./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product48.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42109e51-e8b6-461f-b547-770d23e39b08/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42109e51-e8b6-461f-b547-770d23e39b08/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_42109e51-e8b6-461f-b547-770d23e39b08/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42109e51-e8b6-461f-b547-770d23e39b08/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product48.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42109e51-e8b6-461f-b547-770d23e39b08/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_42109e51-e8b6-461f-b547-770d23e39b08/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 797436b26f0180d1dd4048b2036765c1f76ffc9f34d72e35837e9efcc5780486 --- 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 13:46:00,010 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 13:46:00,012 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 13:46:00,040 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 13:46:00,040 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 13:46:00,041 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 13:46:00,054 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 13:46:00,056 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 13:46:00,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 13:46:00,058 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 13:46:00,059 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 13:46:00,060 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 13:46:00,061 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 13:46:00,062 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 13:46:00,063 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 13:46:00,064 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 13:46:00,065 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 13:46:00,066 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 13:46:00,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 13:46:00,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 13:46:00,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 13:46:00,090 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 13:46:00,091 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 13:46:00,092 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 13:46:00,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 13:46:00,095 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 13:46:00,096 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 13:46:00,096 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 13:46:00,097 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 13:46:00,098 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 13:46:00,098 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 13:46:00,104 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 13:46:00,106 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 13:46:00,107 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 13:46:00,108 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 13:46:00,108 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 13:46:00,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 13:46:00,111 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 13:46:00,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 13:46:00,115 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 13:46:00,115 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 13:46:00,116 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42109e51-e8b6-461f-b547-770d23e39b08/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 13:46:00,157 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 13:46:00,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 13:46:00,158 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 13:46:00,158 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 13:46:00,159 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 13:46:00,159 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 13:46:00,159 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 13:46:00,160 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 13:46:00,160 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 13:46:00,160 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 13:46:00,172 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 13:46:00,172 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 13:46:00,173 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 13:46:00,173 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 13:46:00,173 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 13:46:00,173 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 13:46:00,173 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 13:46:00,174 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 13:46:00,174 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 13:46:00,175 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 13:46:00,175 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 13:46:00,175 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 13:46:00,175 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 13:46:00,175 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 13:46:00,176 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 13:46:00,176 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 13:46:00,176 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 13:46:00,176 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 13:46:00,176 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 13:46:00,177 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 13:46:00,177 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 13:46:00,177 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 13:46:00,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:46:00,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 13:46:00,178 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 13:46:00,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 13:46:00,178 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 13:46:00,179 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 13:46:00,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 13:46:00,179 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 13:46:00,179 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 13:46:00,180 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_42109e51-e8b6-461f-b547-770d23e39b08/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42109e51-e8b6-461f-b547-770d23e39b08/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 797436b26f0180d1dd4048b2036765c1f76ffc9f34d72e35837e9efcc5780486 [2022-11-23 13:46:00,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 13:46:00,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 13:46:00,474 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 13:46:00,476 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 13:46:00,476 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 13:46:00,478 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42109e51-e8b6-461f-b547-770d23e39b08/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/product-lines/minepump_spec2_product48.cil.c [2022-11-23 13:46:03,596 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 13:46:03,861 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 13:46:03,861 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42109e51-e8b6-461f-b547-770d23e39b08/sv-benchmarks/c/product-lines/minepump_spec2_product48.cil.c [2022-11-23 13:46:03,896 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42109e51-e8b6-461f-b547-770d23e39b08/bin/utaipan-Q6hlc19bkW/data/4f684923b/83b321ba847d4ad795b656f1d616dc59/FLAGfae115efd [2022-11-23 13:46:03,916 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42109e51-e8b6-461f-b547-770d23e39b08/bin/utaipan-Q6hlc19bkW/data/4f684923b/83b321ba847d4ad795b656f1d616dc59 [2022-11-23 13:46:03,919 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 13:46:03,921 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 13:46:03,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 13:46:03,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 13:46:03,931 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 13:46:03,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:46:03" (1/1) ... [2022-11-23 13:46:03,933 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ff5dcc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:03, skipping insertion in model container [2022-11-23 13:46:03,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:46:03" (1/1) ... [2022-11-23 13:46:03,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 13:46:04,010 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 13:46:04,286 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_42109e51-e8b6-461f-b547-770d23e39b08/sv-benchmarks/c/product-lines/minepump_spec2_product48.cil.c[17766,17779] [2022-11-23 13:46:04,295 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:46:04,308 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 13:46:04,405 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_42109e51-e8b6-461f-b547-770d23e39b08/sv-benchmarks/c/product-lines/minepump_spec2_product48.cil.c[17766,17779] [2022-11-23 13:46:04,409 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 13:46:04,429 INFO L208 MainTranslator]: Completed translation [2022-11-23 13:46:04,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:04 WrapperNode [2022-11-23 13:46:04,429 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 13:46:04,431 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 13:46:04,431 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 13:46:04,431 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 13:46:04,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:04" (1/1) ... [2022-11-23 13:46:04,453 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:04" (1/1) ... [2022-11-23 13:46:04,479 INFO L138 Inliner]: procedures = 57, calls = 103, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 196 [2022-11-23 13:46:04,479 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 13:46:04,480 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 13:46:04,480 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 13:46:04,480 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 13:46:04,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:04" (1/1) ... [2022-11-23 13:46:04,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:04" (1/1) ... [2022-11-23 13:46:04,493 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:04" (1/1) ... [2022-11-23 13:46:04,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:04" (1/1) ... [2022-11-23 13:46:04,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:04" (1/1) ... [2022-11-23 13:46:04,504 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:04" (1/1) ... [2022-11-23 13:46:04,506 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:04" (1/1) ... [2022-11-23 13:46:04,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:04" (1/1) ... [2022-11-23 13:46:04,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 13:46:04,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 13:46:04,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 13:46:04,511 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 13:46:04,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:04" (1/1) ... [2022-11-23 13:46:04,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 13:46:04,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42109e51-e8b6-461f-b547-770d23e39b08/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:46:04,552 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42109e51-e8b6-461f-b547-770d23e39b08/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 13:46:04,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42109e51-e8b6-461f-b547-770d23e39b08/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 13:46:04,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 13:46:04,608 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-23 13:46:04,608 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-23 13:46:04,609 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-23 13:46:04,609 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-23 13:46:04,609 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-23 13:46:04,609 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-23 13:46:04,609 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2022-11-23 13:46:04,609 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2022-11-23 13:46:04,610 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-23 13:46:04,610 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-23 13:46:04,610 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2022-11-23 13:46:04,610 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2022-11-23 13:46:04,610 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2022-11-23 13:46:04,611 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2022-11-23 13:46:04,611 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2022-11-23 13:46:04,611 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2022-11-23 13:46:04,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 13:46:04,611 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-23 13:46:04,611 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-23 13:46:04,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 13:46:04,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 13:46:04,733 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 13:46:04,736 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 13:46:05,167 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 13:46:05,292 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 13:46:05,292 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 13:46:05,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:46:05 BoogieIcfgContainer [2022-11-23 13:46:05,295 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 13:46:05,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 13:46:05,306 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 13:46:05,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 13:46:05,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:46:03" (1/3) ... [2022-11-23 13:46:05,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d4fd391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:46:05, skipping insertion in model container [2022-11-23 13:46:05,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:46:04" (2/3) ... [2022-11-23 13:46:05,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d4fd391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:46:05, skipping insertion in model container [2022-11-23 13:46:05,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:46:05" (3/3) ... [2022-11-23 13:46:05,321 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product48.cil.c [2022-11-23 13:46:05,345 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 13:46:05,345 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 13:46:05,406 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 13:46:05,413 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;@5a14605a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 13:46:05,413 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 13:46:05,418 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 54 states have internal predecessors, (64), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-23 13:46:05,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-23 13:46:05,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:46:05,432 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:46:05,433 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:46:05,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:46:05,440 INFO L85 PathProgramCache]: Analyzing trace with hash -630994243, now seen corresponding path program 1 times [2022-11-23 13:46:05,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:46:05,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086165782] [2022-11-23 13:46:05,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:46:05,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:46:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:46:05,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:46:05,717 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:46:05,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086165782] [2022-11-23 13:46:05,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086165782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:46:05,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:46:05,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 13:46:05,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089924632] [2022-11-23 13:46:05,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:46:05,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 13:46:05,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:46:05,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 13:46:05,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 13:46:05,758 INFO L87 Difference]: Start difference. First operand has 72 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 54 states have internal predecessors, (64), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 13:46:05,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:46:05,847 INFO L93 Difference]: Finished difference Result 142 states and 193 transitions. [2022-11-23 13:46:05,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 13:46:05,853 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-23 13:46:05,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:46:05,867 INFO L225 Difference]: With dead ends: 142 [2022-11-23 13:46:05,867 INFO L226 Difference]: Without dead ends: 67 [2022-11-23 13:46:05,872 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 13:46:05,877 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 13:46:05,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 75 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 13:46:05,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-23 13:46:05,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-11-23 13:46:05,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 50 states have internal predecessors, (56), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-23 13:46:05,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 87 transitions. [2022-11-23 13:46:05,936 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 87 transitions. Word has length 17 [2022-11-23 13:46:05,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:46:05,936 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 87 transitions. [2022-11-23 13:46:05,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 13:46:05,937 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 87 transitions. [2022-11-23 13:46:05,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-23 13:46:05,939 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:46:05,940 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:46:05,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 13:46:05,940 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:46:05,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:46:05,941 INFO L85 PathProgramCache]: Analyzing trace with hash -763607885, now seen corresponding path program 1 times [2022-11-23 13:46:05,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:46:05,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312773745] [2022-11-23 13:46:05,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:46:05,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:46:05,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:46:06,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:46:06,131 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:46:06,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312773745] [2022-11-23 13:46:06,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312773745] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:46:06,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:46:06,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:46:06,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185957586] [2022-11-23 13:46:06,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:46:06,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:46:06,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:46:06,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:46:06,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:46:06,143 INFO L87 Difference]: Start difference. First operand 67 states and 87 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 13:46:06,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:46:06,236 INFO L93 Difference]: Finished difference Result 106 states and 136 transitions. [2022-11-23 13:46:06,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:46:06,237 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-11-23 13:46:06,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:46:06,238 INFO L225 Difference]: With dead ends: 106 [2022-11-23 13:46:06,238 INFO L226 Difference]: Without dead ends: 59 [2022-11-23 13:46:06,239 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 13:46:06,240 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 14 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:46:06,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 106 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:46:06,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-23 13:46:06,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-11-23 13:46:06,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 45 states have internal predecessors, (50), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-23 13:46:06,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 76 transitions. [2022-11-23 13:46:06,251 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 76 transitions. Word has length 18 [2022-11-23 13:46:06,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:46:06,251 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 76 transitions. [2022-11-23 13:46:06,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 13:46:06,252 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 76 transitions. [2022-11-23 13:46:06,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-23 13:46:06,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:46:06,253 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:46:06,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 13:46:06,254 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:46:06,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:46:06,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1416995417, now seen corresponding path program 1 times [2022-11-23 13:46:06,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:46:06,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674518607] [2022-11-23 13:46:06,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:46:06,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:46:06,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:46:06,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:46:06,346 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:46:06,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674518607] [2022-11-23 13:46:06,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674518607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:46:06,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:46:06,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:46:06,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363512747] [2022-11-23 13:46:06,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:46:06,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:46:06,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:46:06,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:46:06,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:46:06,350 INFO L87 Difference]: Start difference. First operand 59 states and 76 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 13:46:06,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:46:06,482 INFO L93 Difference]: Finished difference Result 173 states and 225 transitions. [2022-11-23 13:46:06,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:46:06,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2022-11-23 13:46:06,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:46:06,487 INFO L225 Difference]: With dead ends: 173 [2022-11-23 13:46:06,490 INFO L226 Difference]: Without dead ends: 116 [2022-11-23 13:46:06,491 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 13:46:06,494 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 70 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:46:06,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 141 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:46:06,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-23 13:46:06,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 113. [2022-11-23 13:46:06,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 70 states have (on average 1.3571428571428572) internal successors, (95), 85 states have internal predecessors, (95), 26 states have call successors, (26), 16 states have call predecessors, (26), 16 states have return successors, (26), 19 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-23 13:46:06,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 147 transitions. [2022-11-23 13:46:06,539 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 147 transitions. Word has length 21 [2022-11-23 13:46:06,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:46:06,539 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 147 transitions. [2022-11-23 13:46:06,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 13:46:06,540 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 147 transitions. [2022-11-23 13:46:06,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-23 13:46:06,541 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:46:06,541 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:46:06,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 13:46:06,542 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:46:06,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:46:06,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1960403323, now seen corresponding path program 1 times [2022-11-23 13:46:06,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:46:06,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98006895] [2022-11-23 13:46:06,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:46:06,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:46:06,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:46:06,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 13:46:06,640 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:46:06,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98006895] [2022-11-23 13:46:06,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98006895] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:46:06,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:46:06,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 13:46:06,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685165749] [2022-11-23 13:46:06,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:46:06,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 13:46:06,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:46:06,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 13:46:06,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 13:46:06,643 INFO L87 Difference]: Start difference. First operand 113 states and 147 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 13:46:06,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:46:06,737 INFO L93 Difference]: Finished difference Result 224 states and 296 transitions. [2022-11-23 13:46:06,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 13:46:06,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2022-11-23 13:46:06,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:46:06,741 INFO L225 Difference]: With dead ends: 224 [2022-11-23 13:46:06,742 INFO L226 Difference]: Without dead ends: 222 [2022-11-23 13:46:06,742 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 13:46:06,744 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 52 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:46:06,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 131 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:46:06,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-11-23 13:46:06,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2022-11-23 13:46:06,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 137 states have (on average 1.3503649635036497) internal successors, (185), 166 states have internal predecessors, (185), 52 states have call successors, (52), 32 states have call predecessors, (52), 32 states have return successors, (56), 38 states have call predecessors, (56), 52 states have call successors, (56) [2022-11-23 13:46:06,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 293 transitions. [2022-11-23 13:46:06,778 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 293 transitions. Word has length 24 [2022-11-23 13:46:06,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:46:06,779 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 293 transitions. [2022-11-23 13:46:06,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 13:46:06,779 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 293 transitions. [2022-11-23 13:46:06,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-23 13:46:06,782 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:46:06,782 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:46:06,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 13:46:06,783 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:46:06,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:46:06,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1420251038, now seen corresponding path program 1 times [2022-11-23 13:46:06,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:46:06,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141468180] [2022-11-23 13:46:06,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:46:06,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:46:06,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:46:07,146 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 13:46:07,146 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:46:07,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141468180] [2022-11-23 13:46:07,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141468180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:46:07,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:46:07,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 13:46:07,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300386346] [2022-11-23 13:46:07,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:46:07,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 13:46:07,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:46:07,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 13:46:07,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 13:46:07,149 INFO L87 Difference]: Start difference. First operand 222 states and 293 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 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 13:46:07,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:46:07,568 INFO L93 Difference]: Finished difference Result 716 states and 972 transitions. [2022-11-23 13:46:07,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 13:46:07,569 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 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 45 [2022-11-23 13:46:07,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:46:07,582 INFO L225 Difference]: With dead ends: 716 [2022-11-23 13:46:07,582 INFO L226 Difference]: Without dead ends: 496 [2022-11-23 13:46:07,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-23 13:46:07,586 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 117 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 13:46:07,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 208 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 13:46:07,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2022-11-23 13:46:07,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 458. [2022-11-23 13:46:07,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 301 states have (on average 1.2724252491694352) internal successors, (383), 330 states have internal predecessors, (383), 80 states have call successors, (80), 66 states have call predecessors, (80), 76 states have return successors, (116), 80 states have call predecessors, (116), 80 states have call successors, (116) [2022-11-23 13:46:07,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 579 transitions. [2022-11-23 13:46:07,663 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 579 transitions. Word has length 45 [2022-11-23 13:46:07,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:46:07,663 INFO L495 AbstractCegarLoop]: Abstraction has 458 states and 579 transitions. [2022-11-23 13:46:07,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 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 13:46:07,664 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 579 transitions. [2022-11-23 13:46:07,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-23 13:46:07,667 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:46:07,667 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:46:07,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 13:46:07,667 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:46:07,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:46:07,668 INFO L85 PathProgramCache]: Analyzing trace with hash -108939152, now seen corresponding path program 1 times [2022-11-23 13:46:07,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:46:07,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221120991] [2022-11-23 13:46:07,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:46:07,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:46:07,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:46:07,727 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 13:46:07,727 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:46:07,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221120991] [2022-11-23 13:46:07,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221120991] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:46:07,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 13:46:07,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 13:46:07,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836022173] [2022-11-23 13:46:07,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:46:07,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 13:46:07,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:46:07,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 13:46:07,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 13:46:07,732 INFO L87 Difference]: Start difference. First operand 458 states and 579 transitions. Second operand has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-23 13:46:07,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:46:07,887 INFO L93 Difference]: Finished difference Result 726 states and 919 transitions. [2022-11-23 13:46:07,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 13:46:07,888 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) Word has length 61 [2022-11-23 13:46:07,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:46:07,891 INFO L225 Difference]: With dead ends: 726 [2022-11-23 13:46:07,891 INFO L226 Difference]: Without dead ends: 270 [2022-11-23 13:46:07,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 13:46:07,898 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 92 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:46:07,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 130 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:46:07,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-11-23 13:46:07,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 255. [2022-11-23 13:46:07,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 169 states have (on average 1.2603550295857988) internal successors, (213), 185 states have internal predecessors, (213), 43 states have call successors, (43), 37 states have call predecessors, (43), 42 states have return successors, (61), 44 states have call predecessors, (61), 43 states have call successors, (61) [2022-11-23 13:46:07,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 317 transitions. [2022-11-23 13:46:07,950 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 317 transitions. Word has length 61 [2022-11-23 13:46:07,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:46:07,951 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 317 transitions. [2022-11-23 13:46:07,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 4 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-23 13:46:07,951 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 317 transitions. [2022-11-23 13:46:07,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-23 13:46:07,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:46:07,953 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:46:07,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 13:46:07,954 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:46:07,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:46:07,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1159973885, now seen corresponding path program 1 times [2022-11-23 13:46:07,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:46:07,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025802271] [2022-11-23 13:46:07,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:46:07,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:46:07,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:46:08,402 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 13:46:08,403 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:46:08,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025802271] [2022-11-23 13:46:08,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025802271] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:46:08,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347764398] [2022-11-23 13:46:08,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:46:08,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:46:08,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42109e51-e8b6-461f-b547-770d23e39b08/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:46:08,413 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42109e51-e8b6-461f-b547-770d23e39b08/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:46:08,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42109e51-e8b6-461f-b547-770d23e39b08/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 13:46:08,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:46:08,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-23 13:46:08,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:46:09,139 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 13:46:09,139 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:46:09,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347764398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:46:09,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 13:46:09,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 19 [2022-11-23 13:46:09,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988207220] [2022-11-23 13:46:09,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:46:09,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 13:46:09,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:46:09,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 13:46:09,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-11-23 13:46:09,144 INFO L87 Difference]: Start difference. First operand 255 states and 317 transitions. Second operand has 10 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 5 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2022-11-23 13:46:09,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:46:09,992 INFO L93 Difference]: Finished difference Result 609 states and 767 transitions. [2022-11-23 13:46:09,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-23 13:46:09,993 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 5 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) Word has length 71 [2022-11-23 13:46:09,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:46:09,996 INFO L225 Difference]: With dead ends: 609 [2022-11-23 13:46:09,996 INFO L226 Difference]: Without dead ends: 356 [2022-11-23 13:46:09,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=108, Invalid=542, Unknown=0, NotChecked=0, Total=650 [2022-11-23 13:46:09,999 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 178 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 13:46:09,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 423 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 13:46:10,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-23 13:46:10,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 302. [2022-11-23 13:46:10,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 204 states have (on average 1.2598039215686274) internal successors, (257), 221 states have internal predecessors, (257), 48 states have call successors, (48), 46 states have call predecessors, (48), 49 states have return successors, (66), 48 states have call predecessors, (66), 48 states have call successors, (66) [2022-11-23 13:46:10,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 371 transitions. [2022-11-23 13:46:10,065 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 371 transitions. Word has length 71 [2022-11-23 13:46:10,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:46:10,065 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 371 transitions. [2022-11-23 13:46:10,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 5 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2022-11-23 13:46:10,066 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 371 transitions. [2022-11-23 13:46:10,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-23 13:46:10,068 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:46:10,068 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:46:10,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42109e51-e8b6-461f-b547-770d23e39b08/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 13:46:10,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42109e51-e8b6-461f-b547-770d23e39b08/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-23 13:46:10,276 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:46:10,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:46:10,277 INFO L85 PathProgramCache]: Analyzing trace with hash -93828570, now seen corresponding path program 1 times [2022-11-23 13:46:10,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:46:10,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806873630] [2022-11-23 13:46:10,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:46:10,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:46:10,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:46:10,570 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 13:46:10,570 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:46:10,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806873630] [2022-11-23 13:46:10,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806873630] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:46:10,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992991879] [2022-11-23 13:46:10,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:46:10,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:46:10,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42109e51-e8b6-461f-b547-770d23e39b08/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:46:10,572 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42109e51-e8b6-461f-b547-770d23e39b08/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:46:10,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42109e51-e8b6-461f-b547-770d23e39b08/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 13:46:10,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:46:10,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-23 13:46:10,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:46:10,726 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-23 13:46:10,727 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:46:10,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992991879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:46:10,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 13:46:10,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 12 [2022-11-23 13:46:10,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560024244] [2022-11-23 13:46:10,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:46:10,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 13:46:10,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:46:10,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 13:46:10,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-11-23 13:46:10,730 INFO L87 Difference]: Start difference. First operand 302 states and 371 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-23 13:46:10,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:46:10,826 INFO L93 Difference]: Finished difference Result 592 states and 730 transitions. [2022-11-23 13:46:10,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 13:46:10,826 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 74 [2022-11-23 13:46:10,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:46:10,829 INFO L225 Difference]: With dead ends: 592 [2022-11-23 13:46:10,829 INFO L226 Difference]: Without dead ends: 292 [2022-11-23 13:46:10,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-11-23 13:46:10,832 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 52 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 13:46:10,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 177 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 13:46:10,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-11-23 13:46:10,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 269. [2022-11-23 13:46:10,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 181 states have (on average 1.2486187845303867) internal successors, (226), 196 states have internal predecessors, (226), 43 states have call successors, (43), 41 states have call predecessors, (43), 44 states have return successors, (57), 43 states have call predecessors, (57), 43 states have call successors, (57) [2022-11-23 13:46:10,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 326 transitions. [2022-11-23 13:46:10,894 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 326 transitions. Word has length 74 [2022-11-23 13:46:10,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:46:10,897 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 326 transitions. [2022-11-23 13:46:10,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-23 13:46:10,897 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 326 transitions. [2022-11-23 13:46:10,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-23 13:46:10,900 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:46:10,900 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:46:10,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42109e51-e8b6-461f-b547-770d23e39b08/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 13:46:11,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42109e51-e8b6-461f-b547-770d23e39b08/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:46:11,107 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:46:11,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:46:11,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1619168885, now seen corresponding path program 1 times [2022-11-23 13:46:11,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:46:11,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692471316] [2022-11-23 13:46:11,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:46:11,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:46:11,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:46:11,548 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 13:46:11,549 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:46:11,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692471316] [2022-11-23 13:46:11,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692471316] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:46:11,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867472462] [2022-11-23 13:46:11,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:46:11,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:46:11,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42109e51-e8b6-461f-b547-770d23e39b08/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:46:11,551 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42109e51-e8b6-461f-b547-770d23e39b08/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:46:11,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42109e51-e8b6-461f-b547-770d23e39b08/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 13:46:11,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:46:11,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-23 13:46:11,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:46:11,729 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 13:46:11,729 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:46:11,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867472462] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:46:11,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 13:46:11,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-11-23 13:46:11,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97712102] [2022-11-23 13:46:11,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:46:11,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 13:46:11,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:46:11,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 13:46:11,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-11-23 13:46:11,732 INFO L87 Difference]: Start difference. First operand 269 states and 326 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-23 13:46:11,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:46:11,877 INFO L93 Difference]: Finished difference Result 537 states and 667 transitions. [2022-11-23 13:46:11,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 13:46:11,878 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 76 [2022-11-23 13:46:11,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:46:11,884 INFO L225 Difference]: With dead ends: 537 [2022-11-23 13:46:11,884 INFO L226 Difference]: Without dead ends: 270 [2022-11-23 13:46:11,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-11-23 13:46:11,888 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 46 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:46:11,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 194 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:46:11,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-11-23 13:46:11,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 260. [2022-11-23 13:46:11,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 178 states have (on average 1.2359550561797752) internal successors, (220), 193 states have internal predecessors, (220), 41 states have call successors, (41), 39 states have call predecessors, (41), 40 states have return successors, (53), 41 states have call predecessors, (53), 41 states have call successors, (53) [2022-11-23 13:46:11,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 314 transitions. [2022-11-23 13:46:11,941 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 314 transitions. Word has length 76 [2022-11-23 13:46:11,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:46:11,942 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 314 transitions. [2022-11-23 13:46:11,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-23 13:46:11,942 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 314 transitions. [2022-11-23 13:46:11,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-23 13:46:11,944 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:46:11,944 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:46:11,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42109e51-e8b6-461f-b547-770d23e39b08/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 13:46:12,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42109e51-e8b6-461f-b547-770d23e39b08/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:46:12,151 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:46:12,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:46:12,152 INFO L85 PathProgramCache]: Analyzing trace with hash -63071661, now seen corresponding path program 1 times [2022-11-23 13:46:12,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:46:12,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587177695] [2022-11-23 13:46:12,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:46:12,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:46:12,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:46:12,470 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 13:46:12,470 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:46:12,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587177695] [2022-11-23 13:46:12,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587177695] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:46:12,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292986170] [2022-11-23 13:46:12,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:46:12,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:46:12,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42109e51-e8b6-461f-b547-770d23e39b08/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:46:12,473 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42109e51-e8b6-461f-b547-770d23e39b08/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:46:12,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42109e51-e8b6-461f-b547-770d23e39b08/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 13:46:12,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:46:12,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-23 13:46:12,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:46:12,741 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-23 13:46:12,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 13:46:12,900 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-23 13:46:12,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292986170] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-23 13:46:12,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-23 13:46:12,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 5] total 16 [2022-11-23 13:46:12,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483716907] [2022-11-23 13:46:12,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:46:12,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 13:46:12,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:46:12,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 13:46:12,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-11-23 13:46:12,903 INFO L87 Difference]: Start difference. First operand 260 states and 314 transitions. Second operand has 6 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-23 13:46:13,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:46:13,119 INFO L93 Difference]: Finished difference Result 730 states and 897 transitions. [2022-11-23 13:46:13,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 13:46:13,120 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 79 [2022-11-23 13:46:13,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:46:13,124 INFO L225 Difference]: With dead ends: 730 [2022-11-23 13:46:13,124 INFO L226 Difference]: Without dead ends: 472 [2022-11-23 13:46:13,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 160 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-11-23 13:46:13,126 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 47 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 13:46:13,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 315 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 13:46:13,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2022-11-23 13:46:13,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 444. [2022-11-23 13:46:13,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 309 states have (on average 1.226537216828479) internal successors, (379), 329 states have internal predecessors, (379), 68 states have call successors, (68), 65 states have call predecessors, (68), 66 states have return successors, (86), 68 states have call predecessors, (86), 68 states have call successors, (86) [2022-11-23 13:46:13,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 533 transitions. [2022-11-23 13:46:13,204 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 533 transitions. Word has length 79 [2022-11-23 13:46:13,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:46:13,204 INFO L495 AbstractCegarLoop]: Abstraction has 444 states and 533 transitions. [2022-11-23 13:46:13,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-23 13:46:13,205 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 533 transitions. [2022-11-23 13:46:13,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-23 13:46:13,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:46:13,210 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:46:13,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42109e51-e8b6-461f-b547-770d23e39b08/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 13:46:13,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42109e51-e8b6-461f-b547-770d23e39b08/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-23 13:46:13,415 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:46:13,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:46:13,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1462069256, now seen corresponding path program 1 times [2022-11-23 13:46:13,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:46:13,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488471596] [2022-11-23 13:46:13,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:46:13,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:46:13,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:46:13,706 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 13:46:13,707 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:46:13,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488471596] [2022-11-23 13:46:13,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488471596] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:46:13,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656742683] [2022-11-23 13:46:13,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:46:13,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:46:13,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42109e51-e8b6-461f-b547-770d23e39b08/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:46:13,709 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42109e51-e8b6-461f-b547-770d23e39b08/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:46:13,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42109e51-e8b6-461f-b547-770d23e39b08/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 13:46:13,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:46:13,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-23 13:46:13,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:46:14,006 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 13:46:14,007 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:46:14,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656742683] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:46:14,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 13:46:14,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 19 [2022-11-23 13:46:14,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719596727] [2022-11-23 13:46:14,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:46:14,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 13:46:14,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:46:14,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 13:46:14,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2022-11-23 13:46:14,011 INFO L87 Difference]: Start difference. First operand 444 states and 533 transitions. Second operand has 11 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 3 states have call successors, (13), 3 states have call predecessors, (13), 6 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-23 13:46:14,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:46:14,439 INFO L93 Difference]: Finished difference Result 882 states and 1092 transitions. [2022-11-23 13:46:14,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-23 13:46:14,440 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 3 states have call successors, (13), 3 states have call predecessors, (13), 6 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) Word has length 82 [2022-11-23 13:46:14,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:46:14,443 INFO L225 Difference]: With dead ends: 882 [2022-11-23 13:46:14,443 INFO L226 Difference]: Without dead ends: 624 [2022-11-23 13:46:14,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2022-11-23 13:46:14,445 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 56 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 13:46:14,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 695 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 13:46:14,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2022-11-23 13:46:14,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 605. [2022-11-23 13:46:14,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 425 states have (on average 1.223529411764706) internal successors, (520), 448 states have internal predecessors, (520), 91 states have call successors, (91), 88 states have call predecessors, (91), 88 states have return successors, (125), 90 states have call predecessors, (125), 91 states have call successors, (125) [2022-11-23 13:46:14,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 736 transitions. [2022-11-23 13:46:14,507 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 736 transitions. Word has length 82 [2022-11-23 13:46:14,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:46:14,508 INFO L495 AbstractCegarLoop]: Abstraction has 605 states and 736 transitions. [2022-11-23 13:46:14,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 3 states have call successors, (13), 3 states have call predecessors, (13), 6 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-23 13:46:14,508 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 736 transitions. [2022-11-23 13:46:14,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-23 13:46:14,510 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 13:46:14,511 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:46:14,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42109e51-e8b6-461f-b547-770d23e39b08/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 13:46:14,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42109e51-e8b6-461f-b547-770d23e39b08/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:46:14,716 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 13:46:14,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 13:46:14,717 INFO L85 PathProgramCache]: Analyzing trace with hash 951868501, now seen corresponding path program 1 times [2022-11-23 13:46:14,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 13:46:14,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583281300] [2022-11-23 13:46:14,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:46:14,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 13:46:14,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:46:14,993 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-23 13:46:14,993 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 13:46:14,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583281300] [2022-11-23 13:46:14,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583281300] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 13:46:14,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318003976] [2022-11-23 13:46:14,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 13:46:14,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 13:46:14,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42109e51-e8b6-461f-b547-770d23e39b08/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 13:46:14,996 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42109e51-e8b6-461f-b547-770d23e39b08/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 13:46:15,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42109e51-e8b6-461f-b547-770d23e39b08/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 13:46:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 13:46:15,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-23 13:46:15,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 13:46:15,201 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-23 13:46:15,201 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 13:46:15,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318003976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 13:46:15,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 13:46:15,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 17 [2022-11-23 13:46:15,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61627783] [2022-11-23 13:46:15,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 13:46:15,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 13:46:15,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 13:46:15,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 13:46:15,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-11-23 13:46:15,204 INFO L87 Difference]: Start difference. First operand 605 states and 736 transitions. Second operand has 11 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (12), 5 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 13:46:15,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 13:46:15,611 INFO L93 Difference]: Finished difference Result 1343 states and 1660 transitions. [2022-11-23 13:46:15,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-23 13:46:15,612 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (12), 5 states have call predecessors, (12), 2 states have call successors, (12) Word has length 85 [2022-11-23 13:46:15,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 13:46:15,613 INFO L225 Difference]: With dead ends: 1343 [2022-11-23 13:46:15,613 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 13:46:15,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2022-11-23 13:46:15,616 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 61 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 13:46:15,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 466 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 13:46:15,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 13:46:15,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 13:46:15,618 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 13:46:15,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 13:46:15,618 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 85 [2022-11-23 13:46:15,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 13:46:15,618 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 13:46:15,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (11), 2 states have call predecessors, (11), 5 states have return successors, (12), 5 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-23 13:46:15,619 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 13:46:15,619 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 13:46:15,622 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 13:46:15,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42109e51-e8b6-461f-b547-770d23e39b08/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 13:46:15,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42109e51-e8b6-461f-b547-770d23e39b08/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-23 13:46:15,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-23 13:46:22,564 INFO L895 garLoopResultBuilder]: At program point deactivatePumpENTRY(lines 378 385) the Hoare annotation is: (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (= 1 ~systemActive~0)) (= |old(~pumpRunning~0)| 0)) [2022-11-23 13:46:22,564 INFO L899 garLoopResultBuilder]: For program point deactivatePumpEXIT(lines 378 385) no Hoare annotation was computed. [2022-11-23 13:46:22,564 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 294 300) no Hoare annotation was computed. [2022-11-23 13:46:22,564 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 294 300) the Hoare annotation is: true [2022-11-23 13:46:22,564 INFO L895 garLoopResultBuilder]: At program point changeMethaneLevelENTRY(lines 83 94) the Hoare annotation is: (let ((.cse5 (= |old(~methaneLevelCritical~0)| 0))) (let ((.cse2 (not (= 1 ~systemActive~0))) (.cse0 (not .cse5)) (.cse4 (= ~pumpRunning~0 0)) (.cse1 (= ~methaneLevelCritical~0 0)) (.cse3 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse4 .cse2 .cse5 (not .cse1)) (or .cse0 (not .cse4) .cse1 .cse3 (not (= 0 ~systemActive~0)))))) [2022-11-23 13:46:22,565 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 83 94) no Hoare annotation was computed. [2022-11-23 13:46:22,565 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 901 930) no Hoare annotation was computed. [2022-11-23 13:46:22,565 INFO L902 garLoopResultBuilder]: At program point L926(lines 901 930) the Hoare annotation is: true [2022-11-23 13:46:22,565 INFO L902 garLoopResultBuilder]: At program point cleanupENTRY(lines 901 930) the Hoare annotation is: true [2022-11-23 13:46:22,565 INFO L899 garLoopResultBuilder]: For program point L922(line 922) no Hoare annotation was computed. [2022-11-23 13:46:22,565 INFO L899 garLoopResultBuilder]: For program point L915(lines 915 919) no Hoare annotation was computed. [2022-11-23 13:46:22,566 INFO L902 garLoopResultBuilder]: At program point L915-1(lines 915 919) the Hoare annotation is: true [2022-11-23 13:46:22,566 INFO L902 garLoopResultBuilder]: At program point L911-2(lines 911 925) the Hoare annotation is: true [2022-11-23 13:46:22,566 INFO L902 garLoopResultBuilder]: At program point L907(line 907) the Hoare annotation is: true [2022-11-23 13:46:22,566 INFO L899 garLoopResultBuilder]: For program point L907-1(line 907) no Hoare annotation was computed. [2022-11-23 13:46:22,566 INFO L895 garLoopResultBuilder]: At program point L895(line 895) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (= |old(~pumpRunning~0)| 0))) (and (or .cse0 .cse1) (or (not (= |old(~methAndRunningLastTime~0)| 0)) .cse0) (or (not .cse1) (not (= 0 ~systemActive~0))))) [2022-11-23 13:46:22,566 INFO L899 garLoopResultBuilder]: For program point L507(lines 507 517) no Hoare annotation was computed. [2022-11-23 13:46:22,567 INFO L895 garLoopResultBuilder]: At program point L503(lines 503 520) the Hoare annotation is: (let ((.cse5 (= |old(~pumpRunning~0)| 0))) (let ((.cse10 (not .cse5)) (.cse8 (= ~pumpRunning~0 0)) (.cse1 (= |timeShift_processEnvironment_~tmp~2#1| ~methaneLevelCritical~0)) (.cse12 (= 1 ~systemActive~0)) (.cse2 (<= ~waterLevel~0 |old(~waterLevel~0)|)) (.cse3 (= |timeShift___utac_acc__Specification2_spec__2_~tmp~5#1| ~methaneLevelCritical~0))) (let ((.cse0 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse6 (and .cse10 .cse8 (not (= |timeShift_processEnvironment_~tmp~2#1| 0)) .cse1 .cse12 .cse2 .cse3)) (.cse9 (<= ~waterLevel~0 1)) (.cse11 (not (= 0 ~systemActive~0))) (.cse4 (not .cse12))) (and (or (and .cse0 .cse1 .cse2 .cse3) .cse4 .cse5 .cse6) (let ((.cse7 (= ~methAndRunningLastTime~0 0))) (or (and .cse0 .cse7 .cse2 .cse3) (not (= |old(~methAndRunningLastTime~0)| 0)) .cse4 .cse6 (and .cse7 (<= 2 ~waterLevel~0) .cse2 .cse3) (and .cse8 .cse9 .cse2 .cse3))) (or (not (<= |old(~waterLevel~0)| 1)) .cse10 .cse9 .cse11) (or .cse10 (and .cse8 .cse3) .cse11) (or (= ~methaneLevelCritical~0 0) .cse4 (and .cse10 .cse8 .cse12 .cse2) .cse5))))) [2022-11-23 13:46:22,567 INFO L895 garLoopResultBuilder]: At program point L342(line 342) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse2 (= |old(~pumpRunning~0)| 0))) (and (or (not (= |old(~methAndRunningLastTime~0)| 0)) .cse0 (and .cse1 (= ~methAndRunningLastTime~0 0) (not (= ~pumpRunning~0 0)))) (or (= ~methaneLevelCritical~0 0) .cse0 .cse2) (or .cse0 .cse2 (and .cse1 (or (<= (+ ~waterLevel~0 1) |old(~waterLevel~0)|) (and (not (< 0 ~waterLevel~0)) (<= ~waterLevel~0 |old(~waterLevel~0)|))) (= |timeShift_processEnvironment_~tmp~2#1| ~methaneLevelCritical~0))) (or (not .cse2) (not (= 0 ~systemActive~0))))) [2022-11-23 13:46:22,568 INFO L895 garLoopResultBuilder]: At program point L503-1(lines 495 523) the Hoare annotation is: (let ((.cse10 (= |old(~pumpRunning~0)| 0))) (let ((.cse1 (not (= 0 ~systemActive~0))) (.cse0 (not .cse10)) (.cse5 (not (= ~methaneLevelCritical~0 0))) (.cse8 (not (= 1 ~systemActive~0))) (.cse9 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse2 (= ~pumpRunning~0 0)) (.cse4 (= ~methAndRunningLastTime~0 0)) (.cse6 (<= ~waterLevel~0 |old(~waterLevel~0)|)) (.cse7 (= |timeShift___utac_acc__Specification2_spec__2_~tmp~5#1| ~methaneLevelCritical~0))) (and (or (not (<= |old(~waterLevel~0)| 1)) .cse0 (<= ~waterLevel~0 1) .cse1) (let ((.cse3 (= |timeShift_processEnvironment_~tmp~2#1| ~methaneLevelCritical~0))) (or (and .cse2 .cse3 .cse4 .cse5 .cse6 .cse7) .cse8 (and .cse9 .cse3 .cse4 (= |timeShift___utac_acc__Specification2_spec__2_~tmp~5#1| 0) .cse6 .cse7) .cse10)) (or .cse0 (and .cse9 .cse2 .cse4 .cse7) .cse1) (let ((.cse11 (<= 2 ~waterLevel~0))) (or .cse0 (and (= ~pumpRunning~0 |timeShift___utac_acc__Specification2_spec__2_~tmp___0~2#1|) (not .cse2) .cse11 .cse5 .cse6 .cse7) (not (= |old(~methAndRunningLastTime~0)| 0)) .cse8 (and .cse9 .cse2 .cse4 .cse6 .cse7) (and .cse4 .cse11 .cse6 .cse7)))))) [2022-11-23 13:46:22,568 INFO L895 garLoopResultBuilder]: At program point L338(line 338) the Hoare annotation is: (let ((.cse5 (= |old(~pumpRunning~0)| 0)) (.cse4 (= 1 ~systemActive~0))) (let ((.cse0 (not .cse4)) (.cse1 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse2 (not .cse5)) (.cse3 (or (<= (+ ~waterLevel~0 1) |old(~waterLevel~0)|) (and (not (< 0 ~waterLevel~0)) (<= ~waterLevel~0 |old(~waterLevel~0)|))))) (and (or (not (= |old(~methAndRunningLastTime~0)| 0)) .cse0 (and .cse1 .cse2 .cse3 .cse4)) (or .cse2 (not (= 0 ~systemActive~0))) (or .cse0 .cse5 (and .cse1 .cse2 .cse3 (not (= |timeShift_processEnvironment_~tmp~2#1| 0)) (= |timeShift_processEnvironment_~tmp~2#1| ~methaneLevelCritical~0) .cse4))))) [2022-11-23 13:46:22,568 INFO L895 garLoopResultBuilder]: At program point L334(line 334) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse2 (= |old(~pumpRunning~0)| 0))) (and (or (not (= |old(~methAndRunningLastTime~0)| 0)) .cse0 (and .cse1 (= ~methAndRunningLastTime~0 0) (not (= ~pumpRunning~0 0)))) (or .cse0 (and .cse1 (or (<= (+ ~waterLevel~0 1) |old(~waterLevel~0)|) (and (not (< 0 ~waterLevel~0)) (<= ~waterLevel~0 |old(~waterLevel~0)|)))) .cse2) (or (not .cse2) (not (= 0 ~systemActive~0))))) [2022-11-23 13:46:22,568 INFO L899 garLoopResultBuilder]: For program point L334-1(line 334) no Hoare annotation was computed. [2022-11-23 13:46:22,569 INFO L899 garLoopResultBuilder]: For program point L508(lines 508 514) no Hoare annotation was computed. [2022-11-23 13:46:22,569 INFO L895 garLoopResultBuilder]: At program point L347(line 347) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (= |old(~pumpRunning~0)| 0))) (and (or (not (= |old(~methAndRunningLastTime~0)| 0)) .cse0 (and (= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) (<= ~waterLevel~0 |old(~waterLevel~0)|))) (or .cse0 .cse1) (or (not .cse1) (not (= 0 ~systemActive~0))))) [2022-11-23 13:46:22,569 INFO L895 garLoopResultBuilder]: At program point L347-1(lines 328 352) the Hoare annotation is: (let ((.cse2 (= |old(~pumpRunning~0)| 0)) (.cse3 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse10 (= ~pumpRunning~0 0)) (.cse11 (= 1 ~systemActive~0)) (.cse4 (<= ~waterLevel~0 |old(~waterLevel~0)|))) (let ((.cse5 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse6 (= ~methAndRunningLastTime~0 0)) (.cse8 (and .cse3 .cse10 (<= ~waterLevel~0 1) .cse11 .cse4)) (.cse7 (= ~methaneLevelCritical~0 0)) (.cse1 (not .cse11)) (.cse9 (not .cse2))) (and (let ((.cse0 (= |timeShift_processEnvironment_~tmp~2#1| ~methaneLevelCritical~0))) (or (and (not (= |timeShift_processEnvironment_~tmp~2#1| 0)) .cse0) .cse1 .cse2 (and .cse3 .cse0 .cse4))) (or .cse5 .cse6 .cse1 (not .cse7) .cse8) (or .cse9 .cse5 .cse1 (and .cse6 (<= 2 ~waterLevel~0) .cse4) .cse8) (or .cse7 .cse1 .cse2 (and .cse10 .cse4)) (or .cse9 (not (= 0 ~systemActive~0)))))) [2022-11-23 13:46:22,569 INFO L899 garLoopResultBuilder]: For program point L281-1(lines 281 287) no Hoare annotation was computed. [2022-11-23 13:46:22,570 INFO L895 garLoopResultBuilder]: At program point L501(line 501) the Hoare annotation is: (let ((.cse7 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse1 (= ~pumpRunning~0 0)) (.cse3 (<= ~waterLevel~0 1)) (.cse13 (= 1 ~systemActive~0)) (.cse8 (<= ~waterLevel~0 |old(~waterLevel~0)|)) (.cse6 (= |old(~pumpRunning~0)| 0))) (let ((.cse2 (not (= 0 ~systemActive~0))) (.cse0 (not .cse6)) (.cse9 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse10 (= ~methAndRunningLastTime~0 0)) (.cse12 (and .cse7 .cse1 .cse3 .cse13 .cse8)) (.cse11 (= ~methaneLevelCritical~0 0)) (.cse5 (not .cse13))) (and (or .cse0 .cse1 .cse2) (or (not (<= |old(~waterLevel~0)| 1)) .cse0 .cse3 .cse2) (let ((.cse4 (= |timeShift_processEnvironment_~tmp~2#1| ~methaneLevelCritical~0))) (or (and (not (= |timeShift_processEnvironment_~tmp~2#1| 0)) .cse4) .cse5 .cse6 (and .cse7 .cse4 .cse8))) (or .cse9 .cse10 .cse5 (not .cse11) .cse12) (or .cse0 .cse9 .cse5 (and .cse10 (<= 2 ~waterLevel~0) .cse8) .cse12) (or .cse11 .cse5 .cse6 (and .cse1 .cse8))))) [2022-11-23 13:46:22,570 INFO L899 garLoopResultBuilder]: For program point L501-1(line 501) no Hoare annotation was computed. [2022-11-23 13:46:22,570 INFO L899 garLoopResultBuilder]: For program point L274-1(lines 273 292) no Hoare annotation was computed. [2022-11-23 13:46:22,570 INFO L899 garLoopResultBuilder]: For program point L336(lines 336 344) no Hoare annotation was computed. [2022-11-23 13:46:22,570 INFO L895 garLoopResultBuilder]: At program point timeShiftENTRY(lines 270 293) the Hoare annotation is: (let ((.cse3 (= |old(~pumpRunning~0)| 0))) (let ((.cse0 (not .cse3)) (.cse1 (not (= 0 ~systemActive~0))) (.cse4 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse5 (<= ~waterLevel~0 |old(~waterLevel~0)|)) (.cse2 (not (= 1 ~systemActive~0)))) (and (or .cse0 (= ~pumpRunning~0 0) .cse1) (or (not (<= |old(~waterLevel~0)| 1)) .cse0 (<= ~waterLevel~0 1) .cse1) (or .cse2 .cse3 (and .cse4 .cse5)) (or (and .cse4 (= ~methAndRunningLastTime~0 0) .cse5) (not (= |old(~methAndRunningLastTime~0)| 0)) .cse2)))) [2022-11-23 13:46:22,570 INFO L899 garLoopResultBuilder]: For program point L332(lines 332 349) no Hoare annotation was computed. [2022-11-23 13:46:22,571 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 270 293) no Hoare annotation was computed. [2022-11-23 13:46:22,571 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 895) no Hoare annotation was computed. [2022-11-23 13:46:22,571 INFO L902 garLoopResultBuilder]: At program point isMethaneLevelCriticalENTRY(lines 95 103) the Hoare annotation is: true [2022-11-23 13:46:22,571 INFO L899 garLoopResultBuilder]: For program point isMethaneLevelCriticalEXIT(lines 95 103) no Hoare annotation was computed. [2022-11-23 13:46:22,571 INFO L895 garLoopResultBuilder]: At program point L225(line 225) the Hoare annotation is: (let ((.cse1 (= 1 ~systemActive~0)) (.cse0 (= ~pumpRunning~0 0)) (.cse3 (= ~methAndRunningLastTime~0 0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (not .cse0) .cse1 (not (= ~methaneLevelCritical~0 0)) .cse2) (and .cse3 .cse1 .cse2) (and .cse0 .cse3 .cse2 (= 0 ~systemActive~0)))) [2022-11-23 13:46:22,572 INFO L895 garLoopResultBuilder]: At program point L250(lines 203 252) the Hoare annotation is: (let ((.cse1 (= 1 ~systemActive~0)) (.cse0 (= ~pumpRunning~0 0)) (.cse3 (= ~methAndRunningLastTime~0 0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (not .cse0) .cse1 (not (= ~methaneLevelCritical~0 0)) .cse2) (and .cse3 .cse1 .cse2) (and .cse0 .cse3 .cse2 (= 0 ~systemActive~0)))) [2022-11-23 13:46:22,572 INFO L899 garLoopResultBuilder]: For program point L213(lines 213 219) no Hoare annotation was computed. [2022-11-23 13:46:22,572 INFO L899 garLoopResultBuilder]: For program point L213-1(lines 213 219) no Hoare annotation was computed. [2022-11-23 13:46:22,572 INFO L899 garLoopResultBuilder]: For program point L465(lines 465 471) no Hoare annotation was computed. [2022-11-23 13:46:22,572 INFO L895 garLoopResultBuilder]: At program point L465-1(lines 465 471) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 (not (= 0 ~systemActive~0))) (and .cse0 (= ~methAndRunningLastTime~0 0) .cse1))) [2022-11-23 13:46:22,572 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-11-23 13:46:22,573 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-23 13:46:22,573 INFO L902 garLoopResultBuilder]: At program point L256(lines 193 260) the Hoare annotation is: true [2022-11-23 13:46:22,573 INFO L899 garLoopResultBuilder]: For program point L223(lines 223 229) no Hoare annotation was computed. [2022-11-23 13:46:22,573 INFO L899 garLoopResultBuilder]: For program point L223-1(lines 223 229) no Hoare annotation was computed. [2022-11-23 13:46:22,573 INFO L895 garLoopResultBuilder]: At program point L983(lines 983 990) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) (= ~methaneLevelCritical~0 0) (<= ~waterLevel~0 1) (= 1 ~systemActive~0)) [2022-11-23 13:46:22,573 INFO L895 garLoopResultBuilder]: At program point L215(line 215) the Hoare annotation is: (let ((.cse1 (= 1 ~systemActive~0)) (.cse0 (= ~pumpRunning~0 0)) (.cse3 (= ~methAndRunningLastTime~0 0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (not .cse0) .cse1 (not (= ~methaneLevelCritical~0 0)) .cse2) (and .cse3 .cse1 .cse2) (and .cse0 .cse3 .cse2 (= 0 ~systemActive~0)))) [2022-11-23 13:46:22,574 INFO L902 garLoopResultBuilder]: At program point L983-2(lines 983 990) the Hoare annotation is: true [2022-11-23 13:46:22,574 INFO L895 garLoopResultBuilder]: At program point L467(line 467) the Hoare annotation is: (and (not (= ~pumpRunning~0 0)) (= 1 ~systemActive~0) (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) [2022-11-23 13:46:22,574 INFO L895 garLoopResultBuilder]: At program point L253(lines 202 254) the Hoare annotation is: false [2022-11-23 13:46:22,574 INFO L899 garLoopResultBuilder]: For program point L241(lines 241 247) no Hoare annotation was computed. [2022-11-23 13:46:22,574 INFO L895 garLoopResultBuilder]: At program point L241-2(lines 233 248) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse2 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 (= 0 ~systemActive~0)) (and (= ~methAndRunningLastTime~0 0) .cse2 .cse1) (and (not .cse0) .cse2 .cse1))) [2022-11-23 13:46:22,574 INFO L899 garLoopResultBuilder]: For program point L204(lines 203 252) no Hoare annotation was computed. [2022-11-23 13:46:22,575 INFO L895 garLoopResultBuilder]: At program point L233(lines 233 248) the Hoare annotation is: (let ((.cse1 (= 1 ~systemActive~0)) (.cse3 (= ~pumpRunning~0 0)) (.cse0 (= ~methAndRunningLastTime~0 0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2) (and (not .cse3) .cse1 .cse2) (and .cse3 .cse0 .cse2 (= 0 ~systemActive~0)))) [2022-11-23 13:46:22,575 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 71 82) no Hoare annotation was computed. [2022-11-23 13:46:22,575 INFO L895 garLoopResultBuilder]: At program point waterRiseENTRY(lines 71 82) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (<= ~waterLevel~0 |old(~waterLevel~0)|))) (and (or (= ~pumpRunning~0 0) (= ~methaneLevelCritical~0 0) .cse0 .cse1) (or .cse0 .cse1 (not (= ~methAndRunningLastTime~0 0))))) [2022-11-23 13:46:22,575 INFO L895 garLoopResultBuilder]: At program point L316(line 316) the Hoare annotation is: (let ((.cse1 (= |old(~pumpRunning~0)| 0)) (.cse0 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 (not (= ~methaneLevelCritical~0 0))) (or (not .cse1) (and (= ~pumpRunning~0 0) (<= ~waterLevel~0 1) (= |processEnvironment__wrappee__methaneQuery_~tmp~1#1| 0)) .cse0 (not (= ~methAndRunningLastTime~0 0))))) [2022-11-23 13:46:22,575 INFO L899 garLoopResultBuilder]: For program point L310(lines 310 318) no Hoare annotation was computed. [2022-11-23 13:46:22,576 INFO L895 garLoopResultBuilder]: At program point L306(lines 306 323) the Hoare annotation is: (let ((.cse1 (not (= 1 ~systemActive~0))) (.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (not .cse0) (= ~pumpRunning~0 0) .cse1 (not (= ~methAndRunningLastTime~0 0))) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse1 .cse0 (not (= ~methaneLevelCritical~0 0))))) [2022-11-23 13:46:22,576 INFO L895 garLoopResultBuilder]: At program point L366(line 366) the Hoare annotation is: (let ((.cse1 (= |old(~pumpRunning~0)| 0))) (let ((.cse2 (not .cse1)) (.cse0 (not (= 1 ~systemActive~0))) (.cse3 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 .cse1 (not (= ~methaneLevelCritical~0 0))) (or .cse2 .cse0 (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__methaneQuery_~tmp~1#1| 1)) .cse3) (or .cse2 .cse0 (not (<= ~waterLevel~0 1)) .cse3)))) [2022-11-23 13:46:22,576 INFO L895 garLoopResultBuilder]: At program point L366-1(line 366) the Hoare annotation is: (let ((.cse1 (= |old(~pumpRunning~0)| 0))) (let ((.cse2 (not .cse1)) (.cse0 (not (= 1 ~systemActive~0))) (.cse3 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 .cse1 (not (= ~methaneLevelCritical~0 0))) (or .cse2 .cse0 (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__methaneQuery_~tmp~1#1| 1)) .cse3) (or .cse2 .cse0 (not (<= ~waterLevel~0 1)) .cse3)))) [2022-11-23 13:46:22,576 INFO L895 garLoopResultBuilder]: At program point L321(line 321) the Hoare annotation is: (let ((.cse1 (not (= 1 ~systemActive~0))) (.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (not .cse0) .cse1 (not (= ~methAndRunningLastTime~0 0))) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse1 .cse0 (not (= ~methaneLevelCritical~0 0))))) [2022-11-23 13:46:22,576 INFO L899 garLoopResultBuilder]: For program point L321-1(lines 302 326) no Hoare annotation was computed. [2022-11-23 13:46:22,577 INFO L895 garLoopResultBuilder]: At program point processEnvironment__wrappee__methaneQueryENTRY(lines 302 326) the Hoare annotation is: (let ((.cse1 (not (= 1 ~systemActive~0))) (.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (not .cse0) (= ~pumpRunning~0 0) .cse1 (not (= ~methAndRunningLastTime~0 0))) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse1 .cse0 (not (= ~methaneLevelCritical~0 0))))) [2022-11-23 13:46:22,577 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__methaneQueryEXIT(lines 302 326) no Hoare annotation was computed. [2022-11-23 13:46:22,577 INFO L902 garLoopResultBuilder]: At program point isMethaneAlarmENTRY(lines 386 396) the Hoare annotation is: true [2022-11-23 13:46:22,577 INFO L899 garLoopResultBuilder]: For program point isMethaneAlarmEXIT(lines 386 396) no Hoare annotation was computed. [2022-11-23 13:46:22,577 INFO L902 garLoopResultBuilder]: At program point L391(line 391) the Hoare annotation is: true [2022-11-23 13:46:22,577 INFO L899 garLoopResultBuilder]: For program point L391-1(line 391) no Hoare annotation was computed. [2022-11-23 13:46:22,581 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 13:46:22,583 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 13:46:22,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:46:22 BoogieIcfgContainer [2022-11-23 13:46:22,611 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 13:46:22,612 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 13:46:22,612 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 13:46:22,612 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 13:46:22,613 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:46:05" (3/4) ... [2022-11-23 13:46:22,616 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 13:46:22,621 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2022-11-23 13:46:22,622 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2022-11-23 13:46:22,622 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2022-11-23 13:46:22,622 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2022-11-23 13:46:22,622 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2022-11-23 13:46:22,622 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2022-11-23 13:46:22,623 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2022-11-23 13:46:22,623 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__methaneQuery [2022-11-23 13:46:22,623 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneAlarm [2022-11-23 13:46:22,630 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 45 nodes and edges [2022-11-23 13:46:22,630 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-11-23 13:46:22,631 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-23 13:46:22,631 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 13:46:22,632 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 13:46:22,657 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(0 == systemActive)) && (((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || waterLevel <= 1) || !(0 == systemActive))) && ((!(1 == systemActive) || \old(pumpRunning) == 0) || (pumpRunning == \old(pumpRunning) && waterLevel <= \old(waterLevel)))) && ((((pumpRunning == \old(pumpRunning) && methAndRunningLastTime == 0) && waterLevel <= \old(waterLevel)) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) [2022-11-23 13:46:22,658 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((!(tmp == 0) && tmp == methaneLevelCritical) || !(1 == systemActive)) || \old(pumpRunning) == 0) || ((pumpRunning == \old(pumpRunning) && tmp == methaneLevelCritical) && waterLevel <= \old(waterLevel))) && ((((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || ((((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && waterLevel <= 1) && 1 == systemActive) && waterLevel <= \old(waterLevel)))) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || ((methAndRunningLastTime == 0 && 2 <= waterLevel) && waterLevel <= \old(waterLevel))) || ((((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && waterLevel <= 1) && 1 == systemActive) && waterLevel <= \old(waterLevel)))) && (((methaneLevelCritical == 0 || !(1 == systemActive)) || \old(pumpRunning) == 0) || (pumpRunning == 0 && waterLevel <= \old(waterLevel)))) && (!(\old(pumpRunning) == 0) || !(0 == systemActive)) [2022-11-23 13:46:22,658 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 == systemActive)) || !(methAndRunningLastTime == 0)) && (((pumpRunning == \old(pumpRunning) || !(1 == systemActive)) || \old(pumpRunning) == 0) || !(methaneLevelCritical == 0)) [2022-11-23 13:46:22,659 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((pumpRunning == \old(pumpRunning) && tmp == methaneLevelCritical) && waterLevel <= \old(waterLevel)) && tmp == methaneLevelCritical) || !(1 == systemActive)) || \old(pumpRunning) == 0) || ((((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && !(tmp == 0)) && tmp == methaneLevelCritical) && 1 == systemActive) && waterLevel <= \old(waterLevel)) && tmp == methaneLevelCritical)) && ((((((((pumpRunning == \old(pumpRunning) && methAndRunningLastTime == 0) && waterLevel <= \old(waterLevel)) && tmp == methaneLevelCritical) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || ((((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && !(tmp == 0)) && tmp == methaneLevelCritical) && 1 == systemActive) && waterLevel <= \old(waterLevel)) && tmp == methaneLevelCritical)) || (((methAndRunningLastTime == 0 && 2 <= waterLevel) && waterLevel <= \old(waterLevel)) && tmp == methaneLevelCritical)) || (((pumpRunning == 0 && waterLevel <= 1) && waterLevel <= \old(waterLevel)) && tmp == methaneLevelCritical))) && (((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || waterLevel <= 1) || !(0 == systemActive))) && ((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && tmp == methaneLevelCritical)) || !(0 == systemActive))) && (((methaneLevelCritical == 0 || !(1 == systemActive)) || (((!(\old(pumpRunning) == 0) && pumpRunning == 0) && 1 == systemActive) && waterLevel <= \old(waterLevel))) || \old(pumpRunning) == 0) [2022-11-23 13:46:22,659 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || waterLevel <= 1) || !(0 == systemActive)) && ((((((((pumpRunning == 0 && tmp == methaneLevelCritical) && methAndRunningLastTime == 0) && !(methaneLevelCritical == 0)) && waterLevel <= \old(waterLevel)) && tmp == methaneLevelCritical) || !(1 == systemActive)) || (((((pumpRunning == \old(pumpRunning) && tmp == methaneLevelCritical) && methAndRunningLastTime == 0) && tmp == 0) && waterLevel <= \old(waterLevel)) && tmp == methaneLevelCritical)) || \old(pumpRunning) == 0)) && ((!(\old(pumpRunning) == 0) || (((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && methAndRunningLastTime == 0) && tmp == methaneLevelCritical)) || !(0 == systemActive))) && (((((!(\old(pumpRunning) == 0) || (((((pumpRunning == tmp___0 && !(pumpRunning == 0)) && 2 <= waterLevel) && !(methaneLevelCritical == 0)) && waterLevel <= \old(waterLevel)) && tmp == methaneLevelCritical)) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || ((((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && methAndRunningLastTime == 0) && waterLevel <= \old(waterLevel)) && tmp == methaneLevelCritical)) || (((methAndRunningLastTime == 0 && 2 <= waterLevel) && waterLevel <= \old(waterLevel)) && tmp == methaneLevelCritical)) [2022-11-23 13:46:22,660 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(1 == systemActive) || \old(pumpRunning) == 0) || !(methaneLevelCritical == 0)) && (((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || (pumpRunning == 0 && tmp == 1)) || !(methAndRunningLastTime == 0))) && (((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(waterLevel <= 1)) || !(methAndRunningLastTime == 0)) [2022-11-23 13:46:22,660 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!(1 == systemActive) || \old(pumpRunning) == 0) && (!(\old(methAndRunningLastTime) == 0) || !(1 == systemActive))) && (!(\old(pumpRunning) == 0) || !(0 == systemActive)) [2022-11-23 13:46:22,683 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42109e51-e8b6-461f-b547-770d23e39b08/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 13:46:22,683 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 13:46:22,684 INFO L158 Benchmark]: Toolchain (without parser) took 18762.83ms. Allocated memory was 180.4MB in the beginning and 274.7MB in the end (delta: 94.4MB). Free memory was 132.4MB in the beginning and 126.0MB in the end (delta: 6.4MB). Peak memory consumption was 101.6MB. Max. memory is 16.1GB. [2022-11-23 13:46:22,684 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 180.4MB. Free memory is still 148.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 13:46:22,685 INFO L158 Benchmark]: CACSL2BoogieTranslator took 503.99ms. Allocated memory is still 180.4MB. Free memory was 132.4MB in the beginning and 113.1MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-23 13:46:22,685 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.73ms. Allocated memory is still 180.4MB. Free memory was 113.1MB in the beginning and 111.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 13:46:22,685 INFO L158 Benchmark]: Boogie Preprocessor took 30.16ms. Allocated memory is still 180.4MB. Free memory was 111.0MB in the beginning and 109.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 13:46:22,686 INFO L158 Benchmark]: RCFGBuilder took 784.65ms. Allocated memory is still 180.4MB. Free memory was 109.3MB in the beginning and 84.6MB in the end (delta: 24.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-23 13:46:22,686 INFO L158 Benchmark]: TraceAbstraction took 17313.57ms. Allocated memory was 180.4MB in the beginning and 274.7MB in the end (delta: 94.4MB). Free memory was 83.7MB in the beginning and 132.3MB in the end (delta: -48.6MB). Peak memory consumption was 100.3MB. Max. memory is 16.1GB. [2022-11-23 13:46:22,686 INFO L158 Benchmark]: Witness Printer took 71.31ms. Allocated memory is still 274.7MB. Free memory was 132.3MB in the beginning and 126.0MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-23 13:46:22,688 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 180.4MB. Free memory is still 148.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 503.99ms. Allocated memory is still 180.4MB. Free memory was 132.4MB in the beginning and 113.1MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.73ms. Allocated memory is still 180.4MB. Free memory was 113.1MB in the beginning and 111.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.16ms. Allocated memory is still 180.4MB. Free memory was 111.0MB in the beginning and 109.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 784.65ms. Allocated memory is still 180.4MB. Free memory was 109.3MB in the beginning and 84.6MB in the end (delta: 24.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 17313.57ms. Allocated memory was 180.4MB in the beginning and 274.7MB in the end (delta: 94.4MB). Free memory was 83.7MB in the beginning and 132.3MB in the end (delta: -48.6MB). Peak memory consumption was 100.3MB. Max. memory is 16.1GB. * Witness Printer took 71.31ms. Allocated memory is still 274.7MB. Free memory was 132.3MB in the beginning and 126.0MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.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: 895]: 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 10 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 17.2s, OverallIterations: 12, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 6.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 818 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 785 mSDsluCounter, 3061 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2121 mSDsCounter, 171 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2063 IncrementalHoareTripleChecker+Invalid, 2234 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 171 mSolverCounterUnsat, 940 mSDtfsCounter, 2063 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 705 GetRequests, 576 SyntacticMatches, 1 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=605occurred in iteration=11, InterpolantAutomatonStates: 96, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 12 MinimizatonAttempts, 190 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 40 LocationsWithAnnotation, 1837 PreInvPairs, 2092 NumberOfFragments, 1495 HoareAnnotationTreeSize, 1837 FomulaSimplifications, 3588 FormulaSimplificationTreeSizeReduction, 1.4s HoareSimplificationTime, 40 FomulaSimplificationsInter, 36818 FormulaSimplificationTreeSizeReductionInter, 5.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 1120 NumberOfCodeBlocks, 1120 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 1180 ConstructedInterpolants, 0 QuantifiedInterpolants, 2724 SizeOfPredicates, 28 NumberOfNonLiveVariables, 2007 ConjunctsInSsa, 105 ConjunctsInUnsatCore, 19 InterpolantComputations, 12 PerfectInterpolantSequences, 462/534 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: 983]: Loop Invariant Derived loop invariant: (((pumpRunning == 0 && methAndRunningLastTime == 0) && methaneLevelCritical == 0) && waterLevel <= 1) && 1 == systemActive - InvariantResult [Line: 202]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 895]: Loop Invariant Derived loop invariant: ((!(1 == systemActive) || \old(pumpRunning) == 0) && (!(\old(methAndRunningLastTime) == 0) || !(1 == systemActive))) && (!(\old(pumpRunning) == 0) || !(0 == systemActive)) - InvariantResult [Line: 193]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 983]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 911]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 495]: Loop Invariant Derived loop invariant: (((((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || waterLevel <= 1) || !(0 == systemActive)) && ((((((((pumpRunning == 0 && tmp == methaneLevelCritical) && methAndRunningLastTime == 0) && !(methaneLevelCritical == 0)) && waterLevel <= \old(waterLevel)) && tmp == methaneLevelCritical) || !(1 == systemActive)) || (((((pumpRunning == \old(pumpRunning) && tmp == methaneLevelCritical) && methAndRunningLastTime == 0) && tmp == 0) && waterLevel <= \old(waterLevel)) && tmp == methaneLevelCritical)) || \old(pumpRunning) == 0)) && ((!(\old(pumpRunning) == 0) || (((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && methAndRunningLastTime == 0) && tmp == methaneLevelCritical)) || !(0 == systemActive))) && (((((!(\old(pumpRunning) == 0) || (((((pumpRunning == tmp___0 && !(pumpRunning == 0)) && 2 <= waterLevel) && !(methaneLevelCritical == 0)) && waterLevel <= \old(waterLevel)) && tmp == methaneLevelCritical)) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || ((((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && methAndRunningLastTime == 0) && waterLevel <= \old(waterLevel)) && tmp == methaneLevelCritical)) || (((methAndRunningLastTime == 0 && 2 <= waterLevel) && waterLevel <= \old(waterLevel)) && tmp == methaneLevelCritical)) - InvariantResult [Line: 503]: Loop Invariant Derived loop invariant: (((((((((pumpRunning == \old(pumpRunning) && tmp == methaneLevelCritical) && waterLevel <= \old(waterLevel)) && tmp == methaneLevelCritical) || !(1 == systemActive)) || \old(pumpRunning) == 0) || ((((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && !(tmp == 0)) && tmp == methaneLevelCritical) && 1 == systemActive) && waterLevel <= \old(waterLevel)) && tmp == methaneLevelCritical)) && ((((((((pumpRunning == \old(pumpRunning) && methAndRunningLastTime == 0) && waterLevel <= \old(waterLevel)) && tmp == methaneLevelCritical) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || ((((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && !(tmp == 0)) && tmp == methaneLevelCritical) && 1 == systemActive) && waterLevel <= \old(waterLevel)) && tmp == methaneLevelCritical)) || (((methAndRunningLastTime == 0 && 2 <= waterLevel) && waterLevel <= \old(waterLevel)) && tmp == methaneLevelCritical)) || (((pumpRunning == 0 && waterLevel <= 1) && waterLevel <= \old(waterLevel)) && tmp == methaneLevelCritical))) && (((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || waterLevel <= 1) || !(0 == systemActive))) && ((!(\old(pumpRunning) == 0) || (pumpRunning == 0 && tmp == methaneLevelCritical)) || !(0 == systemActive))) && (((methaneLevelCritical == 0 || !(1 == systemActive)) || (((!(\old(pumpRunning) == 0) && pumpRunning == 0) && 1 == systemActive) && waterLevel <= \old(waterLevel))) || \old(pumpRunning) == 0) - InvariantResult [Line: 366]: Loop Invariant Derived loop invariant: (((!(1 == systemActive) || \old(pumpRunning) == 0) || !(methaneLevelCritical == 0)) && (((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || (pumpRunning == 0 && tmp == 1)) || !(methAndRunningLastTime == 0))) && (((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(waterLevel <= 1)) || !(methAndRunningLastTime == 0)) - InvariantResult [Line: 203]: Loop Invariant Derived loop invariant: ((((!(pumpRunning == 0) && 1 == systemActive) && !(methaneLevelCritical == 0)) && splverifierCounter == 0) || ((methAndRunningLastTime == 0 && 1 == systemActive) && splverifierCounter == 0)) || (((pumpRunning == 0 && methAndRunningLastTime == 0) && splverifierCounter == 0) && 0 == systemActive) - InvariantResult [Line: 270]: Loop Invariant Derived loop invariant: ((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(0 == systemActive)) && (((!(\old(waterLevel) <= 1) || !(\old(pumpRunning) == 0)) || waterLevel <= 1) || !(0 == systemActive))) && ((!(1 == systemActive) || \old(pumpRunning) == 0) || (pumpRunning == \old(pumpRunning) && waterLevel <= \old(waterLevel)))) && ((((pumpRunning == \old(pumpRunning) && methAndRunningLastTime == 0) && waterLevel <= \old(waterLevel)) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) - InvariantResult [Line: 465]: Loop Invariant Derived loop invariant: ((pumpRunning == 0 && splverifierCounter == 0) && !(0 == systemActive)) || ((pumpRunning == 0 && methAndRunningLastTime == 0) && splverifierCounter == 0) - InvariantResult [Line: 328]: Loop Invariant Derived loop invariant: (((((((!(tmp == 0) && tmp == methaneLevelCritical) || !(1 == systemActive)) || \old(pumpRunning) == 0) || ((pumpRunning == \old(pumpRunning) && tmp == methaneLevelCritical) && waterLevel <= \old(waterLevel))) && ((((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || ((((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && waterLevel <= 1) && 1 == systemActive) && waterLevel <= \old(waterLevel)))) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || ((methAndRunningLastTime == 0 && 2 <= waterLevel) && waterLevel <= \old(waterLevel))) || ((((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && waterLevel <= 1) && 1 == systemActive) && waterLevel <= \old(waterLevel)))) && (((methaneLevelCritical == 0 || !(1 == systemActive)) || \old(pumpRunning) == 0) || (pumpRunning == 0 && waterLevel <= \old(waterLevel)))) && (!(\old(pumpRunning) == 0) || !(0 == systemActive)) - InvariantResult [Line: 233]: Loop Invariant Derived loop invariant: (((methAndRunningLastTime == 0 && 1 == systemActive) && splverifierCounter == 0) || ((!(pumpRunning == 0) && 1 == systemActive) && splverifierCounter == 0)) || (((pumpRunning == 0 && methAndRunningLastTime == 0) && splverifierCounter == 0) && 0 == systemActive) - InvariantResult [Line: 306]: Loop Invariant Derived loop invariant: (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 == systemActive)) || !(methAndRunningLastTime == 0)) && (((pumpRunning == \old(pumpRunning) || !(1 == systemActive)) || \old(pumpRunning) == 0) || !(methaneLevelCritical == 0)) - InvariantResult [Line: 901]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-23 13:46:22,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42109e51-e8b6-461f-b547-770d23e39b08/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