1))) (.cse10 (= ~pumpRunning~0 ~switchedOnBeforeTS~0))) (let ((.cse0 (= |old(~pumpRunning~0)| 0)) (.cse4 (and .cse11 .cse8 (or .cse6 (= ~waterLevel~0 0)) .cse10)) (.cse1 (and (or .cse11 (= 2 ~waterLevel~0)) .cse3 .cse12)) (.cse2 (not (= |old(~waterLevel~0)| 2))) (.cse5 (and .cse3 .cse10))) (and (or (not .cse0) .cse1 .cse2) (or (and .cse0 (not .cse3)) .cse4 .cse5) (or .cse6 (and .cse7 (= |timeShift_processEnvironment_~tmp~5#1| 0) .cse8 .cse9 .cse10) .cse4 (and (or .cse11 .cse9) .cse3)) (or (and .cse11 .cse12) .cse1 .cse2) (or .cse2 .cse5 .cse9))))) [2022-11-23 15:06:29,699 INFO L899 garLoopResultBuilder]: For program point L937-1(line 937) no Hoare annotation was computed. [2022-11-23 15:06:29,699 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (and (not (= |old(~waterLevel~0)| 1)) (= |old(~pumpRunning~0)| 0) (not (= |old(~waterLevel~0)| 2)) (not (= 0 ~systemActive~0))) [2022-11-23 15:06:29,699 INFO L899 garLoopResultBuilder]: For program point L748-2(lines 744 766) no Hoare annotation was computed. [2022-11-23 15:06:29,699 INFO L895 garLoopResultBuilder]: At program point L922(line 922) the Hoare annotation is: (let ((.cse0 (= |old(~pumpRunning~0)| 0)) (.cse2 (= ~pumpRunning~0 0)) (.cse4 (not (= |old(~waterLevel~0)| 2))) (.cse3 (= |old(~waterLevel~0)| ~waterLevel~0))) (and (or (not (= |old(~waterLevel~0)| 1)) (= ~waterLevel~0 1)) (let ((.cse1 (= 0 ~systemActive~0))) (or (and .cse0 (not .cse1)) (and (or (not .cse2) .cse1) .cse3))) (or (not .cse0) .cse2 .cse4) (or .cse4 .cse3))) [2022-11-23 15:06:29,700 INFO L895 garLoopResultBuilder]: At program point L922-1(line 922) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 |timeShift___utac_acc__Specification5_spec__2_#t~ret49#1|)) (.cse2 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse3 (= |old(~pumpRunning~0)| 0)) (.cse5 (= ~pumpRunning~0 0)) (.cse1 (not (= |old(~waterLevel~0)| 2)))) (and (or (not (= |old(~waterLevel~0)| 1)) (and .cse0 (= ~waterLevel~0 1))) (or .cse1 (and .cse0 .cse2)) (let ((.cse4 (= 0 ~systemActive~0))) (or (and .cse3 (not .cse4)) (and (or (not .cse5) .cse4) .cse0 .cse2))) (or (not .cse3) .cse5 .cse1))) [2022-11-23 15:06:29,700 INFO L895 garLoopResultBuilder]: At program point L790(line 790) the Hoare annotation is: (and (= |old(~pumpRunning~0)| 0) (not (= |old(~waterLevel~0)| 2)) (or (not (= |old(~waterLevel~0)| 1)) (and (= ~pumpRunning~0 0) (= |timeShift_processEnvironment_~tmp~5#1| 0) (= ~waterLevel~0 1) (= ~pumpRunning~0 ~switchedOnBeforeTS~0))) (not (= 0 ~systemActive~0))) [2022-11-23 15:06:29,700 INFO L895 garLoopResultBuilder]: At program point timeShiftENTRY(lines 741 767) the Hoare annotation is: (let ((.cse0 (= |old(~pumpRunning~0)| 0)) (.cse2 (= ~pumpRunning~0 0)) (.cse4 (not (= |old(~waterLevel~0)| 2))) (.cse3 (= |old(~waterLevel~0)| ~waterLevel~0))) (and (or (not (= |old(~waterLevel~0)| 1)) (= ~waterLevel~0 1)) (let ((.cse1 (= 0 ~systemActive~0))) (or (and .cse0 (not .cse1)) (and (or (not .cse2) .cse1) .cse3))) (or (not .cse0) .cse2 .cse4) (or .cse4 .cse3))) [2022-11-23 15:06:29,700 INFO L899 garLoopResultBuilder]: For program point L939(lines 939 949) no Hoare annotation was computed. [2022-11-23 15:06:29,700 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 741 767) no Hoare annotation was computed. [2022-11-23 15:06:29,701 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 54) no Hoare annotation was computed. [2022-11-23 15:06:29,701 INFO L899 garLoopResultBuilder]: For program point L935(lines 935 952) no Hoare annotation was computed. [2022-11-23 15:06:29,701 INFO L895 garLoopResultBuilder]: At program point L935-1(lines 927 955) the Hoare annotation is: (let ((.cse10 (= ~pumpRunning~0 0))) (let ((.cse9 (not .cse10)) (.cse5 (= |timeShift___utac_acc__Specification5_spec__3_~tmp~7#1| ~waterLevel~0)) (.cse4 (not (= |old(~waterLevel~0)| 1)))) (let ((.cse0 (and .cse9 .cse5 (or .cse4 (= ~waterLevel~0 0)))) (.cse1 (= |old(~pumpRunning~0)| 0)) (.cse3 (not (= |old(~waterLevel~0)| 2))) (.cse2 (= 0 ~systemActive~0)) (.cse8 (= ~waterLevel~0 1))) (and (or .cse0 .cse1 .cse2) (or (not .cse1) (= |timeShift___utac_acc__Specification5_spec__3_~tmp~7#1| 2) .cse3 .cse2) (let ((.cse6 (or .cse9 (= 2 ~waterLevel~0))) (.cse7 (or (= |old(~waterLevel~0)| ~waterLevel~0) .cse8))) (or (and .cse4 .cse5 .cse6 .cse7) (and .cse4 .cse6 .cse2 .cse7) .cse3)) (or .cse4 .cse0 (and (<= |timeShift_processEnvironment_~tmp~5#1| 0) (< 0 (+ |timeShift_processEnvironment_~tmp~5#1| 1)) .cse10 .cse5 .cse8) (and (or .cse9 .cse8) .cse2)) (or .cse1 .cse3 .cse2 .cse8))))) [2022-11-23 15:06:29,701 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 61 90) no Hoare annotation was computed. [2022-11-23 15:06:29,702 INFO L902 garLoopResultBuilder]: At program point cleanupENTRY(lines 61 90) the Hoare annotation is: true [2022-11-23 15:06:29,702 INFO L902 garLoopResultBuilder]: At program point L86(lines 61 90) the Hoare annotation is: true [2022-11-23 15:06:29,702 INFO L899 garLoopResultBuilder]: For program point L82(line 82) no Hoare annotation was computed. [2022-11-23 15:06:29,702 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 79) no Hoare annotation was computed. [2022-11-23 15:06:29,702 INFO L902 garLoopResultBuilder]: At program point L75-1(lines 75 79) the Hoare annotation is: true [2022-11-23 15:06:29,702 INFO L902 garLoopResultBuilder]: At program point L71-2(lines 71 85) the Hoare annotation is: true [2022-11-23 15:06:29,703 INFO L902 garLoopResultBuilder]: At program point L67(line 67) the Hoare annotation is: true [2022-11-23 15:06:29,703 INFO L899 garLoopResultBuilder]: For program point L67-1(line 67) no Hoare annotation was computed. [2022-11-23 15:06:29,703 INFO L895 garLoopResultBuilder]: At program point L151(lines 151 158) the Hoare annotation is: (and (or (= ~pumpRunning~0 0) (not (= |old(~waterLevel~0)| 1))) (= |ULTIMATE.start_main_~tmp~0#1| 1) (= ~waterLevel~0 1) (= ~pumpRunning~0 ~switchedOnBeforeTS~0)) [2022-11-23 15:06:29,703 INFO L899 garLoopResultBuilder]: For program point L597(lines 597 603) no Hoare annotation was computed. [2022-11-23 15:06:29,703 INFO L902 garLoopResultBuilder]: At program point L151-2(lines 151 158) the Hoare annotation is: true [2022-11-23 15:06:29,704 INFO L895 garLoopResultBuilder]: At program point L597-1(lines 597 603) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= |ULTIMATE.start_main_~tmp~0#1| 1) .cse0 (= ~waterLevel~0 1)) (and (= 2 ~waterLevel~0) .cse0) (and (not (= ~pumpRunning~0 0)) .cse0) (and .cse0 (= 0 ~systemActive~0)))) [2022-11-23 15:06:29,704 INFO L895 garLoopResultBuilder]: At program point L622(lines 577 624) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= |ULTIMATE.start_main_~tmp~0#1| 1) .cse0 (= ~waterLevel~0 1)) (and (= 2 ~waterLevel~0) .cse0) (and (not (= ~pumpRunning~0 0)) .cse0) (and .cse0 (= 0 ~systemActive~0)))) [2022-11-23 15:06:29,704 INFO L895 garLoopResultBuilder]: At program point L589(line 589) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= 2 ~waterLevel~0) .cse0) (and (not (= ~pumpRunning~0 0)) .cse0) (and .cse0 (= ~waterLevel~0 1)) (and .cse0 (= 0 ~systemActive~0)))) [2022-11-23 15:06:29,704 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-11-23 15:06:29,704 INFO L899 garLoopResultBuilder]: For program point L578(lines 577 624) no Hoare annotation was computed. [2022-11-23 15:06:29,704 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-23 15:06:29,705 INFO L895 garLoopResultBuilder]: At program point L599(line 599) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= |ULTIMATE.start_main_~tmp~0#1| 1) .cse0 (= ~waterLevel~0 1)) (and (= 2 ~waterLevel~0) .cse0) (and (not (= ~pumpRunning~0 0)) .cse0) (and .cse0 (= 0 ~systemActive~0)))) [2022-11-23 15:06:29,705 INFO L902 garLoopResultBuilder]: At program point L628(lines 567 632) the Hoare annotation is: true [2022-11-23 15:06:29,705 INFO L899 garLoopResultBuilder]: For program point L587(lines 587 593) no Hoare annotation was computed. [2022-11-23 15:06:29,705 INFO L899 garLoopResultBuilder]: For program point L587-1(lines 587 593) no Hoare annotation was computed. [2022-11-23 15:06:29,705 INFO L895 garLoopResultBuilder]: At program point L625(lines 576 626) the Hoare annotation is: false [2022-11-23 15:06:29,706 INFO L895 garLoopResultBuilder]: At program point L613-2(lines 607 620) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (or (not (= ~pumpRunning~0 0)) (= 0 ~systemActive~0)) .cse0) (and (= |ULTIMATE.start_main_~tmp~0#1| 1) .cse0 (= ~waterLevel~0 1)) (and (= 2 ~waterLevel~0) .cse0))) [2022-11-23 15:06:29,706 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 653 664) no Hoare annotation was computed. [2022-11-23 15:06:29,706 INFO L895 garLoopResultBuilder]: At program point waterRiseENTRY(lines 653 664) the Hoare annotation is: (let ((.cse0 (= ~waterLevel~0 1)) (.cse1 (= |old(~waterLevel~0)| ~waterLevel~0))) (and (or (not (= |old(~waterLevel~0)| 1)) .cse0) (or (= 2 ~waterLevel~0) (not (= |old(~waterLevel~0)| 2))) (or .cse1 .cse0 (not (= 0 ~systemActive~0))) (or (= ~pumpRunning~0 0) .cse1))) [2022-11-23 15:06:29,706 INFO L899 garLoopResultBuilder]: For program point isPumpRunningEXIT(lines 828 836) no Hoare annotation was computed. [2022-11-23 15:06:29,706 INFO L902 garLoopResultBuilder]: At program point isPumpRunningENTRY(lines 828 836) the Hoare annotation is: true [2022-11-23 15:06:29,710 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:06:29,712 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:06:29,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:06:29 BoogieIcfgContainer [2022-11-23 15:06:29,737 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:06:29,738 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:06:29,738 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:06:29,738 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:06:29,739 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:05:53" (3/4) ... [2022-11-23 15:06:29,742 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 15:06:29,748 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2022-11-23 15:06:29,754 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2022-11-23 15:06:29,754 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2022-11-23 15:06:29,754 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2022-11-23 15:06:29,755 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2022-11-23 15:06:29,755 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isPumpRunning [2022-11-23 15:06:29,765 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 46 nodes and edges [2022-11-23 15:06:29,766 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-23 15:06:29,767 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-23 15:06:29,767 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 15:06:29,768 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 15:06:29,795 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((pumpRunning == 0 || !(\old(waterLevel) == 1)) && tmp == 1) && waterLevel == 1) && pumpRunning == switchedOnBeforeTS [2022-11-23 15:06:29,799 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(\old(waterLevel) == 1) || (pumpRunning == aux-isPumpRunning()-aux && waterLevel == 1)) && (!(\old(waterLevel) == 2) || (pumpRunning == aux-isPumpRunning()-aux && \old(waterLevel) == waterLevel))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || (((!(pumpRunning == 0) || 0 == systemActive) && pumpRunning == aux-isPumpRunning()-aux) && \old(waterLevel) == waterLevel))) && ((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(\old(waterLevel) == 2)) [2022-11-23 15:06:29,800 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((!(pumpRunning == 0) && (!(\old(waterLevel) == 1) || waterLevel == 0)) && pumpRunning == switchedOnBeforeTS) || (\old(pumpRunning) == 0 && !(0 == systemActive))) || (0 == systemActive && pumpRunning == switchedOnBeforeTS)) && (((!(\old(pumpRunning) == 0) || (!(pumpRunning == 0) && 2 == waterLevel)) || !(\old(waterLevel) == 2)) || (0 == systemActive && pumpRunning == switchedOnBeforeTS))) && (((((!(pumpRunning == 0) && (!(\old(waterLevel) == 1) || waterLevel == 0)) && pumpRunning == switchedOnBeforeTS) || tmp == 1) || !(\old(waterLevel) == 2)) || (0 == systemActive && pumpRunning == switchedOnBeforeTS))) && ((((!(pumpRunning == 0) && waterLevel == 1) || (2 == waterLevel && 0 == systemActive)) || (\old(pumpRunning) == 0 && !(0 == systemActive))) || !(\old(waterLevel) == 2))) && (((((!(pumpRunning == 0) && (!(\old(waterLevel) == 1) || waterLevel == 0)) && pumpRunning == switchedOnBeforeTS) || !(\old(waterLevel) == 1)) || (((pumpRunning == 0 && tmp == 0) && waterLevel == 1) && pumpRunning == switchedOnBeforeTS)) || ((!(pumpRunning == 0) || waterLevel == 1) && 0 == systemActive)) [2022-11-23 15:06:29,802 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((!(pumpRunning == 0) && tmp == waterLevel) && (!(\old(waterLevel) == 1) || waterLevel == 0)) || \old(pumpRunning) == 0) || 0 == systemActive) && (((!(\old(pumpRunning) == 0) || tmp == 2) || !(\old(waterLevel) == 2)) || 0 == systemActive)) && (((((!(\old(waterLevel) == 1) && tmp == waterLevel) && (!(pumpRunning == 0) || 2 == waterLevel)) && (\old(waterLevel) == waterLevel || waterLevel == 1)) || (((!(\old(waterLevel) == 1) && (!(pumpRunning == 0) || 2 == waterLevel)) && 0 == systemActive) && (\old(waterLevel) == waterLevel || waterLevel == 1))) || !(\old(waterLevel) == 2))) && (((!(\old(waterLevel) == 1) || ((!(pumpRunning == 0) && tmp == waterLevel) && (!(\old(waterLevel) == 1) || waterLevel == 0))) || ((((tmp <= 0 && 0 < tmp + 1) && pumpRunning == 0) && tmp == waterLevel) && waterLevel == 1)) || ((!(pumpRunning == 0) || waterLevel == 1) && 0 == systemActive))) && (((\old(pumpRunning) == 0 || !(\old(waterLevel) == 2)) || 0 == systemActive) || waterLevel == 1) [2022-11-23 15:06:29,802 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((pumpRunning == 0 || !(\old(waterLevel) == 2)) || waterLevel == 1) && ((!(pumpRunning == 0) && pumpRunning == switchedOnBeforeTS) || \old(pumpRunning) == 0)) && ((((!(pumpRunning == 0) || \old(waterLevel) == waterLevel) && (pumpRunning == 0 || waterLevel == 0)) && pumpRunning == switchedOnBeforeTS) || !(\old(waterLevel) == 1))) && ((!(\old(pumpRunning) == 0) || (2 == waterLevel && pumpRunning == switchedOnBeforeTS)) || !(\old(waterLevel) == 2))) && !(0 == systemActive) [2022-11-23 15:06:29,803 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!(\old(waterLevel) == 1) && \old(pumpRunning) == 0) && !(\old(waterLevel) == 2)) && !(0 == systemActive) [2022-11-23 15:06:29,803 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!(\old(pumpRunning) == 0) || 2 == waterLevel) || !(\old(waterLevel) == 2)) && (((!(pumpRunning == 0) && (!(\old(waterLevel) == 1) || waterLevel == 0)) && pumpRunning == switchedOnBeforeTS) || \old(pumpRunning) == 0)) && ((\old(pumpRunning) == 0 || !(\old(waterLevel) == 2)) || waterLevel == 1)) && ((((!(pumpRunning == 0) && (!(\old(waterLevel) == 1) || waterLevel == 0)) && pumpRunning == switchedOnBeforeTS) || (tmp == 1 && !(pumpRunning == 0))) || !(\old(waterLevel) == 2))) && ((((!(pumpRunning == 0) && (!(\old(waterLevel) == 1) || waterLevel == 0)) && pumpRunning == switchedOnBeforeTS) || !(\old(waterLevel) == 1)) || (((pumpRunning == 0 && tmp == 0) && waterLevel == 1) && pumpRunning == switchedOnBeforeTS))) && !(0 == systemActive) [2022-11-23 15:06:29,804 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((\old(pumpRunning) == 0 && (((pumpRunning == 0 && 2 == waterLevel) && pumpRunning == switchedOnBeforeTS) || !(\old(waterLevel) == 2))) && (tmp == 1 || !(\old(waterLevel) == 2))) && (!(\old(waterLevel) == 1) || (((pumpRunning == 0 && tmp == 0) && waterLevel == 1) && pumpRunning == switchedOnBeforeTS))) && !(0 == systemActive) [2022-11-23 15:06:29,842 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_332db945-8f2e-4803-af85-d058d90964c9/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 15:06:29,843 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:06:29,844 INFO L158 Benchmark]: Toolchain (without parser) took 37941.83ms. Allocated memory was 172.0MB in the beginning and 587.2MB in the end (delta: 415.2MB). Free memory was 138.6MB in the beginning and 421.8MB in the end (delta: -283.2MB). Peak memory consumption was 133.0MB. Max. memory is 16.1GB. [2022-11-23 15:06:29,844 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 113.2MB. Free memory is still 65.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:06:29,845 INFO L158 Benchmark]: CACSL2BoogieTranslator took 504.55ms. Allocated memory is still 172.0MB. Free memory was 138.6MB in the beginning and 119.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-23 15:06:29,845 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.34ms. Allocated memory is still 172.0MB. Free memory was 119.7MB in the beginning and 117.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:06:29,845 INFO L158 Benchmark]: Boogie Preprocessor took 26.99ms. Allocated memory is still 172.0MB. Free memory was 117.6MB in the beginning and 116.7MB in the end (delta: 950.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:06:29,846 INFO L158 Benchmark]: RCFGBuilder took 721.25ms. Allocated memory is still 172.0MB. Free memory was 116.7MB in the beginning and 91.5MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-23 15:06:29,847 INFO L158 Benchmark]: TraceAbstraction took 36513.32ms. Allocated memory was 172.0MB in the beginning and 587.2MB in the end (delta: 415.2MB). Free memory was 91.5MB in the beginning and 427.0MB in the end (delta: -335.5MB). Peak memory consumption was 309.2MB. Max. memory is 16.1GB. [2022-11-23 15:06:29,848 INFO L158 Benchmark]: Witness Printer took 105.69ms. Allocated memory is still 587.2MB. Free memory was 427.0MB in the beginning and 421.8MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 15:06:29,850 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 113.2MB. Free memory is still 65.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 504.55ms. Allocated memory is still 172.0MB. Free memory was 138.6MB in the beginning and 119.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.34ms. Allocated memory is still 172.0MB. Free memory was 119.7MB in the beginning and 117.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.99ms. Allocated memory is still 172.0MB. Free memory was 117.6MB in the beginning and 116.7MB in the end (delta: 950.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 721.25ms. Allocated memory is still 172.0MB. Free memory was 116.7MB in the beginning and 91.5MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 36513.32ms. Allocated memory was 172.0MB in the beginning and 587.2MB in the end (delta: 415.2MB). Free memory was 91.5MB in the beginning and 427.0MB in the end (delta: -335.5MB). Peak memory consumption was 309.2MB. Max. memory is 16.1GB. * Witness Printer took 105.69ms. Allocated memory is still 587.2MB. Free memory was 427.0MB in the beginning and 421.8MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. 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 - PositiveResult [Line: 54]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 36.4s, OverallIterations: 10, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 768 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 749 mSDsluCounter, 1637 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1106 mSDsCounter, 299 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1480 IncrementalHoareTripleChecker+Invalid, 1779 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 299 mSolverCounterUnsat, 531 mSDtfsCounter, 1480 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 443 GetRequests, 294 SyntacticMatches, 4 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1771 ImplicationChecksByTransitivity, 13.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=323occurred in iteration=8, InterpolantAutomatonStates: 85, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 233 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 31 LocationsWithAnnotation, 569 PreInvPairs, 791 NumberOfFragments, 1206 HoareAnnotationTreeSize, 569 FomulaSimplifications, 18876 FormulaSimplificationTreeSizeReduction, 1.0s HoareSimplificationTime, 31 FomulaSimplificationsInter, 25580 FormulaSimplificationTreeSizeReductionInter, 3.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 492 NumberOfCodeBlocks, 492 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 588 ConstructedInterpolants, 0 QuantifiedInterpolants, 1565 SizeOfPredicates, 27 NumberOfNonLiveVariables, 569 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 14 InterpolantComputations, 8 PerfectInterpolantSequences, 206/237 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 927]: Loop Invariant Derived loop invariant: (((((((!(pumpRunning == 0) && tmp == waterLevel) && (!(\old(waterLevel) == 1) || waterLevel == 0)) || \old(pumpRunning) == 0) || 0 == systemActive) && (((!(\old(pumpRunning) == 0) || tmp == 2) || !(\old(waterLevel) == 2)) || 0 == systemActive)) && (((((!(\old(waterLevel) == 1) && tmp == waterLevel) && (!(pumpRunning == 0) || 2 == waterLevel)) && (\old(waterLevel) == waterLevel || waterLevel == 1)) || (((!(\old(waterLevel) == 1) && (!(pumpRunning == 0) || 2 == waterLevel)) && 0 == systemActive) && (\old(waterLevel) == waterLevel || waterLevel == 1))) || !(\old(waterLevel) == 2))) && (((!(\old(waterLevel) == 1) || ((!(pumpRunning == 0) && tmp == waterLevel) && (!(\old(waterLevel) == 1) || waterLevel == 0))) || ((((tmp <= 0 && 0 < tmp + 1) && pumpRunning == 0) && tmp == waterLevel) && waterLevel == 1)) || ((!(pumpRunning == 0) || waterLevel == 1) && 0 == systemActive))) && (((\old(pumpRunning) == 0 || !(\old(waterLevel) == 2)) || 0 == systemActive) || waterLevel == 1) - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: ((!(\old(waterLevel) == 1) && \old(pumpRunning) == 0) && !(\old(waterLevel) == 2)) && !(0 == systemActive) - InvariantResult [Line: 784]: Loop Invariant Derived loop invariant: (((\old(pumpRunning) == 0 && (((pumpRunning == 0 && 2 == waterLevel) && pumpRunning == switchedOnBeforeTS) || !(\old(waterLevel) == 2))) && (tmp == 1 || !(\old(waterLevel) == 2))) && (!(\old(waterLevel) == 1) || (((pumpRunning == 0 && tmp == 0) && waterLevel == 1) && pumpRunning == switchedOnBeforeTS))) && !(0 == systemActive) - InvariantResult [Line: 576]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 776]: Loop Invariant Derived loop invariant: ((((((!(\old(pumpRunning) == 0) || 2 == waterLevel) || !(\old(waterLevel) == 2)) && (((!(pumpRunning == 0) && (!(\old(waterLevel) == 1) || waterLevel == 0)) && pumpRunning == switchedOnBeforeTS) || \old(pumpRunning) == 0)) && ((\old(pumpRunning) == 0 || !(\old(waterLevel) == 2)) || waterLevel == 1)) && ((((!(pumpRunning == 0) && (!(\old(waterLevel) == 1) || waterLevel == 0)) && pumpRunning == switchedOnBeforeTS) || (tmp == 1 && !(pumpRunning == 0))) || !(\old(waterLevel) == 2))) && ((((!(pumpRunning == 0) && (!(\old(waterLevel) == 1) || waterLevel == 0)) && pumpRunning == switchedOnBeforeTS) || !(\old(waterLevel) == 1)) || (((pumpRunning == 0 && tmp == 0) && waterLevel == 1) && pumpRunning == switchedOnBeforeTS))) && !(0 == systemActive) - InvariantResult [Line: 151]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 780]: Loop Invariant Derived loop invariant: (((((pumpRunning == 0 || !(\old(waterLevel) == 2)) || waterLevel == 1) && ((!(pumpRunning == 0) && pumpRunning == switchedOnBeforeTS) || \old(pumpRunning) == 0)) && ((((!(pumpRunning == 0) || \old(waterLevel) == waterLevel) && (pumpRunning == 0 || waterLevel == 0)) && pumpRunning == switchedOnBeforeTS) || !(\old(waterLevel) == 1))) && ((!(\old(pumpRunning) == 0) || (2 == waterLevel && pumpRunning == switchedOnBeforeTS)) || !(\old(waterLevel) == 2))) && !(0 == systemActive) - InvariantResult [Line: 71]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 577]: Loop Invariant Derived loop invariant: ((((tmp == 1 && splverifierCounter == 0) && waterLevel == 1) || (2 == waterLevel && splverifierCounter == 0)) || (!(pumpRunning == 0) && splverifierCounter == 0)) || (splverifierCounter == 0 && 0 == systemActive) - InvariantResult [Line: 922]: Loop Invariant Derived loop invariant: (((!(\old(waterLevel) == 1) || (pumpRunning == aux-isPumpRunning()-aux && waterLevel == 1)) && (!(\old(waterLevel) == 2) || (pumpRunning == aux-isPumpRunning()-aux && \old(waterLevel) == waterLevel))) && ((\old(pumpRunning) == 0 && !(0 == systemActive)) || (((!(pumpRunning == 0) || 0 == systemActive) && pumpRunning == aux-isPumpRunning()-aux) && \old(waterLevel) == waterLevel))) && ((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(\old(waterLevel) == 2)) - InvariantResult [Line: 597]: Loop Invariant Derived loop invariant: ((((tmp == 1 && splverifierCounter == 0) && waterLevel == 1) || (2 == waterLevel && splverifierCounter == 0)) || (!(pumpRunning == 0) && splverifierCounter == 0)) || (splverifierCounter == 0 && 0 == systemActive) - InvariantResult [Line: 151]: Loop Invariant Derived loop invariant: (((pumpRunning == 0 || !(\old(waterLevel) == 1)) && tmp == 1) && waterLevel == 1) && pumpRunning == switchedOnBeforeTS - InvariantResult [Line: 567]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 755]: Loop Invariant Derived loop invariant: (((((((!(pumpRunning == 0) && (!(\old(waterLevel) == 1) || waterLevel == 0)) && pumpRunning == switchedOnBeforeTS) || (\old(pumpRunning) == 0 && !(0 == systemActive))) || (0 == systemActive && pumpRunning == switchedOnBeforeTS)) && (((!(\old(pumpRunning) == 0) || (!(pumpRunning == 0) && 2 == waterLevel)) || !(\old(waterLevel) == 2)) || (0 == systemActive && pumpRunning == switchedOnBeforeTS))) && (((((!(pumpRunning == 0) && (!(\old(waterLevel) == 1) || waterLevel == 0)) && pumpRunning == switchedOnBeforeTS) || tmp == 1) || !(\old(waterLevel) == 2)) || (0 == systemActive && pumpRunning == switchedOnBeforeTS))) && ((((!(pumpRunning == 0) && waterLevel == 1) || (2 == waterLevel && 0 == systemActive)) || (\old(pumpRunning) == 0 && !(0 == systemActive))) || !(\old(waterLevel) == 2))) && (((((!(pumpRunning == 0) && (!(\old(waterLevel) == 1) || waterLevel == 0)) && pumpRunning == switchedOnBeforeTS) || !(\old(waterLevel) == 1)) || (((pumpRunning == 0 && tmp == 0) && waterLevel == 1) && pumpRunning == switchedOnBeforeTS)) || ((!(pumpRunning == 0) || waterLevel == 1) && 0 == systemActive)) - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-23 15:06:29,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_332db945-8f2e-4803-af85-d058d90964c9/bin/utaipan-Q6hlc19bkW/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 Result: TRUE