./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product50.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_12b311c5-6ed2-4dbd-9cc9-719875b56a23/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b311c5-6ed2-4dbd-9cc9-719875b56a23/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b311c5-6ed2-4dbd-9cc9-719875b56a23/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b311c5-6ed2-4dbd-9cc9-719875b56a23/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product50.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b311c5-6ed2-4dbd-9cc9-719875b56a23/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b311c5-6ed2-4dbd-9cc9-719875b56a23/bin/utaipan-6cKwYrpEi9 --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 f645b80d4169704e02b3c19c65a00755e1e28cc942f5a2526cd4b4e1dcca30cf --- 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-6b4ec56 [2022-11-20 21:10:14,030 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 21:10:14,033 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 21:10:14,086 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 21:10:14,088 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 21:10:14,093 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 21:10:14,095 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 21:10:14,100 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 21:10:14,102 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 21:10:14,107 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 21:10:14,109 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 21:10:14,110 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 21:10:14,111 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 21:10:14,112 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 21:10:14,114 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 21:10:14,116 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 21:10:14,117 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 21:10:14,118 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 21:10:14,120 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 21:10:14,123 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 21:10:14,125 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 21:10:14,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 21:10:14,128 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 21:10:14,129 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 21:10:14,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 21:10:14,135 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 21:10:14,135 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 21:10:14,136 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 21:10:14,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 21:10:14,139 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 21:10:14,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 21:10:14,140 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 21:10:14,141 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 21:10:14,142 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 21:10:14,144 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 21:10:14,144 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 21:10:14,146 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 21:10:14,146 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 21:10:14,146 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 21:10:14,148 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 21:10:14,149 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 21:10:14,150 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b311c5-6ed2-4dbd-9cc9-719875b56a23/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 21:10:14,182 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 21:10:14,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 21:10:14,183 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 21:10:14,183 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 21:10:14,184 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 21:10:14,184 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 21:10:14,185 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 21:10:14,185 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 21:10:14,186 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 21:10:14,186 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 21:10:14,186 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 21:10:14,187 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 21:10:14,187 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 21:10:14,188 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 21:10:14,188 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 21:10:14,188 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 21:10:14,189 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 21:10:14,189 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 21:10:14,190 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 21:10:14,191 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 21:10:14,191 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 21:10:14,191 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 21:10:14,192 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 21:10:14,192 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 21:10:14,192 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 21:10:14,193 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 21:10:14,193 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 21:10:14,193 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 21:10:14,194 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 21:10:14,194 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 21:10:14,194 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 21:10:14,195 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 21:10:14,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:10:14,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 21:10:14,196 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 21:10:14,196 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 21:10:14,196 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 21:10:14,197 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 21:10:14,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 21:10:14,197 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 21:10:14,198 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 21:10:14,198 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_12b311c5-6ed2-4dbd-9cc9-719875b56a23/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b311c5-6ed2-4dbd-9cc9-719875b56a23/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f645b80d4169704e02b3c19c65a00755e1e28cc942f5a2526cd4b4e1dcca30cf [2022-11-20 21:10:14,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 21:10:14,564 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 21:10:14,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 21:10:14,570 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 21:10:14,571 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 21:10:14,573 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b311c5-6ed2-4dbd-9cc9-719875b56a23/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/product-lines/minepump_spec2_product50.cil.c [2022-11-20 21:10:18,213 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 21:10:18,545 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 21:10:18,545 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b311c5-6ed2-4dbd-9cc9-719875b56a23/sv-benchmarks/c/product-lines/minepump_spec2_product50.cil.c [2022-11-20 21:10:18,560 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b311c5-6ed2-4dbd-9cc9-719875b56a23/bin/utaipan-6cKwYrpEi9/data/24408ec18/2f176ca74f974126b94fd0d26cf4dc45/FLAG2a24f51d5 [2022-11-20 21:10:18,603 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b311c5-6ed2-4dbd-9cc9-719875b56a23/bin/utaipan-6cKwYrpEi9/data/24408ec18/2f176ca74f974126b94fd0d26cf4dc45 [2022-11-20 21:10:18,606 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 21:10:18,608 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 21:10:18,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 21:10:18,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 21:10:18,615 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 21:10:18,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:10:18" (1/1) ... [2022-11-20 21:10:18,618 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4da494d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:10:18, skipping insertion in model container [2022-11-20 21:10:18,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:10:18" (1/1) ... [2022-11-20 21:10:18,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 21:10:18,692 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 21:10:19,020 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_12b311c5-6ed2-4dbd-9cc9-719875b56a23/sv-benchmarks/c/product-lines/minepump_spec2_product50.cil.c[18939,18952] [2022-11-20 21:10:19,025 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:10:19,039 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 21:10:19,121 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_12b311c5-6ed2-4dbd-9cc9-719875b56a23/sv-benchmarks/c/product-lines/minepump_spec2_product50.cil.c[18939,18952] [2022-11-20 21:10:19,122 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:10:19,144 INFO L208 MainTranslator]: Completed translation [2022-11-20 21:10:19,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:10:19 WrapperNode [2022-11-20 21:10:19,145 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 21:10:19,146 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 21:10:19,147 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 21:10:19,147 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 21:10:19,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:10:19" (1/1) ... [2022-11-20 21:10:19,174 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:10:19" (1/1) ... [2022-11-20 21:10:19,227 INFO L138 Inliner]: procedures = 57, calls = 100, calls flagged for inlining = 24, calls inlined = 21, statements flattened = 206 [2022-11-20 21:10:19,229 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 21:10:19,230 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 21:10:19,230 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 21:10:19,231 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 21:10:19,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:10:19" (1/1) ... [2022-11-20 21:10:19,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:10:19" (1/1) ... [2022-11-20 21:10:19,260 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:10:19" (1/1) ... [2022-11-20 21:10:19,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:10:19" (1/1) ... [2022-11-20 21:10:19,268 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:10:19" (1/1) ... [2022-11-20 21:10:19,288 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:10:19" (1/1) ... [2022-11-20 21:10:19,290 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:10:19" (1/1) ... [2022-11-20 21:10:19,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:10:19" (1/1) ... [2022-11-20 21:10:19,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 21:10:19,301 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 21:10:19,301 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 21:10:19,302 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 21:10:19,303 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:10:19" (1/1) ... [2022-11-20 21:10:19,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:10:19,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b311c5-6ed2-4dbd-9cc9-719875b56a23/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:10:19,343 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b311c5-6ed2-4dbd-9cc9-719875b56a23/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 21:10:19,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b311c5-6ed2-4dbd-9cc9-719875b56a23/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 21:10:19,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 21:10:19,407 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-20 21:10:19,407 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-20 21:10:19,408 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2022-11-20 21:10:19,408 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2022-11-20 21:10:19,408 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-20 21:10:19,408 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-20 21:10:19,409 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-20 21:10:19,409 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-20 21:10:19,409 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2022-11-20 21:10:19,409 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2022-11-20 21:10:19,410 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-20 21:10:19,410 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-20 21:10:19,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 21:10:19,410 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-20 21:10:19,411 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-20 21:10:19,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 21:10:19,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 21:10:19,515 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 21:10:19,518 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 21:10:19,956 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 21:10:20,197 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 21:10:20,200 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 21:10:20,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:10:20 BoogieIcfgContainer [2022-11-20 21:10:20,204 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 21:10:20,206 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 21:10:20,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 21:10:20,211 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 21:10:20,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:10:18" (1/3) ... [2022-11-20 21:10:20,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f2b3d47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:10:20, skipping insertion in model container [2022-11-20 21:10:20,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:10:19" (2/3) ... [2022-11-20 21:10:20,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f2b3d47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:10:20, skipping insertion in model container [2022-11-20 21:10:20,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:10:20" (3/3) ... [2022-11-20 21:10:20,215 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product50.cil.c [2022-11-20 21:10:20,240 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 21:10:20,241 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 21:10:20,300 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 21:10:20,309 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;@40cc2c52, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 21:10:20,309 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 21:10:20,324 INFO L276 IsEmpty]: Start isEmpty. Operand has 56 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 44 states have internal predecessors, (52), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-20 21:10:20,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 21:10:20,342 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:10:20,343 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:10:20,344 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:10:20,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:10:20,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1305189709, now seen corresponding path program 1 times [2022-11-20 21:10:20,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:10:20,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871611886] [2022-11-20 21:10:20,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:10:20,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:10:20,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:10:20,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:10:20,638 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:10:20,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871611886] [2022-11-20 21:10:20,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871611886] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:10:20,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:10:20,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 21:10:20,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307151413] [2022-11-20 21:10:20,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:10:20,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 21:10:20,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:10:20,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 21:10:20,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 21:10:20,727 INFO L87 Difference]: Start difference. First operand has 56 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 44 states have internal predecessors, (52), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) 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) [2022-11-20 21:10:20,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:10:20,860 INFO L93 Difference]: Finished difference Result 110 states and 149 transitions. [2022-11-20 21:10:20,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 21:10:20,867 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 [2022-11-20 21:10:20,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:10:20,881 INFO L225 Difference]: With dead ends: 110 [2022-11-20 21:10:20,881 INFO L226 Difference]: Without dead ends: 51 [2022-11-20 21:10:20,886 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 [2022-11-20 21:10:20,890 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:10:20,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:10:20,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-20 21:10:20,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-11-20 21:10:20,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 40 states have internal predecessors, (44), 11 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-20 21:10:20,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 65 transitions. [2022-11-20 21:10:20,942 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 65 transitions. Word has length 17 [2022-11-20 21:10:20,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:10:20,943 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 65 transitions. [2022-11-20 21:10:20,943 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) [2022-11-20 21:10:20,943 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 65 transitions. [2022-11-20 21:10:20,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 21:10:20,946 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:10:20,946 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:10:20,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 21:10:20,947 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:10:20,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:10:20,948 INFO L85 PathProgramCache]: Analyzing trace with hash 555937763, now seen corresponding path program 1 times [2022-11-20 21:10:20,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:10:20,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624627924] [2022-11-20 21:10:20,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:10:20,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:10:20,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:10:21,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:10:21,130 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:10:21,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624627924] [2022-11-20 21:10:21,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624627924] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:10:21,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:10:21,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:10:21,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130707000] [2022-11-20 21:10:21,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:10:21,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:10:21,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:10:21,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:10:21,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:10:21,140 INFO L87 Difference]: Start difference. First operand 51 states and 65 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) [2022-11-20 21:10:21,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:10:21,243 INFO L93 Difference]: Finished difference Result 79 states and 101 transitions. [2022-11-20 21:10:21,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:10:21,244 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 [2022-11-20 21:10:21,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:10:21,250 INFO L225 Difference]: With dead ends: 79 [2022-11-20 21:10:21,251 INFO L226 Difference]: Without dead ends: 43 [2022-11-20 21:10:21,252 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 [2022-11-20 21:10:21,256 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:10:21,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 71 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:10:21,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-20 21:10:21,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-11-20 21:10:21,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 35 states have internal predecessors, (38), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-20 21:10:21,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2022-11-20 21:10:21,279 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 18 [2022-11-20 21:10:21,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:10:21,286 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions. [2022-11-20 21:10:21,286 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) [2022-11-20 21:10:21,287 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2022-11-20 21:10:21,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-20 21:10:21,288 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:10:21,288 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] [2022-11-20 21:10:21,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 21:10:21,289 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:10:21,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:10:21,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1577652618, now seen corresponding path program 1 times [2022-11-20 21:10:21,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:10:21,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860300537] [2022-11-20 21:10:21,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:10:21,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:10:21,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:10:21,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:10:21,664 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:10:21,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860300537] [2022-11-20 21:10:21,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860300537] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:10:21,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:10:21,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 21:10:21,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769721086] [2022-11-20 21:10:21,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:10:21,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 21:10:21,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:10:21,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 21:10:21,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 21:10:21,669 INFO L87 Difference]: Start difference. First operand 43 states and 54 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-11-20 21:10:21,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:10:21,826 INFO L93 Difference]: Finished difference Result 84 states and 107 transitions. [2022-11-20 21:10:21,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 21:10:21,828 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 20 [2022-11-20 21:10:21,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:10:21,829 INFO L225 Difference]: With dead ends: 84 [2022-11-20 21:10:21,829 INFO L226 Difference]: Without dead ends: 43 [2022-11-20 21:10:21,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 21:10:21,831 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 49 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:10:21,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 51 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:10:21,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-20 21:10:21,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-11-20 21:10:21,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 35 states have internal predecessors, (37), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-20 21:10:21,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2022-11-20 21:10:21,850 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 20 [2022-11-20 21:10:21,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:10:21,851 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2022-11-20 21:10:21,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-11-20 21:10:21,851 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2022-11-20 21:10:21,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-20 21:10:21,854 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:10:21,854 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] [2022-11-20 21:10:21,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 21:10:21,854 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:10:21,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:10:21,855 INFO L85 PathProgramCache]: Analyzing trace with hash -970428982, now seen corresponding path program 1 times [2022-11-20 21:10:21,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:10:21,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803457135] [2022-11-20 21:10:21,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:10:21,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:10:21,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:10:22,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:10:22,016 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:10:22,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803457135] [2022-11-20 21:10:22,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803457135] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:10:22,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:10:22,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 21:10:22,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330411323] [2022-11-20 21:10:22,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:10:22,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 21:10:22,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:10:22,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 21:10:22,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 21:10:22,022 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2022-11-20 21:10:22,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:10:22,231 INFO L93 Difference]: Finished difference Result 122 states and 153 transitions. [2022-11-20 21:10:22,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 21:10:22,232 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 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 23 [2022-11-20 21:10:22,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:10:22,238 INFO L225 Difference]: With dead ends: 122 [2022-11-20 21:10:22,238 INFO L226 Difference]: Without dead ends: 81 [2022-11-20 21:10:22,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-20 21:10:22,250 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 31 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:10:22,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 199 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:10:22,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-20 21:10:22,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 77. [2022-11-20 21:10:22,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 50 states have (on average 1.3) internal successors, (65), 62 states have internal predecessors, (65), 15 states have call successors, (15), 11 states have call predecessors, (15), 11 states have return successors, (15), 11 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-20 21:10:22,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 95 transitions. [2022-11-20 21:10:22,285 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 95 transitions. Word has length 23 [2022-11-20 21:10:22,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:10:22,285 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 95 transitions. [2022-11-20 21:10:22,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 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) [2022-11-20 21:10:22,286 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 95 transitions. [2022-11-20 21:10:22,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 21:10:22,287 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:10:22,287 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, 1, 1] [2022-11-20 21:10:22,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 21:10:22,288 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:10:22,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:10:22,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1042736529, now seen corresponding path program 1 times [2022-11-20 21:10:22,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:10:22,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919240624] [2022-11-20 21:10:22,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:10:22,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:10:22,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:10:22,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:10:22,391 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:10:22,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919240624] [2022-11-20 21:10:22,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919240624] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:10:22,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:10:22,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:10:22,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121672523] [2022-11-20 21:10:22,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:10:22,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:10:22,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:10:22,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:10:22,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:10:22,403 INFO L87 Difference]: Start difference. First operand 77 states and 95 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 21:10:22,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:10:22,489 INFO L93 Difference]: Finished difference Result 118 states and 148 transitions. [2022-11-20 21:10:22,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:10:22,489 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2022-11-20 21:10:22,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:10:22,496 INFO L225 Difference]: With dead ends: 118 [2022-11-20 21:10:22,496 INFO L226 Difference]: Without dead ends: 116 [2022-11-20 21:10:22,496 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 [2022-11-20 21:10:22,497 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 29 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:10:22,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 82 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 21:10:22,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-20 21:10:22,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2022-11-20 21:10:22,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 75 states have (on average 1.3066666666666666) internal successors, (98), 93 states have internal predecessors, (98), 23 states have call successors, (23), 17 states have call predecessors, (23), 17 states have return successors, (25), 17 states have call predecessors, (25), 23 states have call successors, (25) [2022-11-20 21:10:22,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 146 transitions. [2022-11-20 21:10:22,540 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 146 transitions. Word has length 26 [2022-11-20 21:10:22,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:10:22,541 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 146 transitions. [2022-11-20 21:10:22,541 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, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 21:10:22,541 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 146 transitions. [2022-11-20 21:10:22,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-20 21:10:22,550 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:10:22,551 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 21:10:22,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 21:10:22,551 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:10:22,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:10:22,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1334863293, now seen corresponding path program 1 times [2022-11-20 21:10:22,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:10:22,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553097830] [2022-11-20 21:10:22,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:10:22,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:10:22,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:10:22,669 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 21:10:22,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:10:22,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553097830] [2022-11-20 21:10:22,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553097830] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:10:22,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:10:22,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 21:10:22,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963355282] [2022-11-20 21:10:22,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:10:22,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:10:22,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:10:22,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:10:22,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 21:10:22,672 INFO L87 Difference]: Start difference. First operand 116 states and 146 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 21:10:22,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:10:22,748 INFO L93 Difference]: Finished difference Result 326 states and 427 transitions. [2022-11-20 21:10:22,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:10:22,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 48 [2022-11-20 21:10:22,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:10:22,752 INFO L225 Difference]: With dead ends: 326 [2022-11-20 21:10:22,752 INFO L226 Difference]: Without dead ends: 212 [2022-11-20 21:10:22,753 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 [2022-11-20 21:10:22,754 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 26 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:10:22,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 88 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 21:10:22,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-11-20 21:10:22,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 210. [2022-11-20 21:10:22,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 141 states have (on average 1.2411347517730495) internal successors, (175), 158 states have internal predecessors, (175), 34 states have call successors, (34), 34 states have call predecessors, (34), 34 states have return successors, (54), 34 states have call predecessors, (54), 34 states have call successors, (54) [2022-11-20 21:10:22,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 263 transitions. [2022-11-20 21:10:22,800 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 263 transitions. Word has length 48 [2022-11-20 21:10:22,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:10:22,801 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 263 transitions. [2022-11-20 21:10:22,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 21:10:22,801 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 263 transitions. [2022-11-20 21:10:22,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-20 21:10:22,810 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:10:22,810 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 21:10:22,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 21:10:22,811 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:10:22,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:10:22,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1333939930, now seen corresponding path program 1 times [2022-11-20 21:10:22,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:10:22,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806759582] [2022-11-20 21:10:22,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:10:22,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:10:22,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:10:23,266 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 21:10:23,267 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:10:23,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806759582] [2022-11-20 21:10:23,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806759582] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:10:23,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:10:23,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 21:10:23,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724873178] [2022-11-20 21:10:23,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:10:23,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 21:10:23,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:10:23,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 21:10:23,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-20 21:10:23,269 INFO L87 Difference]: Start difference. First operand 210 states and 263 transitions. Second operand has 10 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-20 21:10:23,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:10:23,695 INFO L93 Difference]: Finished difference Result 621 states and 820 transitions. [2022-11-20 21:10:23,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 21:10:23,696 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 53 [2022-11-20 21:10:23,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:10:23,700 INFO L225 Difference]: With dead ends: 621 [2022-11-20 21:10:23,700 INFO L226 Difference]: Without dead ends: 413 [2022-11-20 21:10:23,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-11-20 21:10:23,702 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 153 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 21:10:23,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 174 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 21:10:23,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2022-11-20 21:10:23,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 381. [2022-11-20 21:10:23,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 259 states have (on average 1.247104247104247) internal successors, (323), 288 states have internal predecessors, (323), 64 states have call successors, (64), 50 states have call predecessors, (64), 57 states have return successors, (118), 63 states have call predecessors, (118), 64 states have call successors, (118) [2022-11-20 21:10:23,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 505 transitions. [2022-11-20 21:10:23,809 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 505 transitions. Word has length 53 [2022-11-20 21:10:23,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:10:23,810 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 505 transitions. [2022-11-20 21:10:23,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 4 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-20 21:10:23,810 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 505 transitions. [2022-11-20 21:10:23,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-20 21:10:23,814 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:10:23,814 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:10:23,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 21:10:23,815 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:10:23,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:10:23,815 INFO L85 PathProgramCache]: Analyzing trace with hash 2137767215, now seen corresponding path program 1 times [2022-11-20 21:10:23,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:10:23,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545378970] [2022-11-20 21:10:23,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:10:23,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:10:23,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:10:23,994 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 21:10:23,995 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:10:23,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545378970] [2022-11-20 21:10:23,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545378970] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:10:23,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:10:23,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 21:10:23,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714020155] [2022-11-20 21:10:23,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:10:23,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 21:10:23,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:10:23,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 21:10:23,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 21:10:24,000 INFO L87 Difference]: Start difference. First operand 381 states and 505 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-20 21:10:24,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:10:24,146 INFO L93 Difference]: Finished difference Result 613 states and 831 transitions. [2022-11-20 21:10:24,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 21:10:24,147 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2022-11-20 21:10:24,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:10:24,151 INFO L225 Difference]: With dead ends: 613 [2022-11-20 21:10:24,151 INFO L226 Difference]: Without dead ends: 367 [2022-11-20 21:10:24,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 21:10:24,153 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 38 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 21:10:24,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 138 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 21:10:24,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-11-20 21:10:24,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 343. [2022-11-20 21:10:24,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 231 states have (on average 1.2337662337662338) internal successors, (285), 257 states have internal predecessors, (285), 59 states have call successors, (59), 46 states have call predecessors, (59), 52 states have return successors, (103), 56 states have call predecessors, (103), 59 states have call successors, (103) [2022-11-20 21:10:24,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 447 transitions. [2022-11-20 21:10:24,223 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 447 transitions. Word has length 56 [2022-11-20 21:10:24,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:10:24,223 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 447 transitions. [2022-11-20 21:10:24,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-20 21:10:24,224 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 447 transitions. [2022-11-20 21:10:24,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-20 21:10:24,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:10:24,227 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:10:24,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 21:10:24,227 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:10:24,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:10:24,228 INFO L85 PathProgramCache]: Analyzing trace with hash 815947914, now seen corresponding path program 1 times [2022-11-20 21:10:24,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:10:24,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647656953] [2022-11-20 21:10:24,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:10:24,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:10:24,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:10:24,406 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 21:10:24,407 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:10:24,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647656953] [2022-11-20 21:10:24,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647656953] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:10:24,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568377547] [2022-11-20 21:10:24,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:10:24,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:10:24,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b311c5-6ed2-4dbd-9cc9-719875b56a23/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:10:24,415 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b311c5-6ed2-4dbd-9cc9-719875b56a23/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:10:24,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b311c5-6ed2-4dbd-9cc9-719875b56a23/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 21:10:24,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:10:24,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 21:10:24,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:10:24,714 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:10:24,714 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:10:24,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568377547] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:10:24,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 21:10:24,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-20 21:10:24,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778760370] [2022-11-20 21:10:24,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:10:24,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 21:10:24,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:10:24,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 21:10:24,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 21:10:24,717 INFO L87 Difference]: Start difference. First operand 343 states and 447 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 21:10:24,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:10:24,827 INFO L93 Difference]: Finished difference Result 633 states and 831 transitions. [2022-11-20 21:10:24,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 21:10:24,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 61 [2022-11-20 21:10:24,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:10:24,830 INFO L225 Difference]: With dead ends: 633 [2022-11-20 21:10:24,831 INFO L226 Difference]: Without dead ends: 322 [2022-11-20 21:10:24,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 21:10:24,833 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 21 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:10:24,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 84 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 21:10:24,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-11-20 21:10:24,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2022-11-20 21:10:24,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 218 states have (on average 1.188073394495413) internal successors, (259), 242 states have internal predecessors, (259), 55 states have call successors, (55), 43 states have call predecessors, (55), 48 states have return successors, (75), 53 states have call predecessors, (75), 55 states have call successors, (75) [2022-11-20 21:10:24,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 389 transitions. [2022-11-20 21:10:24,893 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 389 transitions. Word has length 61 [2022-11-20 21:10:24,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:10:24,894 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 389 transitions. [2022-11-20 21:10:24,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 21:10:24,895 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 389 transitions. [2022-11-20 21:10:24,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-20 21:10:24,897 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:10:24,897 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:10:24,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b311c5-6ed2-4dbd-9cc9-719875b56a23/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 21:10:25,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b311c5-6ed2-4dbd-9cc9-719875b56a23/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-20 21:10:25,104 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:10:25,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:10:25,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1867995876, now seen corresponding path program 1 times [2022-11-20 21:10:25,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:10:25,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976821937] [2022-11-20 21:10:25,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:10:25,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:10:25,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:10:25,952 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 21:10:25,953 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:10:25,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976821937] [2022-11-20 21:10:25,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976821937] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:10:25,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099628628] [2022-11-20 21:10:25,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:10:25,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:10:25,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b311c5-6ed2-4dbd-9cc9-719875b56a23/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:10:25,955 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b311c5-6ed2-4dbd-9cc9-719875b56a23/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:10:25,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b311c5-6ed2-4dbd-9cc9-719875b56a23/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 21:10:26,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:10:26,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-20 21:10:26,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:10:26,594 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 21:10:26,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:10:27,239 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 21:10:27,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099628628] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:10:27,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [208373190] [2022-11-20 21:10:27,269 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2022-11-20 21:10:27,269 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:10:27,275 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:10:27,282 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:10:27,283 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:10:39,566 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 127 for LOIs [2022-11-20 21:10:39,591 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 31 for LOIs [2022-11-20 21:10:39,869 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 60 for LOIs [2022-11-20 21:10:40,142 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 23 for LOIs [2022-11-20 21:10:40,145 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 24 for LOIs [2022-11-20 21:10:40,149 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 36 for LOIs [2022-11-20 21:10:40,152 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:10:47,456 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7430#(and (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~8#1|) (= ~head~0.offset 0) (<= |timeShift_isPumpRunning_#res#1| 2147483647) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification2_spec__2_~tmp___0~0#1|) (= 1 ~systemActive~0) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~8#1|) (<= 0 ~methAndRunningLastTime~0) (<= 0 |old(~methAndRunningLastTime~0)|) (<= 0 ~methaneLevelCritical~0) (= ~head~0.base 0) (= |#NULL.offset| 0) (<= |timeShift___utac_acc__Specification2_spec__2_~tmp~1#1| 1) (<= 0 (+ |timeShift_isPumpRunning_#res#1| 2147483648)) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp___0~0#1| 0)) (not (= ~methAndRunningLastTime~0 0)) (<= 0 |#StackHeapBarrier|) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp~1#1| 0)) (= |timeShift___utac_acc__Specification2_spec__2_~tmp~1#1| ~methaneLevelCritical~0) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-20 21:10:47,456 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:10:47,456 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:10:47,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 26 [2022-11-20 21:10:47,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201093518] [2022-11-20 21:10:47,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 21:10:47,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-20 21:10:47,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:10:47,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-20 21:10:47,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=338, Invalid=2854, Unknown=0, NotChecked=0, Total=3192 [2022-11-20 21:10:47,461 INFO L87 Difference]: Start difference. First operand 322 states and 389 transitions. Second operand has 26 states, 23 states have (on average 4.086956521739131) internal successors, (94), 22 states have internal predecessors, (94), 10 states have call successors, (22), 11 states have call predecessors, (22), 10 states have return successors, (20), 8 states have call predecessors, (20), 9 states have call successors, (20) [2022-11-20 21:10:49,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:10:49,803 INFO L93 Difference]: Finished difference Result 1036 states and 1253 transitions. [2022-11-20 21:10:49,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-11-20 21:10:49,804 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 4.086956521739131) internal successors, (94), 22 states have internal predecessors, (94), 10 states have call successors, (22), 11 states have call predecessors, (22), 10 states have return successors, (20), 8 states have call predecessors, (20), 9 states have call successors, (20) Word has length 64 [2022-11-20 21:10:49,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:10:49,811 INFO L225 Difference]: With dead ends: 1036 [2022-11-20 21:10:49,811 INFO L226 Difference]: Without dead ends: 748 [2022-11-20 21:10:49,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 157 SyntacticMatches, 3 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2663 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=899, Invalid=6411, Unknown=0, NotChecked=0, Total=7310 [2022-11-20 21:10:49,815 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 680 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 1086 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 1086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:10:49,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [687 Valid, 544 Invalid, 1448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 1086 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 21:10:49,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2022-11-20 21:10:49,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 392. [2022-11-20 21:10:49,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 270 states have (on average 1.174074074074074) internal successors, (317), 291 states have internal predecessors, (317), 58 states have call successors, (58), 52 states have call predecessors, (58), 63 states have return successors, (75), 63 states have call predecessors, (75), 58 states have call successors, (75) [2022-11-20 21:10:49,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 450 transitions. [2022-11-20 21:10:49,886 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 450 transitions. Word has length 64 [2022-11-20 21:10:49,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:10:49,887 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 450 transitions. [2022-11-20 21:10:49,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 4.086956521739131) internal successors, (94), 22 states have internal predecessors, (94), 10 states have call successors, (22), 11 states have call predecessors, (22), 10 states have return successors, (20), 8 states have call predecessors, (20), 9 states have call successors, (20) [2022-11-20 21:10:49,887 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 450 transitions. [2022-11-20 21:10:49,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-20 21:10:49,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:10:49,890 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:10:49,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b311c5-6ed2-4dbd-9cc9-719875b56a23/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-20 21:10:50,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b311c5-6ed2-4dbd-9cc9-719875b56a23/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 21:10:50,097 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:10:50,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:10:50,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1259150818, now seen corresponding path program 1 times [2022-11-20 21:10:50,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:10:50,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838819733] [2022-11-20 21:10:50,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:10:50,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:10:50,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:10:50,783 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 33 proven. 28 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 21:10:50,783 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:10:50,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838819733] [2022-11-20 21:10:50,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838819733] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:10:50,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499883532] [2022-11-20 21:10:50,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:10:50,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:10:50,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b311c5-6ed2-4dbd-9cc9-719875b56a23/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:10:50,785 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b311c5-6ed2-4dbd-9cc9-719875b56a23/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:10:50,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b311c5-6ed2-4dbd-9cc9-719875b56a23/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 21:10:50,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:10:50,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-20 21:10:50,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:10:51,305 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 21:10:51,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:10:51,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499883532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:10:51,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 21:10:51,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [14] total 20 [2022-11-20 21:10:51,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205776692] [2022-11-20 21:10:51,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:10:51,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 21:10:51,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:10:51,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 21:10:51,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-11-20 21:10:51,309 INFO L87 Difference]: Start difference. First operand 392 states and 450 transitions. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 5 states have call successors, (10), 5 states have call predecessors, (10), 6 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-20 21:10:51,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:10:51,864 INFO L93 Difference]: Finished difference Result 911 states and 1087 transitions. [2022-11-20 21:10:51,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 21:10:51,865 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 5 states have call successors, (10), 5 states have call predecessors, (10), 6 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 89 [2022-11-20 21:10:51,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:10:51,869 INFO L225 Difference]: With dead ends: 911 [2022-11-20 21:10:51,869 INFO L226 Difference]: Without dead ends: 533 [2022-11-20 21:10:51,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2022-11-20 21:10:51,872 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 118 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 21:10:51,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 182 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 21:10:51,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2022-11-20 21:10:51,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 457. [2022-11-20 21:10:51,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 321 states have (on average 1.1713395638629283) internal successors, (376), 340 states have internal predecessors, (376), 68 states have call successors, (68), 64 states have call predecessors, (68), 67 states have return successors, (85), 69 states have call predecessors, (85), 68 states have call successors, (85) [2022-11-20 21:10:51,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 529 transitions. [2022-11-20 21:10:51,955 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 529 transitions. Word has length 89 [2022-11-20 21:10:51,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:10:51,956 INFO L495 AbstractCegarLoop]: Abstraction has 457 states and 529 transitions. [2022-11-20 21:10:51,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 5 states have call successors, (10), 5 states have call predecessors, (10), 6 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-20 21:10:51,957 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 529 transitions. [2022-11-20 21:10:51,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-20 21:10:51,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:10:51,959 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:10:51,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b311c5-6ed2-4dbd-9cc9-719875b56a23/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 21:10:52,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b311c5-6ed2-4dbd-9cc9-719875b56a23/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:10:52,167 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:10:52,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:10:52,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1930595331, now seen corresponding path program 1 times [2022-11-20 21:10:52,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:10:52,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546493506] [2022-11-20 21:10:52,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:10:52,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:10:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:10:53,459 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 55 proven. 51 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-20 21:10:53,459 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 21:10:53,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546493506] [2022-11-20 21:10:53,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546493506] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 21:10:53,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095591674] [2022-11-20 21:10:53,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:10:53,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:10:53,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b311c5-6ed2-4dbd-9cc9-719875b56a23/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:10:53,462 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b311c5-6ed2-4dbd-9cc9-719875b56a23/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 21:10:53,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b311c5-6ed2-4dbd-9cc9-719875b56a23/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 21:10:53,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:10:53,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-20 21:10:53,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:10:54,308 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 69 proven. 42 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 21:10:54,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 21:10:55,451 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 72 proven. 25 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-20 21:10:55,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095591674] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 21:10:55,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [254215086] [2022-11-20 21:10:55,455 INFO L159 IcfgInterpreter]: Started Sifa with 42 locations of interest [2022-11-20 21:10:55,456 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 21:10:55,456 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 21:10:55,456 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 21:10:55,457 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 21:11:02,726 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 47 for LOIs [2022-11-20 21:11:02,737 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 31 for LOIs [2022-11-20 21:11:03,014 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 60 for LOIs [2022-11-20 21:11:03,283 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 23 for LOIs [2022-11-20 21:11:03,285 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 24 for LOIs [2022-11-20 21:11:03,289 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 36 for LOIs [2022-11-20 21:11:03,291 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 21:11:08,940 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12850#(and (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~8#1|) (= ~head~0.offset 0) (<= |timeShift_isPumpRunning_#res#1| 2147483647) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification2_spec__2_~tmp___0~0#1|) (= 1 ~systemActive~0) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~8#1|) (<= 0 ~methAndRunningLastTime~0) (<= 0 |old(~methAndRunningLastTime~0)|) (<= 0 ~methaneLevelCritical~0) (= ~head~0.base 0) (= |#NULL.offset| 0) (<= |timeShift___utac_acc__Specification2_spec__2_~tmp~1#1| 1) (<= 0 (+ |timeShift_isPumpRunning_#res#1| 2147483648)) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp___0~0#1| 0)) (not (= ~methAndRunningLastTime~0 0)) (<= 0 |#StackHeapBarrier|) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp~1#1| 0)) (= |timeShift___utac_acc__Specification2_spec__2_~tmp~1#1| ~methaneLevelCritical~0) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-20 21:11:08,940 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 21:11:08,940 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 21:11:08,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 14, 14] total 37 [2022-11-20 21:11:08,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724614587] [2022-11-20 21:11:08,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 21:11:08,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-20 21:11:08,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 21:11:08,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-20 21:11:08,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=480, Invalid=3942, Unknown=0, NotChecked=0, Total=4422 [2022-11-20 21:11:08,945 INFO L87 Difference]: Start difference. First operand 457 states and 529 transitions. Second operand has 37 states, 35 states have (on average 4.6571428571428575) internal successors, (163), 35 states have internal predecessors, (163), 20 states have call successors, (33), 10 states have call predecessors, (33), 16 states have return successors, (36), 17 states have call predecessors, (36), 20 states have call successors, (36) [2022-11-20 21:11:10,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:11:10,584 INFO L93 Difference]: Finished difference Result 670 states and 786 transitions. [2022-11-20 21:11:10,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 21:11:10,585 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 35 states have (on average 4.6571428571428575) internal successors, (163), 35 states have internal predecessors, (163), 20 states have call successors, (33), 10 states have call predecessors, (33), 16 states have return successors, (36), 17 states have call predecessors, (36), 20 states have call successors, (36) Word has length 109 [2022-11-20 21:11:10,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:11:10,586 INFO L225 Difference]: With dead ends: 670 [2022-11-20 21:11:10,586 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 21:11:10,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 280 SyntacticMatches, 7 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2708 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=840, Invalid=5966, Unknown=0, NotChecked=0, Total=6806 [2022-11-20 21:11:10,590 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 665 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 402 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 1024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 402 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 21:11:10,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [665 Valid, 355 Invalid, 1024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [402 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 21:11:10,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 21:11:10,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 21:11:10,591 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) [2022-11-20 21:11:10,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 21:11:10,592 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 109 [2022-11-20 21:11:10,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:11:10,592 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 21:11:10,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 35 states have (on average 4.6571428571428575) internal successors, (163), 35 states have internal predecessors, (163), 20 states have call successors, (33), 10 states have call predecessors, (33), 16 states have return successors, (36), 17 states have call predecessors, (36), 20 states have call successors, (36) [2022-11-20 21:11:10,593 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 21:11:10,593 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 21:11:10,596 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 21:11:10,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b311c5-6ed2-4dbd-9cc9-719875b56a23/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 21:11:10,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b311c5-6ed2-4dbd-9cc9-719875b56a23/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 21:11:10,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 21:11:17,101 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 371 377) no Hoare annotation was computed. [2022-11-20 21:11:17,102 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 371 377) the Hoare annotation is: true [2022-11-20 21:11:17,102 INFO L902 garLoopResultBuilder]: At program point changeMethaneLevelENTRY(lines 264 275) the Hoare annotation is: true [2022-11-20 21:11:17,102 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 264 275) no Hoare annotation was computed. [2022-11-20 21:11:17,102 INFO L902 garLoopResultBuilder]: At program point isMethaneLevelCriticalENTRY(lines 276 284) the Hoare annotation is: true [2022-11-20 21:11:17,102 INFO L899 garLoopResultBuilder]: For program point isMethaneLevelCriticalEXIT(lines 276 284) no Hoare annotation was computed. [2022-11-20 21:11:17,103 INFO L895 garLoopResultBuilder]: At program point L209(line 209) the Hoare annotation is: (let ((.cse8 (not (= |old(~waterLevel~0)| 1))) (.cse2 (not (= ~methaneLevelCritical~0 0))) (.cse3 (not (= |old(~pumpRunning~0)| 1))) (.cse5 (not (<= |old(~waterLevel~0)| 2))) (.cse9 (= ~pumpRunning~0 0)) (.cse10 (= ~waterLevel~0 1)) (.cse6 (not (<= 2 |old(~waterLevel~0)|))) (.cse7 (not (= |old(~pumpRunning~0)| 0))) (.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse1 (= ~methAndRunningLastTime~0 0)) (.cse4 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6) (or .cse7 .cse0 .cse8 (and .cse9 .cse10) .cse4) (or .cse7 .cse0 .cse1 .cse8 .cse2 .cse4) (or .cse3 .cse4 .cse5 (and .cse9 (<= 1 |timeShift_processEnvironment_~tmp~3#1|) .cse10) .cse6) (or .cse7 .cse0 (and .cse1 (<= ~waterLevel~0 |old(~waterLevel~0)|) (<= |old(~waterLevel~0)| ~waterLevel~0) (= ~pumpRunning~0 1)) (not (= |old(~waterLevel~0)| 2)) .cse4))) [2022-11-20 21:11:17,103 INFO L899 garLoopResultBuilder]: For program point L209-1(line 209) no Hoare annotation was computed. [2022-11-20 21:11:17,103 INFO L895 garLoopResultBuilder]: At program point L424(line 424) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse3 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse1 (= ~pumpRunning~0 0)) (.cse2 (= ~methAndRunningLastTime~0 0)) (.cse4 (= 0 ~systemActive~0))) (and (or .cse0 (and .cse1 .cse2 (= ~waterLevel~0 1)) .cse3 (not (= |old(~waterLevel~0)| 1)) .cse4) (or (not (= |old(~pumpRunning~0)| 1)) .cse4 (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))) (or .cse0 .cse3 (and .cse1 .cse2 (= |old(~waterLevel~0)| ~waterLevel~0)) (not (= |old(~waterLevel~0)| 2)) .cse4))) [2022-11-20 21:11:17,103 INFO L895 garLoopResultBuilder]: At program point L424-1(lines 405 429) the Hoare annotation is: (let ((.cse8 (not (= |old(~waterLevel~0)| 1))) (.cse2 (not (= ~methaneLevelCritical~0 0))) (.cse3 (not (= |old(~pumpRunning~0)| 1))) (.cse5 (not (<= |old(~waterLevel~0)| 2))) (.cse9 (= ~pumpRunning~0 0)) (.cse10 (= ~waterLevel~0 1)) (.cse6 (not (<= 2 |old(~waterLevel~0)|))) (.cse7 (not (= |old(~pumpRunning~0)| 0))) (.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse1 (= ~methAndRunningLastTime~0 0)) (.cse4 (= 0 ~systemActive~0))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6) (or .cse7 .cse0 .cse8 (and .cse9 .cse10) .cse4) (or .cse7 .cse0 .cse1 .cse8 .cse2 .cse4) (or .cse3 .cse4 .cse5 (and .cse9 (<= 1 |timeShift_processEnvironment_~tmp~3#1|) .cse10) .cse6) (or .cse7 .cse0 (and .cse1 (<= ~waterLevel~0 |old(~waterLevel~0)|) (<= |old(~waterLevel~0)| ~waterLevel~0) (= ~pumpRunning~0 1)) (not (= |old(~waterLevel~0)| 2)) .cse4))) [2022-11-20 21:11:17,103 INFO L899 garLoopResultBuilder]: For program point L358-1(lines 358 364) no Hoare annotation was computed. [2022-11-20 21:11:17,104 INFO L895 garLoopResultBuilder]: At program point L986(line 986) the Hoare annotation is: (let ((.cse1 (not (= |old(~pumpRunning~0)| 0))) (.cse2 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse0 (= 0 ~systemActive~0))) (and (or (not (= |old(~pumpRunning~0)| 1)) .cse0 (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))) (or .cse1 .cse2 (not (= |old(~waterLevel~0)| 2)) .cse0) (or .cse1 .cse2 (not (= |old(~waterLevel~0)| 1)) .cse0))) [2022-11-20 21:11:17,104 INFO L899 garLoopResultBuilder]: For program point L351-1(lines 350 369) no Hoare annotation was computed. [2022-11-20 21:11:17,104 INFO L895 garLoopResultBuilder]: At program point L413(lines 413 421) the Hoare annotation is: (let ((.cse1 (not (= |old(~pumpRunning~0)| 1))) (.cse3 (not (<= |old(~waterLevel~0)| 2))) (.cse4 (not (<= 2 |old(~waterLevel~0)|))) (.cse5 (not (= |old(~pumpRunning~0)| 0))) (.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse2 (= 0 ~systemActive~0))) (and (or .cse0 (= ~methAndRunningLastTime~0 0) (not (= ~methaneLevelCritical~0 0)) .cse1 .cse2 .cse3 .cse4) (or .cse1 (and (<= 1 |timeShift_processEnvironment_~tmp~3#1|) (= ~waterLevel~0 1) (= ~pumpRunning~0 1)) .cse2 .cse3 .cse4) (or .cse5 .cse0 (not (= |old(~waterLevel~0)| 2)) .cse2) (or .cse5 .cse0 (not (= |old(~waterLevel~0)| 1)) .cse2))) [2022-11-20 21:11:17,104 INFO L895 garLoopResultBuilder]: At program point L409(lines 409 426) the Hoare annotation is: (let ((.cse6 (not (= |old(~pumpRunning~0)| 0))) (.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse7 (= ~pumpRunning~0 0)) (.cse1 (= ~methAndRunningLastTime~0 0)) (.cse8 (= ~waterLevel~0 1)) (.cse2 (not (= |old(~pumpRunning~0)| 1))) (.cse3 (= 0 ~systemActive~0)) (.cse4 (not (<= |old(~waterLevel~0)| 2))) (.cse5 (not (<= 2 |old(~waterLevel~0)|)))) (and (or .cse0 .cse1 (not (= ~methaneLevelCritical~0 0)) .cse2 .cse3 .cse4 .cse5) (or .cse6 (and .cse7 .cse1 .cse8) .cse0 (not (= |old(~waterLevel~0)| 1)) .cse3) (or .cse6 .cse0 (and .cse7 .cse1 (= |old(~waterLevel~0)| ~waterLevel~0)) (not (= |old(~waterLevel~0)| 2)) .cse3) (or (and .cse8 (= ~pumpRunning~0 1)) .cse2 .cse3 .cse4 .cse5))) [2022-11-20 21:11:17,104 INFO L899 garLoopResultBuilder]: For program point L215(lines 215 225) no Hoare annotation was computed. [2022-11-20 21:11:17,105 INFO L895 garLoopResultBuilder]: At program point L211(lines 211 228) the Hoare annotation is: (let ((.cse11 (= ~methAndRunningLastTime~0 0)) (.cse12 (= |timeShift___utac_acc__Specification2_spec__2_~tmp~1#1| 0))) (let ((.cse8 (not (= |old(~waterLevel~0)| 1))) (.cse1 (and .cse11 .cse12)) (.cse3 (not (= |old(~pumpRunning~0)| 1))) (.cse9 (= ~pumpRunning~0 0)) (.cse10 (= ~waterLevel~0 1)) (.cse6 (not (<= 2 |old(~waterLevel~0)|))) (.cse7 (not (= |old(~pumpRunning~0)| 0))) (.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse2 (not (= ~methaneLevelCritical~0 0))) (.cse4 (= 0 ~systemActive~0)) (.cse5 (not (<= |old(~waterLevel~0)| 2)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6) (or .cse7 .cse0 .cse8 (and .cse9 .cse10) .cse4) (or .cse7 .cse0 .cse8 .cse1 .cse2 .cse4) (or .cse3 .cse4 .cse5 (and .cse9 (<= 1 |timeShift_processEnvironment_~tmp~3#1|) .cse10) .cse6) (or .cse7 .cse0 (and .cse11 (<= ~waterLevel~0 |old(~waterLevel~0)|) (<= |old(~waterLevel~0)| ~waterLevel~0) (= ~pumpRunning~0 1)) (not (= |old(~waterLevel~0)| 2)) .cse4) (or .cse7 .cse0 (< |old(~waterLevel~0)| 2) .cse2 .cse4 .cse5 .cse12)))) [2022-11-20 21:11:17,105 INFO L895 garLoopResultBuilder]: At program point L211-1(lines 203 231) the Hoare annotation is: (let ((.cse2 (not (= |old(~pumpRunning~0)| 1))) (.cse6 (not (<= 2 |old(~waterLevel~0)|))) (.cse7 (= ~pumpRunning~0 0)) (.cse9 (= ~waterLevel~0 1)) (.cse8 (= ~methAndRunningLastTime~0 0)) (.cse4 (not (<= |old(~waterLevel~0)| 2))) (.cse10 (not (= |old(~pumpRunning~0)| 0))) (.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse11 (not (= |old(~waterLevel~0)| 1))) (.cse1 (not (= ~methaneLevelCritical~0 0))) (.cse3 (= 0 ~systemActive~0)) (.cse5 (= |timeShift___utac_acc__Specification2_spec__2_~tmp~1#1| 0))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6) (or .cse2 .cse3 .cse4 (and .cse7 .cse8 (<= 1 |timeShift_processEnvironment_~tmp~3#1|) .cse9) .cse6) (or .cse10 (and .cse7 .cse8 .cse9) .cse0 .cse11 .cse3) (or .cse10 .cse0 (and .cse8 .cse5) (< |old(~waterLevel~0)| 2) .cse1 .cse3 .cse4) (or .cse10 .cse0 (and (<= ~waterLevel~0 |old(~waterLevel~0)|) (<= |old(~waterLevel~0)| ~waterLevel~0) (= ~pumpRunning~0 1)) (not (= |old(~waterLevel~0)| 2)) .cse3) (or .cse10 .cse0 .cse11 .cse1 .cse3 .cse5))) [2022-11-20 21:11:17,105 INFO L899 garLoopResultBuilder]: For program point L216(lines 216 222) no Hoare annotation was computed. [2022-11-20 21:11:17,106 INFO L895 garLoopResultBuilder]: At program point timeShiftENTRY(lines 347 370) the Hoare annotation is: (let ((.cse5 (= 0 ~systemActive~0))) (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse2 (= ~pumpRunning~0 0)) (.cse3 (= ~methAndRunningLastTime~0 0)) (.cse4 (not .cse5)) (.cse6 (not (= |old(~pumpRunning~0)| 1))) (.cse7 (not (<= |old(~waterLevel~0)| 2))) (.cse8 (not (<= 2 |old(~waterLevel~0)|)))) (and (or .cse0 .cse1 (not (= |old(~waterLevel~0)| 1)) (and .cse2 .cse3 (= ~waterLevel~0 1) .cse4) .cse5) (or .cse1 .cse3 (not (= ~methaneLevelCritical~0 0)) .cse6 .cse5 .cse7 .cse8) (or .cse0 .cse1 (not (= |old(~waterLevel~0)| 2)) (and .cse2 .cse3 (= |old(~waterLevel~0)| ~waterLevel~0) .cse4) .cse5) (or .cse6 (and (<= ~waterLevel~0 |old(~waterLevel~0)|) (<= |old(~waterLevel~0)| ~waterLevel~0) (= ~pumpRunning~0 1)) .cse5 .cse7 .cse8)))) [2022-11-20 21:11:17,106 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 347 370) no Hoare annotation was computed. [2022-11-20 21:11:17,106 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 986) no Hoare annotation was computed. [2022-11-20 21:11:17,106 INFO L895 garLoopResultBuilder]: At program point L419(line 419) the Hoare annotation is: (let ((.cse1 (not (= |old(~pumpRunning~0)| 0))) (.cse2 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse0 (= 0 ~systemActive~0))) (and (or (not (= |old(~pumpRunning~0)| 1)) .cse0 (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))) (or .cse1 .cse2 (not (= |old(~waterLevel~0)| 2)) .cse0) (or .cse1 .cse2 (not (= |old(~waterLevel~0)| 1)) .cse0))) [2022-11-20 21:11:17,106 INFO L902 garLoopResultBuilder]: At program point L96(line 96) the Hoare annotation is: true [2022-11-20 21:11:17,106 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 90 119) no Hoare annotation was computed. [2022-11-20 21:11:17,106 INFO L899 garLoopResultBuilder]: For program point L96-1(line 96) no Hoare annotation was computed. [2022-11-20 21:11:17,107 INFO L902 garLoopResultBuilder]: At program point cleanupENTRY(lines 90 119) the Hoare annotation is: true [2022-11-20 21:11:17,107 INFO L902 garLoopResultBuilder]: At program point L115(lines 90 119) the Hoare annotation is: true [2022-11-20 21:11:17,110 INFO L899 garLoopResultBuilder]: For program point L111(line 111) no Hoare annotation was computed. [2022-11-20 21:11:17,111 INFO L899 garLoopResultBuilder]: For program point L104(lines 104 108) no Hoare annotation was computed. [2022-11-20 21:11:17,111 INFO L902 garLoopResultBuilder]: At program point L104-1(lines 104 108) the Hoare annotation is: true [2022-11-20 21:11:17,111 INFO L902 garLoopResultBuilder]: At program point L100-2(lines 100 114) the Hoare annotation is: true [2022-11-20 21:11:17,112 INFO L895 garLoopResultBuilder]: At program point L597-2(lines 589 602) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~tmp~0#1| ~systemActive~0)) (.cse3 (= ~pumpRunning~0 0)) (.cse4 (= ~methAndRunningLastTime~0 0)) (.cse1 (= |ULTIMATE.start_main_~tmp~0#1| 1)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 (<= 2 ~waterLevel~0) .cse2 (<= ~waterLevel~0 2) (= ~pumpRunning~0 1)) (and .cse0 .cse3 .cse4 (= 2 ~waterLevel~0) .cse1 .cse2) (and .cse0 .cse3 .cse4 .cse1 .cse2 (= ~waterLevel~0 1)))) [2022-11-20 21:11:17,112 INFO L899 garLoopResultBuilder]: For program point L560(lines 559 606) no Hoare annotation was computed. [2022-11-20 21:11:17,112 INFO L895 garLoopResultBuilder]: At program point L581(line 581) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~tmp~0#1| ~systemActive~0)) (.cse3 (= ~pumpRunning~0 0)) (.cse4 (= ~methAndRunningLastTime~0 0)) (.cse1 (= |ULTIMATE.start_main_~tmp~0#1| 1)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 (= 2 ~waterLevel~0) .cse1 .cse2 (= ~pumpRunning~0 1)) (and .cse0 .cse3 .cse4 .cse1 .cse2 (= ~waterLevel~0 1)) (and .cse0 .cse3 .cse4 .cse1 (<= 2 ~waterLevel~0) .cse2 (<= ~waterLevel~0 2)))) [2022-11-20 21:11:17,112 INFO L902 garLoopResultBuilder]: At program point L610(lines 549 614) the Hoare annotation is: true [2022-11-20 21:11:17,112 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-11-20 21:11:17,113 INFO L899 garLoopResultBuilder]: For program point L569(lines 569 575) no Hoare annotation was computed. [2022-11-20 21:11:17,113 INFO L899 garLoopResultBuilder]: For program point L569-1(lines 569 575) no Hoare annotation was computed. [2022-11-20 21:11:17,113 INFO L895 garLoopResultBuilder]: At program point L177(lines 177 184) the Hoare annotation is: (and (= |ULTIMATE.start_main_~tmp~0#1| ~systemActive~0) (= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) (= ~methaneLevelCritical~0 0) (= |ULTIMATE.start_main_~tmp~0#1| 1) (= ~waterLevel~0 1)) [2022-11-20 21:11:17,113 INFO L902 garLoopResultBuilder]: At program point L177-2(lines 177 184) the Hoare annotation is: true [2022-11-20 21:11:17,113 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 21:11:17,114 INFO L895 garLoopResultBuilder]: At program point L607(lines 558 608) the Hoare annotation is: false [2022-11-20 21:11:17,114 INFO L899 garLoopResultBuilder]: For program point L579(lines 579 585) no Hoare annotation was computed. [2022-11-20 21:11:17,114 INFO L895 garLoopResultBuilder]: At program point L579-1(lines 579 585) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~tmp~0#1| ~systemActive~0)) (.cse3 (= ~pumpRunning~0 0)) (.cse4 (= ~methAndRunningLastTime~0 0)) (.cse1 (= |ULTIMATE.start_main_~tmp~0#1| 1)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 (<= 2 ~waterLevel~0) .cse2 (<= ~waterLevel~0 2) (= ~pumpRunning~0 1)) (and .cse0 .cse3 .cse4 (= 2 ~waterLevel~0) .cse1 .cse2) (and .cse0 .cse3 .cse4 .cse1 .cse2 (= ~waterLevel~0 1)))) [2022-11-20 21:11:17,114 INFO L895 garLoopResultBuilder]: At program point L604(lines 559 606) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~tmp~0#1| ~systemActive~0)) (.cse1 (= |ULTIMATE.start_main_~tmp~0#1| 1)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 (<= 2 ~waterLevel~0) .cse2 (<= ~waterLevel~0 2) (= ~pumpRunning~0 1)) (and .cse0 (= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) .cse1 .cse2 (= ~waterLevel~0 1)))) [2022-11-20 21:11:17,115 INFO L895 garLoopResultBuilder]: At program point L571(line 571) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~tmp~0#1| ~systemActive~0)) (.cse1 (= |ULTIMATE.start_main_~tmp~0#1| 1)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 (<= 2 ~waterLevel~0) .cse2 (<= ~waterLevel~0 2) (= ~pumpRunning~0 1)) (and .cse0 (= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) .cse1 .cse2 (= ~waterLevel~0 1)))) [2022-11-20 21:11:17,115 INFO L895 garLoopResultBuilder]: At program point processEnvironment__wrappee__highWaterSensorENTRY(lines 379 403) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= ~pumpRunning~0 0)) (.cse2 (= 0 ~systemActive~0)) (.cse3 (not (= ~methAndRunningLastTime~0 0)))) (and (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse2 .cse3) (or .cse0 .cse1 (not (<= ~waterLevel~0 2)) (< ~waterLevel~0 2) .cse2 .cse3))) [2022-11-20 21:11:17,115 INFO L895 garLoopResultBuilder]: At program point L393(line 393) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= 0 ~systemActive~0)) (.cse2 (not (= ~methAndRunningLastTime~0 0)))) (and (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse2 (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~2#1| 0))) (or .cse0 (not (<= ~waterLevel~0 2)) (< ~waterLevel~0 2) .cse1 .cse2))) [2022-11-20 21:11:17,116 INFO L895 garLoopResultBuilder]: At program point L387(lines 387 395) the Hoare annotation is: (let ((.cse1 (not (= |old(~pumpRunning~0)| 0))) (.cse0 (or (= ~pumpRunning~0 0) (not (< 0 ~waterLevel~0)))) (.cse2 (= 0 ~systemActive~0)) (.cse3 (not (= ~methAndRunningLastTime~0 0)))) (and (or (and (= |processEnvironment__wrappee__highWaterSensor_~tmp~2#1| 1) .cse0) .cse1 (not (<= ~waterLevel~0 2)) (< ~waterLevel~0 2) .cse2 .cse3) (or (not (= ~waterLevel~0 1)) .cse1 (and (= |processEnvironment__wrappee__highWaterSensor_~tmp~2#1| 0) .cse0) .cse2 .cse3))) [2022-11-20 21:11:17,116 INFO L895 garLoopResultBuilder]: At program point L383(lines 383 400) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= ~pumpRunning~0 0)) (.cse2 (= 0 ~systemActive~0)) (.cse3 (not (= ~methAndRunningLastTime~0 0)))) (and (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse2 .cse3) (or .cse0 .cse1 (not (<= ~waterLevel~0 2)) (< ~waterLevel~0 2) .cse2 .cse3))) [2022-11-20 21:11:17,116 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 379 403) no Hoare annotation was computed. [2022-11-20 21:11:17,116 INFO L895 garLoopResultBuilder]: At program point L398(line 398) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= 0 ~systemActive~0)) (.cse2 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 (not (<= ~waterLevel~0 2)) (< ~waterLevel~0 2) .cse1 .cse2) (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse2))) [2022-11-20 21:11:17,116 INFO L899 garLoopResultBuilder]: For program point L398-1(lines 379 403) no Hoare annotation was computed. [2022-11-20 21:11:17,117 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 252 263) no Hoare annotation was computed. [2022-11-20 21:11:17,117 INFO L895 garLoopResultBuilder]: At program point waterRiseENTRY(lines 252 263) the Hoare annotation is: (let ((.cse0 (= 0 ~systemActive~0))) (and (or (not (= ~pumpRunning~0 0)) (not (= |old(~waterLevel~0)| 1)) .cse0 (= ~waterLevel~0 1) (not (= ~methAndRunningLastTime~0 0))) (or (not (= ~pumpRunning~0 1)) .cse0 (not (<= |old(~waterLevel~0)| 2)) (and (<= ~waterLevel~0 |old(~waterLevel~0)|) (<= |old(~waterLevel~0)| ~waterLevel~0)) (not (<= 2 |old(~waterLevel~0)|))))) [2022-11-20 21:11:17,122 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:11:17,125 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 21:11:17,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 09:11:17 BoogieIcfgContainer [2022-11-20 21:11:17,184 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 21:11:17,186 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 21:11:17,191 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 21:11:17,191 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 21:11:17,192 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:10:20" (3/4) ... [2022-11-20 21:11:17,196 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 21:11:17,203 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2022-11-20 21:11:17,203 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2022-11-20 21:11:17,204 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2022-11-20 21:11:17,204 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2022-11-20 21:11:17,204 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2022-11-20 21:11:17,204 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2022-11-20 21:11:17,205 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2022-11-20 21:11:17,224 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 47 nodes and edges [2022-11-20 21:11:17,225 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-11-20 21:11:17,226 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-20 21:11:17,226 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 21:11:17,227 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 21:11:17,262 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || (((pumpRunning == 0 && methAndRunningLastTime == 0) && waterLevel == 1) && !(0 == systemActive))) || 0 == systemActive) && ((((((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(methaneLevelCritical == 0)) || !(\old(pumpRunning) == 1)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 2)) || (((pumpRunning == 0 && methAndRunningLastTime == 0) && \old(waterLevel) == waterLevel) && !(0 == systemActive))) || 0 == systemActive)) && ((((!(\old(pumpRunning) == 1) || ((waterLevel <= \old(waterLevel) && \old(waterLevel) <= waterLevel) && pumpRunning == 1)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) [2022-11-20 21:11:17,264 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(methaneLevelCritical == 0)) || !(\old(pumpRunning) == 1)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && ((((!(\old(pumpRunning) == 0) || ((pumpRunning == 0 && methAndRunningLastTime == 0) && waterLevel == 1)) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || 0 == systemActive)) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || ((pumpRunning == 0 && methAndRunningLastTime == 0) && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) == 2)) || 0 == systemActive)) && (((((waterLevel == 1 && pumpRunning == 1) || !(\old(pumpRunning) == 1)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) [2022-11-20 21:11:17,264 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(methaneLevelCritical == 0)) || !(\old(pumpRunning) == 1)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || (pumpRunning == 0 && waterLevel == 1)) || 0 == systemActive)) && (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || methAndRunningLastTime == 0) || !(\old(waterLevel) == 1)) || !(methaneLevelCritical == 0)) || 0 == systemActive)) && ((((!(\old(pumpRunning) == 1) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || ((pumpRunning == 0 && 1 <= tmp) && waterLevel == 1)) || !(2 <= \old(waterLevel)))) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || (((methAndRunningLastTime == 0 && waterLevel <= \old(waterLevel)) && \old(waterLevel) <= waterLevel) && pumpRunning == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive) [2022-11-20 21:11:17,265 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || pumpRunning == 0) || 0 == systemActive) || !(methAndRunningLastTime == 0)) && (((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(waterLevel <= 2)) || waterLevel < 2) || 0 == systemActive) || !(methAndRunningLastTime == 0)) [2022-11-20 21:11:17,267 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((!(\old(methAndRunningLastTime) == 0) || (methAndRunningLastTime == 0 && tmp == 0)) || !(methaneLevelCritical == 0)) || !(\old(pumpRunning) == 1)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || (pumpRunning == 0 && waterLevel == 1)) || 0 == systemActive)) && (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || (methAndRunningLastTime == 0 && tmp == 0)) || !(methaneLevelCritical == 0)) || 0 == systemActive)) && ((((!(\old(pumpRunning) == 1) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || ((pumpRunning == 0 && 1 <= tmp) && waterLevel == 1)) || !(2 <= \old(waterLevel)))) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || (((methAndRunningLastTime == 0 && waterLevel <= \old(waterLevel)) && \old(waterLevel) <= waterLevel) && pumpRunning == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive)) && ((((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || \old(waterLevel) < 2) || !(methaneLevelCritical == 0)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || tmp == 0) [2022-11-20 21:11:17,267 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((!(\old(methAndRunningLastTime) == 0) || !(methaneLevelCritical == 0)) || !(\old(pumpRunning) == 1)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || tmp == 0) || !(2 <= \old(waterLevel))) && ((((!(\old(pumpRunning) == 1) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || (((pumpRunning == 0 && methAndRunningLastTime == 0) && 1 <= tmp) && waterLevel == 1)) || !(2 <= \old(waterLevel)))) && ((((!(\old(pumpRunning) == 0) || ((pumpRunning == 0 && methAndRunningLastTime == 0) && waterLevel == 1)) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || 0 == systemActive)) && ((((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || (methAndRunningLastTime == 0 && tmp == 0)) || \old(waterLevel) < 2) || !(methaneLevelCritical == 0)) || 0 == systemActive) || !(\old(waterLevel) <= 2))) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || ((waterLevel <= \old(waterLevel) && \old(waterLevel) <= waterLevel) && pumpRunning == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive)) && (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(methaneLevelCritical == 0)) || 0 == systemActive) || tmp == 0) [2022-11-20 21:11:17,268 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!(\old(pumpRunning) == 1) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 2)) || 0 == systemActive)) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || 0 == systemActive) [2022-11-20 21:11:17,269 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(methaneLevelCritical == 0)) || !(\old(pumpRunning) == 1)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && ((((!(\old(pumpRunning) == 1) || ((1 <= tmp && waterLevel == 1) && pumpRunning == 1)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 2)) || 0 == systemActive)) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || 0 == systemActive) [2022-11-20 21:11:17,272 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((tmp == 1 && (pumpRunning == 0 || !(0 < waterLevel))) || !(\old(pumpRunning) == 0)) || !(waterLevel <= 2)) || waterLevel < 2) || 0 == systemActive) || !(methAndRunningLastTime == 0)) && ((((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || (tmp == 0 && (pumpRunning == 0 || !(0 < waterLevel)))) || 0 == systemActive) || !(methAndRunningLastTime == 0)) [2022-11-20 21:11:17,333 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b311c5-6ed2-4dbd-9cc9-719875b56a23/bin/utaipan-6cKwYrpEi9/witness.graphml [2022-11-20 21:11:17,334 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 21:11:17,334 INFO L158 Benchmark]: Toolchain (without parser) took 58726.08ms. Allocated memory was 165.7MB in the beginning and 721.4MB in the end (delta: 555.7MB). Free memory was 120.5MB in the beginning and 476.1MB in the end (delta: -355.6MB). Peak memory consumption was 202.1MB. Max. memory is 16.1GB. [2022-11-20 21:11:17,335 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 123.7MB. Free memory was 100.1MB in the beginning and 100.0MB in the end (delta: 144.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 21:11:17,335 INFO L158 Benchmark]: CACSL2BoogieTranslator took 535.31ms. Allocated memory is still 165.7MB. Free memory was 120.5MB in the beginning and 101.6MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-20 21:11:17,336 INFO L158 Benchmark]: Boogie Procedure Inliner took 82.90ms. Allocated memory is still 165.7MB. Free memory was 101.6MB in the beginning and 99.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 21:11:17,337 INFO L158 Benchmark]: Boogie Preprocessor took 70.11ms. Allocated memory is still 165.7MB. Free memory was 99.5MB in the beginning and 97.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 21:11:17,337 INFO L158 Benchmark]: RCFGBuilder took 903.04ms. Allocated memory is still 165.7MB. Free memory was 97.9MB in the beginning and 131.1MB in the end (delta: -33.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-20 21:11:17,338 INFO L158 Benchmark]: TraceAbstraction took 56978.99ms. Allocated memory was 165.7MB in the beginning and 721.4MB in the end (delta: 555.7MB). Free memory was 130.3MB in the beginning and 481.3MB in the end (delta: -351.0MB). Peak memory consumption was 433.5MB. Max. memory is 16.1GB. [2022-11-20 21:11:17,339 INFO L158 Benchmark]: Witness Printer took 147.83ms. Allocated memory is still 721.4MB. Free memory was 481.3MB in the beginning and 476.1MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-20 21:11:17,342 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 123.7MB. Free memory was 100.1MB in the beginning and 100.0MB in the end (delta: 144.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 535.31ms. Allocated memory is still 165.7MB. Free memory was 120.5MB in the beginning and 101.6MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 82.90ms. Allocated memory is still 165.7MB. Free memory was 101.6MB in the beginning and 99.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.11ms. Allocated memory is still 165.7MB. Free memory was 99.5MB in the beginning and 97.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 903.04ms. Allocated memory is still 165.7MB. Free memory was 97.9MB in the beginning and 131.1MB in the end (delta: -33.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 56978.99ms. Allocated memory was 165.7MB in the beginning and 721.4MB in the end (delta: 555.7MB). Free memory was 130.3MB in the beginning and 481.3MB in the end (delta: -351.0MB). Peak memory consumption was 433.5MB. Max. memory is 16.1GB. * Witness Printer took 147.83ms. Allocated memory is still 721.4MB. Free memory was 481.3MB in the beginning and 476.1MB in the end (delta: 5.2MB). 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: 986]: 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 8 procedures, 56 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 56.8s, OverallIterations: 12, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 6.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 6.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1846 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1817 mSDsluCounter, 2022 SdHoareTripleChecker+Invalid, 2.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1442 mSDsCounter, 930 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2577 IncrementalHoareTripleChecker+Invalid, 3507 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 930 mSolverCounterUnsat, 580 mSDtfsCounter, 2577 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 837 GetRequests, 609 SyntacticMatches, 10 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5510 ImplicationChecksByTransitivity, 16.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=457occurred in iteration=11, InterpolantAutomatonStates: 115, 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, 494 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 34 LocationsWithAnnotation, 1378 PreInvPairs, 1460 NumberOfFragments, 1602 HoareAnnotationTreeSize, 1378 FomulaSimplifications, 3324 FormulaSimplificationTreeSizeReduction, 0.6s HoareSimplificationTime, 34 FomulaSimplificationsInter, 26535 FormulaSimplificationTreeSizeReductionInter, 5.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 7.8s InterpolantComputationTime, 907 NumberOfCodeBlocks, 907 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1062 ConstructedInterpolants, 0 QuantifiedInterpolants, 3734 SizeOfPredicates, 41 NumberOfNonLiveVariables, 1449 ConjunctsInSsa, 103 ConjunctsInUnsatCore, 18 InterpolantComputations, 10 PerfectInterpolantSequences, 525/694 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: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 177]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 409]: Loop Invariant Derived loop invariant: ((((((((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(methaneLevelCritical == 0)) || !(\old(pumpRunning) == 1)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && ((((!(\old(pumpRunning) == 0) || ((pumpRunning == 0 && methAndRunningLastTime == 0) && waterLevel == 1)) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || 0 == systemActive)) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || ((pumpRunning == 0 && methAndRunningLastTime == 0) && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) == 2)) || 0 == systemActive)) && (((((waterLevel == 1 && pumpRunning == 1) || !(\old(pumpRunning) == 1)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 387]: Loop Invariant Derived loop invariant: ((((((tmp == 1 && (pumpRunning == 0 || !(0 < waterLevel))) || !(\old(pumpRunning) == 0)) || !(waterLevel <= 2)) || waterLevel < 2) || 0 == systemActive) || !(methAndRunningLastTime == 0)) && ((((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || (tmp == 0 && (pumpRunning == 0 || !(0 < waterLevel)))) || 0 == systemActive) || !(methAndRunningLastTime == 0)) - InvariantResult [Line: 549]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 177]: Loop Invariant Derived loop invariant: ((((tmp == systemActive && pumpRunning == 0) && methAndRunningLastTime == 0) && methaneLevelCritical == 0) && tmp == 1) && waterLevel == 1 - InvariantResult [Line: 90]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 347]: Loop Invariant Derived loop invariant: ((((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || (((pumpRunning == 0 && methAndRunningLastTime == 0) && waterLevel == 1) && !(0 == systemActive))) || 0 == systemActive) && ((((((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(methaneLevelCritical == 0)) || !(\old(pumpRunning) == 1)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 2)) || (((pumpRunning == 0 && methAndRunningLastTime == 0) && \old(waterLevel) == waterLevel) && !(0 == systemActive))) || 0 == systemActive)) && ((((!(\old(pumpRunning) == 1) || ((waterLevel <= \old(waterLevel) && \old(waterLevel) <= waterLevel) && pumpRunning == 1)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 203]: Loop Invariant Derived loop invariant: ((((((((((!(\old(methAndRunningLastTime) == 0) || !(methaneLevelCritical == 0)) || !(\old(pumpRunning) == 1)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || tmp == 0) || !(2 <= \old(waterLevel))) && ((((!(\old(pumpRunning) == 1) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || (((pumpRunning == 0 && methAndRunningLastTime == 0) && 1 <= tmp) && waterLevel == 1)) || !(2 <= \old(waterLevel)))) && ((((!(\old(pumpRunning) == 0) || ((pumpRunning == 0 && methAndRunningLastTime == 0) && waterLevel == 1)) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || 0 == systemActive)) && ((((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || (methAndRunningLastTime == 0 && tmp == 0)) || \old(waterLevel) < 2) || !(methaneLevelCritical == 0)) || 0 == systemActive) || !(\old(waterLevel) <= 2))) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || ((waterLevel <= \old(waterLevel) && \old(waterLevel) <= waterLevel) && pumpRunning == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive)) && (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || !(methaneLevelCritical == 0)) || 0 == systemActive) || tmp == 0) - InvariantResult [Line: 211]: Loop Invariant Derived loop invariant: ((((((((((!(\old(methAndRunningLastTime) == 0) || (methAndRunningLastTime == 0 && tmp == 0)) || !(methaneLevelCritical == 0)) || !(\old(pumpRunning) == 1)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || (pumpRunning == 0 && waterLevel == 1)) || 0 == systemActive)) && (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || (methAndRunningLastTime == 0 && tmp == 0)) || !(methaneLevelCritical == 0)) || 0 == systemActive)) && ((((!(\old(pumpRunning) == 1) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || ((pumpRunning == 0 && 1 <= tmp) && waterLevel == 1)) || !(2 <= \old(waterLevel)))) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || (((methAndRunningLastTime == 0 && waterLevel <= \old(waterLevel)) && \old(waterLevel) <= waterLevel) && pumpRunning == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive)) && ((((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || \old(waterLevel) < 2) || !(methaneLevelCritical == 0)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || tmp == 0) - InvariantResult [Line: 579]: Loop Invariant Derived loop invariant: ((((((tmp == systemActive && tmp == 1) && 2 <= waterLevel) && splverifierCounter == 0) && waterLevel <= 2) && pumpRunning == 1) || (((((tmp == systemActive && pumpRunning == 0) && methAndRunningLastTime == 0) && 2 == waterLevel) && tmp == 1) && splverifierCounter == 0)) || (((((tmp == systemActive && pumpRunning == 0) && methAndRunningLastTime == 0) && tmp == 1) && splverifierCounter == 0) && waterLevel == 1) - InvariantResult [Line: 413]: Loop Invariant Derived loop invariant: ((((((((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(methaneLevelCritical == 0)) || !(\old(pumpRunning) == 1)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && ((((!(\old(pumpRunning) == 1) || ((1 <= tmp && waterLevel == 1) && pumpRunning == 1)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 2)) || 0 == systemActive)) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || 0 == systemActive) - InvariantResult [Line: 405]: Loop Invariant Derived loop invariant: (((((((((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(methaneLevelCritical == 0)) || !(\old(pumpRunning) == 1)) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || (pumpRunning == 0 && waterLevel == 1)) || 0 == systemActive)) && (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || methAndRunningLastTime == 0) || !(\old(waterLevel) == 1)) || !(methaneLevelCritical == 0)) || 0 == systemActive)) && ((((!(\old(pumpRunning) == 1) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || ((pumpRunning == 0 && 1 <= tmp) && waterLevel == 1)) || !(2 <= \old(waterLevel)))) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || (((methAndRunningLastTime == 0 && waterLevel <= \old(waterLevel)) && \old(waterLevel) <= waterLevel) && pumpRunning == 1)) || !(\old(waterLevel) == 2)) || 0 == systemActive) - InvariantResult [Line: 986]: Loop Invariant Derived loop invariant: ((((!(\old(pumpRunning) == 1) || 0 == systemActive) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 2)) || 0 == systemActive)) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(\old(waterLevel) == 1)) || 0 == systemActive) - InvariantResult [Line: 559]: Loop Invariant Derived loop invariant: (((((tmp == systemActive && tmp == 1) && 2 <= waterLevel) && splverifierCounter == 0) && waterLevel <= 2) && pumpRunning == 1) || (((((tmp == systemActive && pumpRunning == 0) && methAndRunningLastTime == 0) && tmp == 1) && splverifierCounter == 0) && waterLevel == 1) - InvariantResult [Line: 383]: Loop Invariant Derived loop invariant: ((((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || pumpRunning == 0) || 0 == systemActive) || !(methAndRunningLastTime == 0)) && (((((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(waterLevel <= 2)) || waterLevel < 2) || 0 == systemActive) || !(methAndRunningLastTime == 0)) - InvariantResult [Line: 558]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 100]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-20 21:11:17,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12b311c5-6ed2-4dbd-9cc9-719875b56a23/bin/utaipan-6cKwYrpEi9/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