./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product57.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9691d23a-6913-4953-95f0-75fc3791d926/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9691d23a-6913-4953-95f0-75fc3791d926/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9691d23a-6913-4953-95f0-75fc3791d926/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9691d23a-6913-4953-95f0-75fc3791d926/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product57.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9691d23a-6913-4953-95f0-75fc3791d926/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9691d23a-6913-4953-95f0-75fc3791d926/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d0f26fc8ab0bdaf05de905c05e583bc491c727ef99c3d3df87bba160b541b55a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:34:47,167 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:34:47,170 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:34:47,212 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:34:47,213 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:34:47,214 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:34:47,223 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:34:47,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:34:47,229 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:34:47,231 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:34:47,232 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:34:47,234 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:34:47,235 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:34:47,236 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:34:47,239 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:34:47,241 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:34:47,243 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:34:47,244 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:34:47,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:34:47,252 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:34:47,256 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:34:47,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:34:47,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:34:47,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:34:47,267 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:34:47,268 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:34:47,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:34:47,270 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:34:47,271 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:34:47,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:34:47,274 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:34:47,275 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:34:47,277 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:34:47,278 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:34:47,280 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:34:47,281 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:34:47,282 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:34:47,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:34:47,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:34:47,288 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:34:47,289 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:34:47,290 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9691d23a-6913-4953-95f0-75fc3791d926/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 03:34:47,353 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:34:47,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:34:47,362 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:34:47,363 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:34:47,364 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:34:47,365 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:34:47,365 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:34:47,365 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:34:47,365 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:34:47,366 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:34:47,367 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:34:47,368 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:34:47,368 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:34:47,368 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:34:47,369 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:34:47,369 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:34:47,369 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:34:47,369 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:34:47,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:34:47,371 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:34:47,371 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:34:47,371 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:34:47,372 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:34:47,372 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:34:47,372 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:34:47,372 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:34:47,374 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:34:47,375 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:34:47,375 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:34:47,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:34:47,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:34:47,376 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:34:47,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:34:47,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:34:47,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:34:47,377 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:34:47,378 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:34:47,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:34:47,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:34:47,378 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:34:47,379 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:34:47,379 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9691d23a-6913-4953-95f0-75fc3791d926/bin/utaipan-EQgc7hIp5V/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9691d23a-6913-4953-95f0-75fc3791d926/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d0f26fc8ab0bdaf05de905c05e583bc491c727ef99c3d3df87bba160b541b55a [2021-11-23 03:34:47,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:34:47,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:34:47,741 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:34:47,743 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:34:47,744 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:34:47,746 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9691d23a-6913-4953-95f0-75fc3791d926/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/product-lines/minepump_spec1_product57.cil.c [2021-11-23 03:34:47,842 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9691d23a-6913-4953-95f0-75fc3791d926/bin/utaipan-EQgc7hIp5V/data/f859420ab/6a254188be8149658ad3812f279cdfc7/FLAGb7ff6d6a0 [2021-11-23 03:34:48,535 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:34:48,536 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9691d23a-6913-4953-95f0-75fc3791d926/sv-benchmarks/c/product-lines/minepump_spec1_product57.cil.c [2021-11-23 03:34:48,568 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9691d23a-6913-4953-95f0-75fc3791d926/bin/utaipan-EQgc7hIp5V/data/f859420ab/6a254188be8149658ad3812f279cdfc7/FLAGb7ff6d6a0 [2021-11-23 03:34:48,820 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9691d23a-6913-4953-95f0-75fc3791d926/bin/utaipan-EQgc7hIp5V/data/f859420ab/6a254188be8149658ad3812f279cdfc7 [2021-11-23 03:34:48,824 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:34:48,826 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:34:48,828 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:34:48,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:34:48,839 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:34:48,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:34:48" (1/1) ... [2021-11-23 03:34:48,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fe688d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:48, skipping insertion in model container [2021-11-23 03:34:48,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:34:48" (1/1) ... [2021-11-23 03:34:48,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:34:48,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:34:49,334 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9691d23a-6913-4953-95f0-75fc3791d926/sv-benchmarks/c/product-lines/minepump_spec1_product57.cil.c[18661,18674] [2021-11-23 03:34:49,338 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:34:49,349 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:34:49,435 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9691d23a-6913-4953-95f0-75fc3791d926/sv-benchmarks/c/product-lines/minepump_spec1_product57.cil.c[18661,18674] [2021-11-23 03:34:49,436 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:34:49,459 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:34:49,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:49 WrapperNode [2021-11-23 03:34:49,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:34:49,461 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:34:49,461 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:34:49,461 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:34:49,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:49" (1/1) ... [2021-11-23 03:34:49,494 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:49" (1/1) ... [2021-11-23 03:34:49,530 INFO L137 Inliner]: procedures = 56, calls = 156, calls flagged for inlining = 24, calls inlined = 21, statements flattened = 268 [2021-11-23 03:34:49,531 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:34:49,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:34:49,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:34:49,532 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:34:49,543 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:49" (1/1) ... [2021-11-23 03:34:49,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:49" (1/1) ... [2021-11-23 03:34:49,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:49" (1/1) ... [2021-11-23 03:34:49,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:49" (1/1) ... [2021-11-23 03:34:49,555 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:49" (1/1) ... [2021-11-23 03:34:49,561 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:49" (1/1) ... [2021-11-23 03:34:49,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:49" (1/1) ... [2021-11-23 03:34:49,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:34:49,569 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:34:49,569 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:34:49,570 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:34:49,583 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:49" (1/1) ... [2021-11-23 03:34:49,603 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:34:49,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9691d23a-6913-4953-95f0-75fc3791d926/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:34:49,635 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9691d23a-6913-4953-95f0-75fc3791d926/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:34:49,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9691d23a-6913-4953-95f0-75fc3791d926/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:34:49,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:34:49,693 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-11-23 03:34:49,693 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-11-23 03:34:49,694 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-11-23 03:34:49,694 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-11-23 03:34:49,694 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-11-23 03:34:49,694 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-11-23 03:34:49,694 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-11-23 03:34:49,694 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-11-23 03:34:49,695 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-11-23 03:34:49,695 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-11-23 03:34:49,695 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-11-23 03:34:49,695 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-11-23 03:34:49,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:34:49,695 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-11-23 03:34:49,696 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-11-23 03:34:49,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:34:49,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:34:49,819 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:34:49,822 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:34:50,305 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:34:50,403 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:34:50,403 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 03:34:50,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:34:50 BoogieIcfgContainer [2021-11-23 03:34:50,407 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:34:50,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:34:50,409 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:34:50,413 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:34:50,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:34:48" (1/3) ... [2021-11-23 03:34:50,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58442a35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:34:50, skipping insertion in model container [2021-11-23 03:34:50,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:34:49" (2/3) ... [2021-11-23 03:34:50,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58442a35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:34:50, skipping insertion in model container [2021-11-23 03:34:50,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:34:50" (3/3) ... [2021-11-23 03:34:50,417 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product57.cil.c [2021-11-23 03:34:50,423 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:34:50,424 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:34:50,485 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:34:50,494 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:34:50,494 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:34:50,515 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 44 states have internal predecessors, (51), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-23 03:34:50,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 03:34:50,523 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:34:50,524 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:34:50,524 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:34:50,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:34:50,532 INFO L85 PathProgramCache]: Analyzing trace with hash -155139986, now seen corresponding path program 1 times [2021-11-23 03:34:50,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:34:50,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402894598] [2021-11-23 03:34:50,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:34:50,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:34:50,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:34:50,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:34:50,780 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:34:50,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402894598] [2021-11-23 03:34:50,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402894598] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:34:50,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:34:50,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:34:50,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211131552] [2021-11-23 03:34:50,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:34:50,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 03:34:50,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:34:50,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 03:34:50,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:34:50,864 INFO L87 Difference]: Start difference. First operand has 57 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 44 states have internal predecessors, (51), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:34:50,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:34:50,945 INFO L93 Difference]: Finished difference Result 112 states and 151 transitions. [2021-11-23 03:34:50,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 03:34:50,949 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 16 [2021-11-23 03:34:50,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:34:50,961 INFO L225 Difference]: With dead ends: 112 [2021-11-23 03:34:50,963 INFO L226 Difference]: Without dead ends: 52 [2021-11-23 03:34:50,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 03:34:50,982 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:34:50,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:34:51,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-11-23 03:34:51,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-11-23 03:34:51,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 33 states have (on average 1.303030303030303) internal successors, (43), 40 states have internal predecessors, (43), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-23 03:34:51,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2021-11-23 03:34:51,062 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 16 [2021-11-23 03:34:51,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:34:51,063 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2021-11-23 03:34:51,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:34:51,065 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2021-11-23 03:34:51,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 03:34:51,072 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:34:51,072 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:34:51,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:34:51,074 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:34:51,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:34:51,076 INFO L85 PathProgramCache]: Analyzing trace with hash -2134315190, now seen corresponding path program 1 times [2021-11-23 03:34:51,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:34:51,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484249144] [2021-11-23 03:34:51,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:34:51,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:34:51,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:34:51,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:34:51,187 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:34:51,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484249144] [2021-11-23 03:34:51,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484249144] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:34:51,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:34:51,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:34:51,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587459537] [2021-11-23 03:34:51,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:34:51,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:34:51,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:34:51,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:34:51,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:34:51,192 INFO L87 Difference]: Start difference. First operand 52 states and 66 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:34:51,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:34:51,251 INFO L93 Difference]: Finished difference Result 81 states and 103 transitions. [2021-11-23 03:34:51,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:34:51,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-23 03:34:51,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:34:51,254 INFO L225 Difference]: With dead ends: 81 [2021-11-23 03:34:51,254 INFO L226 Difference]: Without dead ends: 44 [2021-11-23 03:34:51,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:34:51,257 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 7 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:34:51,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 73 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:34:51,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-11-23 03:34:51,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-11-23 03:34:51,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 35 states have internal predecessors, (37), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-23 03:34:51,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2021-11-23 03:34:51,271 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 17 [2021-11-23 03:34:51,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:34:51,272 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2021-11-23 03:34:51,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:34:51,273 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2021-11-23 03:34:51,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 03:34:51,274 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:34:51,275 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:34:51,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:34:51,275 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:34:51,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:34:51,276 INFO L85 PathProgramCache]: Analyzing trace with hash -875472090, now seen corresponding path program 1 times [2021-11-23 03:34:51,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:34:51,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122320969] [2021-11-23 03:34:51,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:34:51,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:34:51,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:34:51,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:34:51,412 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:34:51,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122320969] [2021-11-23 03:34:51,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122320969] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:34:51,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:34:51,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:34:51,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114897531] [2021-11-23 03:34:51,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:34:51,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:34:51,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:34:51,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:34:51,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:34:51,416 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2021-11-23 03:34:51,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:34:51,465 INFO L93 Difference]: Finished difference Result 86 states and 109 transitions. [2021-11-23 03:34:51,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:34:51,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 19 [2021-11-23 03:34:51,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:34:51,468 INFO L225 Difference]: With dead ends: 86 [2021-11-23 03:34:51,468 INFO L226 Difference]: Without dead ends: 44 [2021-11-23 03:34:51,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:34:51,471 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 44 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:34:51,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 39 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:34:51,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-11-23 03:34:51,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-11-23 03:34:51,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 35 states have internal predecessors, (36), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2021-11-23 03:34:51,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 54 transitions. [2021-11-23 03:34:51,490 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 54 transitions. Word has length 19 [2021-11-23 03:34:51,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:34:51,490 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 54 transitions. [2021-11-23 03:34:51,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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) [2021-11-23 03:34:51,491 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 54 transitions. [2021-11-23 03:34:51,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-23 03:34:51,492 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:34:51,493 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:34:51,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:34:51,493 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:34:51,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:34:51,494 INFO L85 PathProgramCache]: Analyzing trace with hash -328650185, now seen corresponding path program 1 times [2021-11-23 03:34:51,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:34:51,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630335767] [2021-11-23 03:34:51,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:34:51,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:34:51,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:34:51,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:34:51,664 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:34:51,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630335767] [2021-11-23 03:34:51,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630335767] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:34:51,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:34:51,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:34:51,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657932386] [2021-11-23 03:34:51,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:34:51,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:34:51,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:34:51,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:34:51,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:34:51,667 INFO L87 Difference]: Start difference. First operand 44 states and 54 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2021-11-23 03:34:51,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:34:51,780 INFO L93 Difference]: Finished difference Result 120 states and 150 transitions. [2021-11-23 03:34:51,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:34:51,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 22 [2021-11-23 03:34:51,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:34:51,789 INFO L225 Difference]: With dead ends: 120 [2021-11-23 03:34:51,790 INFO L226 Difference]: Without dead ends: 78 [2021-11-23 03:34:51,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:34:51,793 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 36 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:34:51,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 82 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:34:51,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-11-23 03:34:51,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2021-11-23 03:34:51,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 50 states have (on average 1.24) internal successors, (62), 57 states have internal predecessors, (62), 13 states have call successors, (13), 12 states have call predecessors, (13), 12 states have return successors, (17), 13 states have call predecessors, (17), 13 states have call successors, (17) [2021-11-23 03:34:51,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 92 transitions. [2021-11-23 03:34:51,838 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 92 transitions. Word has length 22 [2021-11-23 03:34:51,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:34:51,839 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 92 transitions. [2021-11-23 03:34:51,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2021-11-23 03:34:51,843 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 92 transitions. [2021-11-23 03:34:51,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-23 03:34:51,849 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:34:51,850 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:34:51,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 03:34:51,850 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:34:51,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:34:51,854 INFO L85 PathProgramCache]: Analyzing trace with hash 95981869, now seen corresponding path program 1 times [2021-11-23 03:34:51,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:34:51,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519876545] [2021-11-23 03:34:51,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:34:51,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:34:51,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:34:51,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:34:51,999 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:34:52,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519876545] [2021-11-23 03:34:52,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519876545] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:34:52,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:34:52,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 03:34:52,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086831487] [2021-11-23 03:34:52,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:34:52,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:34:52,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:34:52,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:34:52,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:34:52,004 INFO L87 Difference]: Start difference. First operand 76 states and 92 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-23 03:34:52,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:34:52,239 INFO L93 Difference]: Finished difference Result 222 states and 277 transitions. [2021-11-23 03:34:52,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:34:52,240 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2021-11-23 03:34:52,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:34:52,244 INFO L225 Difference]: With dead ends: 222 [2021-11-23 03:34:52,244 INFO L226 Difference]: Without dead ends: 148 [2021-11-23 03:34:52,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:34:52,248 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 32 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:34:52,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 204 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:34:52,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-23 03:34:52,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 140. [2021-11-23 03:34:52,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 93 states have (on average 1.2150537634408602) internal successors, (113), 104 states have internal predecessors, (113), 24 states have call successors, (24), 22 states have call predecessors, (24), 22 states have return successors, (32), 24 states have call predecessors, (32), 24 states have call successors, (32) [2021-11-23 03:34:52,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 169 transitions. [2021-11-23 03:34:52,285 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 169 transitions. Word has length 30 [2021-11-23 03:34:52,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:34:52,286 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 169 transitions. [2021-11-23 03:34:52,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-23 03:34:52,286 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 169 transitions. [2021-11-23 03:34:52,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-23 03:34:52,289 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:34:52,289 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:34:52,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 03:34:52,289 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:34:52,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:34:52,290 INFO L85 PathProgramCache]: Analyzing trace with hash -719471641, now seen corresponding path program 1 times [2021-11-23 03:34:52,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:34:52,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731504369] [2021-11-23 03:34:52,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:34:52,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:34:52,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:34:52,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:34:52,421 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:34:52,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731504369] [2021-11-23 03:34:52,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731504369] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:34:52,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:34:52,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:34:52,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488215548] [2021-11-23 03:34:52,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:34:52,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:34:52,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:34:52,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:34:52,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:34:52,426 INFO L87 Difference]: Start difference. First operand 140 states and 169 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-23 03:34:52,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:34:52,725 INFO L93 Difference]: Finished difference Result 186 states and 223 transitions. [2021-11-23 03:34:52,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 03:34:52,726 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2021-11-23 03:34:52,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:34:52,741 INFO L225 Difference]: With dead ends: 186 [2021-11-23 03:34:52,742 INFO L226 Difference]: Without dead ends: 184 [2021-11-23 03:34:52,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:34:52,747 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 54 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:34:52,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 139 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:34:52,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-11-23 03:34:52,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 174. [2021-11-23 03:34:52,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 117 states have (on average 1.188034188034188) internal successors, (139), 128 states have internal predecessors, (139), 28 states have call successors, (28), 22 states have call predecessors, (28), 28 states have return successors, (42), 30 states have call predecessors, (42), 28 states have call successors, (42) [2021-11-23 03:34:52,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 209 transitions. [2021-11-23 03:34:52,792 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 209 transitions. Word has length 33 [2021-11-23 03:34:52,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:34:52,793 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 209 transitions. [2021-11-23 03:34:52,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-23 03:34:52,794 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 209 transitions. [2021-11-23 03:34:52,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-23 03:34:52,796 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:34:52,797 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:34:52,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 03:34:52,797 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:34:52,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:34:52,798 INFO L85 PathProgramCache]: Analyzing trace with hash 199702295, now seen corresponding path program 1 times [2021-11-23 03:34:52,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:34:52,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911389536] [2021-11-23 03:34:52,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:34:52,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:34:52,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:34:52,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:34:52,923 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:34:52,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911389536] [2021-11-23 03:34:52,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911389536] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:34:52,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:34:52,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 03:34:52,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650233614] [2021-11-23 03:34:52,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:34:52,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:34:52,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:34:52,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:34:52,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:34:52,926 INFO L87 Difference]: Start difference. First operand 174 states and 209 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 03:34:53,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:34:53,104 INFO L93 Difference]: Finished difference Result 458 states and 554 transitions. [2021-11-23 03:34:53,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:34:53,105 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 34 [2021-11-23 03:34:53,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:34:53,118 INFO L225 Difference]: With dead ends: 458 [2021-11-23 03:34:53,118 INFO L226 Difference]: Without dead ends: 286 [2021-11-23 03:34:53,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:34:53,122 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 104 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:34:53,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 136 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:34:53,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-11-23 03:34:53,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 242. [2021-11-23 03:34:53,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 163 states have (on average 1.165644171779141) internal successors, (190), 175 states have internal predecessors, (190), 37 states have call successors, (37), 35 states have call predecessors, (37), 41 states have return successors, (51), 39 states have call predecessors, (51), 37 states have call successors, (51) [2021-11-23 03:34:53,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 278 transitions. [2021-11-23 03:34:53,167 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 278 transitions. Word has length 34 [2021-11-23 03:34:53,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:34:53,167 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 278 transitions. [2021-11-23 03:34:53,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 03:34:53,168 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 278 transitions. [2021-11-23 03:34:53,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-23 03:34:53,170 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:34:53,170 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:34:53,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 03:34:53,171 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:34:53,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:34:53,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1326519423, now seen corresponding path program 1 times [2021-11-23 03:34:53,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:34:53,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212127367] [2021-11-23 03:34:53,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:34:53,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:34:53,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:34:53,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:34:53,421 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:34:53,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212127367] [2021-11-23 03:34:53,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212127367] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:34:53,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500041887] [2021-11-23 03:34:53,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:34:53,425 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:34:53,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9691d23a-6913-4953-95f0-75fc3791d926/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:34:53,433 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9691d23a-6913-4953-95f0-75fc3791d926/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:34:53,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9691d23a-6913-4953-95f0-75fc3791d926/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:34:53,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:34:53,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-23 03:34:53,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:34:54,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:34:54,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:34:54,753 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-23 03:34:54,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500041887] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:34:54,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [534887164] [2021-11-23 03:34:54,791 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2021-11-23 03:34:54,791 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:34:54,804 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:34:54,811 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:34:54,812 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:35:00,639 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 294 for LOIs [2021-11-23 03:35:00,717 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 316 for LOIs [2021-11-23 03:35:03,231 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 311 for LOIs [2021-11-23 03:35:05,430 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 43 for LOIs [2021-11-23 03:35:05,441 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 292 for LOIs [2021-11-23 03:35:05,497 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:35:45,369 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3499#(and (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~6#1|) (= |timeShift___utac_acc__Specification1_spec__1_~tmp~0#1| ~methaneLevelCritical~0) (= ~head~0.offset 0) (<= 2 ~waterLevel~0) (= 1 ~systemActive~0) (= |old(~pumpRunning~0)| 0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification1_spec__1_~tmp___0~0#1|) (<= 2 |old(~waterLevel~0)|) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~6#1|) (= ~head~0.base 0) (= |#NULL.offset| 0) (not (= |timeShift___utac_acc__Specification1_spec__1_~tmp~0#1| 0)) (<= 0 |timeShift___utac_acc__Specification1_spec__1_~tmp~0#1|) (<= 0 |#StackHeapBarrier|) (<= |timeShift___utac_acc__Specification1_spec__1_~tmp~0#1| 1) (= ~pumpRunning~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2021-11-23 03:35:45,369 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:35:45,369 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:35:45,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 24 [2021-11-23 03:35:45,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777250063] [2021-11-23 03:35:45,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 03:35:45,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-23 03:35:45,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:35:45,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-23 03:35:45,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=2122, Unknown=0, NotChecked=0, Total=2450 [2021-11-23 03:35:45,374 INFO L87 Difference]: Start difference. First operand 242 states and 278 transitions. Second operand has 24 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 states have internal predecessors, (57), 7 states have call successors, (14), 6 states have call predecessors, (14), 10 states have return successors, (13), 11 states have call predecessors, (13), 7 states have call successors, (13) [2021-11-23 03:35:50,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:35:50,223 INFO L93 Difference]: Finished difference Result 928 states and 1195 transitions. [2021-11-23 03:35:50,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-11-23 03:35:50,224 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 states have internal predecessors, (57), 7 states have call successors, (14), 6 states have call predecessors, (14), 10 states have return successors, (13), 11 states have call predecessors, (13), 7 states have call successors, (13) Word has length 37 [2021-11-23 03:35:50,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:35:50,232 INFO L225 Difference]: With dead ends: 928 [2021-11-23 03:35:50,232 INFO L226 Difference]: Without dead ends: 674 [2021-11-23 03:35:50,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 85 SyntacticMatches, 3 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4453 ImplicationChecksByTransitivity, 42.8s TimeCoverageRelationStatistics Valid=1530, Invalid=10680, Unknown=0, NotChecked=0, Total=12210 [2021-11-23 03:35:50,243 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 757 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 2372 mSolverCounterSat, 650 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 3022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 650 IncrementalHoareTripleChecker+Valid, 2372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:35:50,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [762 Valid, 489 Invalid, 3022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [650 Valid, 2372 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-23 03:35:50,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2021-11-23 03:35:50,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 481. [2021-11-23 03:35:50,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 322 states have (on average 1.1428571428571428) internal successors, (368), 347 states have internal predecessors, (368), 76 states have call successors, (76), 71 states have call predecessors, (76), 82 states have return successors, (96), 81 states have call predecessors, (96), 76 states have call successors, (96) [2021-11-23 03:35:50,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 540 transitions. [2021-11-23 03:35:50,325 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 540 transitions. Word has length 37 [2021-11-23 03:35:50,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:35:50,326 INFO L470 AbstractCegarLoop]: Abstraction has 481 states and 540 transitions. [2021-11-23 03:35:50,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 states have internal predecessors, (57), 7 states have call successors, (14), 6 states have call predecessors, (14), 10 states have return successors, (13), 11 states have call predecessors, (13), 7 states have call successors, (13) [2021-11-23 03:35:50,326 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 540 transitions. [2021-11-23 03:35:50,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-23 03:35:50,330 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:35:50,331 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:35:50,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9691d23a-6913-4953-95f0-75fc3791d926/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:35:50,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9691d23a-6913-4953-95f0-75fc3791d926/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:35:50,553 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:35:50,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:35:50,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1581672991, now seen corresponding path program 1 times [2021-11-23 03:35:50,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:35:50,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005354482] [2021-11-23 03:35:50,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:50,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:35:50,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:35:50,921 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-23 03:35:50,922 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:35:50,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005354482] [2021-11-23 03:35:50,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005354482] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:35:50,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449220611] [2021-11-23 03:35:50,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:35:50,923 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:35:50,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9691d23a-6913-4953-95f0-75fc3791d926/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:35:50,929 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9691d23a-6913-4953-95f0-75fc3791d926/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:35:50,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9691d23a-6913-4953-95f0-75fc3791d926/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 03:35:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:35:51,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-23 03:35:51,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:35:51,699 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:35:51,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:35:52,532 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-23 03:35:52,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449220611] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:35:52,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1929534426] [2021-11-23 03:35:52,536 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2021-11-23 03:35:52,537 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:35:52,537 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:35:52,538 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:35:52,538 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:36:00,091 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 24 for LOIs [2021-11-23 03:36:00,096 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 43 for LOIs [2021-11-23 03:36:00,524 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 37 for LOIs [2021-11-23 03:36:00,848 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 39 for LOIs [2021-11-23 03:36:00,859 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 41 for LOIs [2021-11-23 03:36:00,871 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 40 for LOIs [2021-11-23 03:36:00,881 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:36:06,982 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6220#(and (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~6#1|) (= |timeShift___utac_acc__Specification1_spec__1_~tmp~0#1| ~methaneLevelCritical~0) (<= 0 (+ |timeShift___utac_acc__Specification1_spec__1_~tmp___0~0#1| 2147483648)) (= ~head~0.offset 0) (<= |timeShift___utac_acc__Specification1_spec__1_~tmp___0~0#1| 2147483647) (= 1 ~systemActive~0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification1_spec__1_~tmp___0~0#1|) (<= 0 ~head~0.base) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~6#1|) (<= ~head~0.base 0) (= |#NULL.offset| 0) (not (= |timeShift___utac_acc__Specification1_spec__1_~tmp~0#1| 0)) (not (= |timeShift___utac_acc__Specification1_spec__1_~tmp___0~0#1| 0)) (<= 0 |timeShift___utac_acc__Specification1_spec__1_~tmp~0#1|) (<= 0 |#StackHeapBarrier|) (<= |timeShift___utac_acc__Specification1_spec__1_~tmp~0#1| 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2021-11-23 03:36:06,982 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:36:06,982 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:36:06,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 14] total 36 [2021-11-23 03:36:06,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686073513] [2021-11-23 03:36:06,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 03:36:06,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-23 03:36:06,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:36:06,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-23 03:36:06,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=449, Invalid=3457, Unknown=0, NotChecked=0, Total=3906 [2021-11-23 03:36:06,986 INFO L87 Difference]: Start difference. First operand 481 states and 540 transitions. Second operand has 36 states, 32 states have (on average 3.25) internal successors, (104), 29 states have internal predecessors, (104), 15 states have call successors, (26), 12 states have call predecessors, (26), 12 states have return successors, (24), 12 states have call predecessors, (24), 15 states have call successors, (24) [2021-11-23 03:36:13,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:36:13,772 INFO L93 Difference]: Finished difference Result 1733 states and 2048 transitions. [2021-11-23 03:36:13,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-11-23 03:36:13,774 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 32 states have (on average 3.25) internal successors, (104), 29 states have internal predecessors, (104), 15 states have call successors, (26), 12 states have call predecessors, (26), 12 states have return successors, (24), 12 states have call predecessors, (24), 15 states have call successors, (24) Word has length 65 [2021-11-23 03:36:13,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:36:13,787 INFO L225 Difference]: With dead ends: 1733 [2021-11-23 03:36:13,788 INFO L226 Difference]: Without dead ends: 1383 [2021-11-23 03:36:13,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 149 SyntacticMatches, 17 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8573 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=3039, Invalid=17841, Unknown=0, NotChecked=0, Total=20880 [2021-11-23 03:36:13,800 INFO L933 BasicCegarLoop]: 107 mSDtfsCounter, 1519 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 3048 mSolverCounterSat, 1363 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1527 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 4411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1363 IncrementalHoareTripleChecker+Valid, 3048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:36:13,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1527 Valid, 1038 Invalid, 4411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1363 Valid, 3048 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-23 03:36:13,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2021-11-23 03:36:13,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 883. [2021-11-23 03:36:13,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 598 states have (on average 1.1521739130434783) internal successors, (689), 645 states have internal predecessors, (689), 139 states have call successors, (139), 123 states have call predecessors, (139), 145 states have return successors, (189), 148 states have call predecessors, (189), 139 states have call successors, (189) [2021-11-23 03:36:13,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1017 transitions. [2021-11-23 03:36:13,944 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1017 transitions. Word has length 65 [2021-11-23 03:36:13,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:36:13,946 INFO L470 AbstractCegarLoop]: Abstraction has 883 states and 1017 transitions. [2021-11-23 03:36:13,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 32 states have (on average 3.25) internal successors, (104), 29 states have internal predecessors, (104), 15 states have call successors, (26), 12 states have call predecessors, (26), 12 states have return successors, (24), 12 states have call predecessors, (24), 15 states have call successors, (24) [2021-11-23 03:36:13,947 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1017 transitions. [2021-11-23 03:36:13,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-23 03:36:13,959 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:36:13,959 INFO L514 BasicCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:36:14,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9691d23a-6913-4953-95f0-75fc3791d926/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 03:36:14,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9691d23a-6913-4953-95f0-75fc3791d926/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:36:14,173 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:36:14,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:36:14,174 INFO L85 PathProgramCache]: Analyzing trace with hash -272289343, now seen corresponding path program 1 times [2021-11-23 03:36:14,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:36:14,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022394245] [2021-11-23 03:36:14,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:36:14,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:36:14,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:36:14,837 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 48 proven. 61 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-23 03:36:14,838 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:36:14,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022394245] [2021-11-23 03:36:14,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022394245] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:36:14,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445100153] [2021-11-23 03:36:14,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:36:14,839 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:36:14,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9691d23a-6913-4953-95f0-75fc3791d926/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:36:14,840 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9691d23a-6913-4953-95f0-75fc3791d926/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:36:14,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9691d23a-6913-4953-95f0-75fc3791d926/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 03:36:14,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:36:14,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 600 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-23 03:36:14,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:36:15,903 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 81 proven. 42 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-23 03:36:15,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:36:16,986 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 72 proven. 25 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-23 03:36:16,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445100153] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:36:16,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1186671782] [2021-11-23 03:36:16,990 INFO L159 IcfgInterpreter]: Started Sifa with 43 locations of interest [2021-11-23 03:36:16,990 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:36:16,991 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:36:16,991 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:36:16,992 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:36:24,222 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 24 for LOIs [2021-11-23 03:36:24,228 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 43 for LOIs [2021-11-23 03:36:24,609 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__highWaterSensor with input of size 37 for LOIs [2021-11-23 03:36:24,909 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 38 for LOIs [2021-11-23 03:36:24,916 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 41 for LOIs [2021-11-23 03:36:24,926 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__base with input of size 40 for LOIs [2021-11-23 03:36:24,933 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:36:31,589 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11122#(and (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~6#1|) (= |timeShift___utac_acc__Specification1_spec__1_~tmp~0#1| ~methaneLevelCritical~0) (<= 0 (+ |timeShift___utac_acc__Specification1_spec__1_~tmp___0~0#1| 2147483648)) (= ~head~0.offset 0) (<= |timeShift___utac_acc__Specification1_spec__1_~tmp___0~0#1| 2147483647) (= 1 ~systemActive~0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification1_spec__1_~tmp___0~0#1|) (<= 0 ~head~0.base) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~6#1|) (<= ~head~0.base 0) (= |#NULL.offset| 0) (not (= |timeShift___utac_acc__Specification1_spec__1_~tmp~0#1| 0)) (not (= |timeShift___utac_acc__Specification1_spec__1_~tmp___0~0#1| 0)) (<= 0 |timeShift___utac_acc__Specification1_spec__1_~tmp~0#1|) (<= 0 |#StackHeapBarrier|) (<= |timeShift___utac_acc__Specification1_spec__1_~tmp~0#1| 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2021-11-23 03:36:31,589 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:36:31,589 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:36:31,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 13, 13] total 40 [2021-11-23 03:36:31,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405776717] [2021-11-23 03:36:31,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 03:36:31,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-23 03:36:31,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:36:31,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-23 03:36:31,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=443, Invalid=3979, Unknown=0, NotChecked=0, Total=4422 [2021-11-23 03:36:31,593 INFO L87 Difference]: Start difference. First operand 883 states and 1017 transitions. Second operand has 40 states, 37 states have (on average 4.513513513513513) internal successors, (167), 37 states have internal predecessors, (167), 24 states have call successors, (37), 9 states have call predecessors, (37), 16 states have return successors, (39), 20 states have call predecessors, (39), 24 states have call successors, (39) [2021-11-23 03:36:36,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:36:36,301 INFO L93 Difference]: Finished difference Result 1320 states and 1534 transitions. [2021-11-23 03:36:36,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-11-23 03:36:36,302 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 37 states have (on average 4.513513513513513) internal successors, (167), 37 states have internal predecessors, (167), 24 states have call successors, (37), 9 states have call predecessors, (37), 16 states have return successors, (39), 20 states have call predecessors, (39), 24 states have call successors, (39) Word has length 114 [2021-11-23 03:36:36,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:36:36,305 INFO L225 Difference]: With dead ends: 1320 [2021-11-23 03:36:36,305 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 03:36:36,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 283 SyntacticMatches, 29 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6370 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=1854, Invalid=11952, Unknown=0, NotChecked=0, Total=13806 [2021-11-23 03:36:36,322 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 1479 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 1156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1479 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 2440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1156 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:36:36,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1479 Valid, 576 Invalid, 2440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1156 Valid, 1284 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-23 03:36:36,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 03:36:36,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 03:36:36,325 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) [2021-11-23 03:36:36,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 03:36:36,326 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 114 [2021-11-23 03:36:36,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:36:36,326 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 03:36:36,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 37 states have (on average 4.513513513513513) internal successors, (167), 37 states have internal predecessors, (167), 24 states have call successors, (37), 9 states have call predecessors, (37), 16 states have return successors, (39), 20 states have call predecessors, (39), 24 states have call successors, (39) [2021-11-23 03:36:36,327 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 03:36:36,327 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 03:36:36,331 INFO L764 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 03:36:36,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9691d23a-6913-4953-95f0-75fc3791d926/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 03:36:36,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9691d23a-6913-4953-95f0-75fc3791d926/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-23 03:36:36,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-23 03:36:44,533 INFO L858 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 586 592) no Hoare annotation was computed. [2021-11-23 03:36:44,534 INFO L861 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 586 592) the Hoare annotation is: true [2021-11-23 03:36:44,534 INFO L854 garLoopResultBuilder]: At program point changeMethaneLevelENTRY(lines 897 908) the Hoare annotation is: (let ((.cse0 (not (= ~pumpRunning~0 0))) (.cse1 (not (= 1 ~systemActive~0))) (.cse3 (not (= 2 ~waterLevel~0))) (.cse2 (= |old(~methaneLevelCritical~0)| ~methaneLevelCritical~0))) (and (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse2) (or .cse0 .cse1 .cse3 .cse2) (or (and (= |old(~methaneLevelCritical~0)| 0) (not (= ~pumpRunning~0 1))) .cse1 .cse3 .cse2))) [2021-11-23 03:36:44,535 INFO L858 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 897 908) no Hoare annotation was computed. [2021-11-23 03:36:44,535 INFO L861 garLoopResultBuilder]: At program point L800(lines 775 804) the Hoare annotation is: true [2021-11-23 03:36:44,535 INFO L858 garLoopResultBuilder]: For program point cleanupEXIT(lines 775 804) no Hoare annotation was computed. [2021-11-23 03:36:44,535 INFO L861 garLoopResultBuilder]: At program point cleanupENTRY(lines 775 804) the Hoare annotation is: true [2021-11-23 03:36:44,535 INFO L858 garLoopResultBuilder]: For program point L796(line 796) no Hoare annotation was computed. [2021-11-23 03:36:44,535 INFO L858 garLoopResultBuilder]: For program point L789(lines 789 793) no Hoare annotation was computed. [2021-11-23 03:36:44,536 INFO L861 garLoopResultBuilder]: At program point L789-1(lines 789 793) the Hoare annotation is: true [2021-11-23 03:36:44,536 INFO L861 garLoopResultBuilder]: At program point L785-2(lines 785 799) the Hoare annotation is: true [2021-11-23 03:36:44,536 INFO L861 garLoopResultBuilder]: At program point L781(line 781) the Hoare annotation is: true [2021-11-23 03:36:44,536 INFO L858 garLoopResultBuilder]: For program point L781-1(line 781) no Hoare annotation was computed. [2021-11-23 03:36:44,536 INFO L854 garLoopResultBuilder]: At program point L634(line 634) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0)))) (and (or (not (= |old(~pumpRunning~0)| 0)) (not (= |old(~waterLevel~0)| 1)) .cse0) (or .cse0 (not (= |old(~waterLevel~0)| 2))))) [2021-11-23 03:36:44,536 INFO L858 garLoopResultBuilder]: For program point L65(lines 65 71) no Hoare annotation was computed. [2021-11-23 03:36:44,537 INFO L854 garLoopResultBuilder]: At program point L639(line 639) the Hoare annotation is: (let ((.cse1 (not (= 1 ~systemActive~0))) (.cse2 (= ~pumpRunning~0 0)) (.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (not .cse0) (not (= |old(~waterLevel~0)| 1)) .cse1 (and .cse2 (= ~waterLevel~0 1))) (or .cse1 (and .cse2 .cse0 (= |old(~waterLevel~0)| ~waterLevel~0)) (not (= |old(~waterLevel~0)| 2))))) [2021-11-23 03:36:44,537 INFO L854 garLoopResultBuilder]: At program point L639-1(lines 620 644) the Hoare annotation is: (let ((.cse1 (= |old(~pumpRunning~0)| 0))) (let ((.cse3 (= ~waterLevel~0 1)) (.cse4 (not .cse1)) (.cse2 (= ~pumpRunning~0 0)) (.cse0 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 (and .cse2 (= |timeShift_processEnvironment_~tmp~6#1| 1) .cse3) (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))) (or .cse4 (not (= |old(~waterLevel~0)| 1)) .cse0 (and .cse2 .cse3)) (or .cse4 (and (= |old(~waterLevel~0)| ~waterLevel~0) (let ((.cse5 (= ~methaneLevelCritical~0 0))) (or (and .cse2 (not .cse5)) (and .cse5 (= ~pumpRunning~0 1))))) .cse0 (not (= |old(~waterLevel~0)| 2)))))) [2021-11-23 03:36:44,537 INFO L854 garLoopResultBuilder]: At program point L61(lines 61 74) the Hoare annotation is: (let ((.cse12 (= ~methaneLevelCritical~0 0)) (.cse6 (= |old(~pumpRunning~0)| 0)) (.cse5 (= |timeShift___utac_acc__Specification1_spec__1_~tmp~0#1| 0))) (let ((.cse2 (not (= |old(~waterLevel~0)| 2))) (.cse11 (not .cse5)) (.cse4 (= ~pumpRunning~0 0)) (.cse7 (= ~waterLevel~0 1)) (.cse0 (not .cse6)) (.cse10 (not (= |old(~waterLevel~0)| 1))) (.cse1 (not (= 1 ~systemActive~0))) (.cse3 (not .cse12)) (.cse8 (not (<= |old(~waterLevel~0)| 2))) (.cse9 (not (<= 2 |old(~waterLevel~0)|)))) (and (or .cse0 .cse1 .cse2 (and (or .cse3 (= ~pumpRunning~0 1)) (or .cse4 .cse5) (= |old(~waterLevel~0)| ~waterLevel~0))) (or .cse1 .cse6 (and .cse4 (= |timeShift_processEnvironment_~tmp~6#1| 1) .cse7) .cse8 .cse9) (or .cse0 .cse10 .cse1 (not (= ~methaneLevelCritical~0 1)) .cse11) (or .cse0 .cse12 .cse1 .cse2 .cse11) (or .cse0 .cse10 .cse1 (and .cse4 .cse7)) (or .cse0 .cse5 .cse10 .cse1 .cse3) (or .cse5 .cse1 .cse3 (not (= |old(~pumpRunning~0)| 1)) .cse8 .cse9)))) [2021-11-23 03:36:44,538 INFO L858 garLoopResultBuilder]: For program point L573-1(lines 573 579) no Hoare annotation was computed. [2021-11-23 03:36:44,538 INFO L854 garLoopResultBuilder]: At program point L61-1(lines 53 77) the Hoare annotation is: (let ((.cse12 (= ~methaneLevelCritical~0 0)) (.cse13 (= |old(~pumpRunning~0)| 0))) (let ((.cse0 (= |timeShift___utac_acc__Specification1_spec__1_~tmp~0#1| 0)) (.cse9 (= 1 ~systemActive~0)) (.cse4 (not .cse13)) (.cse3 (not .cse12))) (let ((.cse5 (not (= |old(~waterLevel~0)| 1))) (.cse6 (= |timeShift___utac_acc__Specification1_spec__1_~tmp___0~0#1| 0)) (.cse2 (and (or .cse4 .cse12) (or .cse3 (not (= |old(~pumpRunning~0)| 1))))) (.cse1 (not .cse9)) (.cse11 (not (= |old(~waterLevel~0)| 2))) (.cse7 (not .cse0)) (.cse8 (= ~pumpRunning~0 0)) (.cse10 (= ~waterLevel~0 1))) (and (or .cse0 .cse1 .cse2 .cse3 (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))) (or .cse4 .cse5 .cse1 (and .cse6 .cse7) (not (= ~methaneLevelCritical~0 1))) (or .cse4 (and .cse8 .cse9 .cse10) .cse5 .cse1) (or .cse4 .cse0 .cse5 .cse1 .cse3) (or .cse6 .cse1 .cse2 .cse11 .cse10) (let ((.cse14 (= |old(~waterLevel~0)| ~waterLevel~0))) (or .cse1 (and .cse0 .cse12 .cse13 .cse14 (= ~pumpRunning~0 1)) .cse11 (and .cse8 .cse13 .cse3 .cse14 .cse7) (and .cse4 .cse8 (= |timeShift_processEnvironment_~tmp~6#1| 1) .cse9 .cse10))))))) [2021-11-23 03:36:44,538 INFO L854 garLoopResultBuilder]: At program point L978(line 978) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0)))) (and (or (not (= |old(~pumpRunning~0)| 0)) (not (= |old(~waterLevel~0)| 1)) .cse0) (or .cse0 (not (= |old(~waterLevel~0)| 2))))) [2021-11-23 03:36:44,538 INFO L858 garLoopResultBuilder]: For program point L566-1(lines 565 584) no Hoare annotation was computed. [2021-11-23 03:36:44,539 INFO L854 garLoopResultBuilder]: At program point L628(lines 628 636) the Hoare annotation is: (let ((.cse1 (not (= |old(~waterLevel~0)| 2))) (.cse2 (not (= |old(~pumpRunning~0)| 0))) (.cse0 (not (= 1 ~systemActive~0)))) (and (or .cse0 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= |timeShift_processEnvironment_~tmp~6#1| 1) (= ~waterLevel~0 1)) .cse1) (or .cse2 .cse0 .cse1) (or .cse2 (not (= |old(~waterLevel~0)| 1)) .cse0))) [2021-11-23 03:36:44,539 INFO L854 garLoopResultBuilder]: At program point L624(lines 624 641) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (= ~pumpRunning~0 0))) (and (or (not (= |old(~pumpRunning~0)| 0)) (not (= |old(~waterLevel~0)| 1)) .cse0 (and .cse1 (= ~waterLevel~0 1))) (or .cse0 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (or (and .cse1 (= |old(~waterLevel~0)| ~waterLevel~0)) (and (not .cse1) (= |old(~waterLevel~0)| (+ ~waterLevel~0 1))))) (not (= |old(~waterLevel~0)| 2))))) [2021-11-23 03:36:44,539 INFO L854 garLoopResultBuilder]: At program point L59(line 59) the Hoare annotation is: (let ((.cse1 (= |old(~pumpRunning~0)| 0))) (let ((.cse3 (= ~waterLevel~0 1)) (.cse4 (not .cse1)) (.cse2 (= ~pumpRunning~0 0)) (.cse0 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 (and .cse2 (= |timeShift_processEnvironment_~tmp~6#1| 1) .cse3) (not (<= |old(~waterLevel~0)| 2)) (not (<= 2 |old(~waterLevel~0)|))) (or .cse4 (not (= |old(~waterLevel~0)| 1)) .cse0 (and .cse2 .cse3)) (or .cse4 (and (= |old(~waterLevel~0)| ~waterLevel~0) (let ((.cse5 (= ~methaneLevelCritical~0 0))) (or (and .cse2 (not .cse5)) (and .cse5 (= ~pumpRunning~0 1))))) .cse0 (not (= |old(~waterLevel~0)| 2)))))) [2021-11-23 03:36:44,540 INFO L858 garLoopResultBuilder]: For program point L59-1(line 59) no Hoare annotation was computed. [2021-11-23 03:36:44,540 INFO L854 garLoopResultBuilder]: At program point timeShiftENTRY(lines 562 585) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0)))) (and (or .cse0 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= |old(~waterLevel~0)| ~waterLevel~0)) (not (= |old(~waterLevel~0)| 2))) (or (not (= |old(~pumpRunning~0)| 0)) (not (= |old(~waterLevel~0)| 1)) .cse0 (and (= ~pumpRunning~0 0) (= ~waterLevel~0 1))))) [2021-11-23 03:36:44,540 INFO L858 garLoopResultBuilder]: For program point timeShiftEXIT(lines 562 585) no Hoare annotation was computed. [2021-11-23 03:36:44,540 INFO L858 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 978) no Hoare annotation was computed. [2021-11-23 03:36:44,541 INFO L861 garLoopResultBuilder]: At program point isMethaneLevelCriticalENTRY(lines 909 917) the Hoare annotation is: true [2021-11-23 03:36:44,541 INFO L858 garLoopResultBuilder]: For program point isMethaneLevelCriticalEXIT(lines 909 917) no Hoare annotation was computed. [2021-11-23 03:36:44,541 INFO L854 garLoopResultBuilder]: At program point L543(lines 496 544) the Hoare annotation is: false [2021-11-23 03:36:44,541 INFO L858 garLoopResultBuilder]: For program point L498(lines 497 542) no Hoare annotation was computed. [2021-11-23 03:36:44,542 INFO L854 garLoopResultBuilder]: At program point L519(line 519) the Hoare annotation is: (let ((.cse2 (= ~pumpRunning~0 0)) (.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= 2 ~waterLevel~0) (or (not (= ~methaneLevelCritical~0 0)) (= ~pumpRunning~0 1)) .cse0 .cse1) (and .cse2 .cse0 .cse1 (= ~waterLevel~0 1)) (and .cse2 (<= 2 ~waterLevel~0) .cse0 .cse1 (<= ~waterLevel~0 2)))) [2021-11-23 03:36:44,542 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-11-23 03:36:44,542 INFO L854 garLoopResultBuilder]: At program point L540(lines 497 542) the Hoare annotation is: (let ((.cse2 (= ~pumpRunning~0 0)) (.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= 2 ~waterLevel~0) .cse0 .cse1 (let ((.cse3 (= ~methaneLevelCritical~0 0))) (or (and .cse2 (not .cse3)) (and .cse3 (= ~pumpRunning~0 1))))) (and .cse2 .cse0 .cse1 (= ~waterLevel~0 1)))) [2021-11-23 03:36:44,542 INFO L858 garLoopResultBuilder]: For program point L507(lines 507 513) no Hoare annotation was computed. [2021-11-23 03:36:44,542 INFO L858 garLoopResultBuilder]: For program point L507-1(lines 507 513) no Hoare annotation was computed. [2021-11-23 03:36:44,543 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-23 03:36:44,543 INFO L854 garLoopResultBuilder]: At program point L533-2(lines 527 538) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= 2 ~waterLevel~0) .cse0 .cse1) (and (= ~pumpRunning~0 0) .cse0 .cse1 (= ~waterLevel~0 1)))) [2021-11-23 03:36:44,543 INFO L858 garLoopResultBuilder]: For program point L517(lines 517 523) no Hoare annotation was computed. [2021-11-23 03:36:44,543 INFO L858 garLoopResultBuilder]: For program point L517-1(lines 517 523) no Hoare annotation was computed. [2021-11-23 03:36:44,543 INFO L861 garLoopResultBuilder]: At program point L546(lines 487 550) the Hoare annotation is: true [2021-11-23 03:36:44,543 INFO L854 garLoopResultBuilder]: At program point L509(line 509) the Hoare annotation is: (let ((.cse4 (= ~pumpRunning~0 0)) (.cse0 (= 2 ~waterLevel~0)) (.cse2 (= 1 ~systemActive~0)) (.cse1 (= ~methaneLevelCritical~0 0)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 .cse2 .cse3 (= ~pumpRunning~0 1)) (and .cse4 .cse2 .cse3 (= ~waterLevel~0 1)) (and .cse4 .cse0 .cse2 (not .cse1) .cse3))) [2021-11-23 03:36:44,543 INFO L854 garLoopResultBuilder]: At program point L856(lines 856 863) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= ~methaneLevelCritical~0 0) (= 1 ~systemActive~0) (= ~waterLevel~0 1)) [2021-11-23 03:36:44,544 INFO L861 garLoopResultBuilder]: At program point L856-2(lines 856 863) the Hoare annotation is: true [2021-11-23 03:36:44,544 INFO L854 garLoopResultBuilder]: At program point processEnvironment__wrappee__highWaterSensorENTRY(lines 594 618) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= ~pumpRunning~0 0)) (.cse2 (not (= 1 ~systemActive~0)))) (and (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse2) (or .cse0 .cse1 .cse2 (not (= 2 ~waterLevel~0))))) [2021-11-23 03:36:44,544 INFO L854 garLoopResultBuilder]: At program point L684(line 684) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 (not (= 2 ~waterLevel~0)) (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~5#1| 1))) (or (not (= ~waterLevel~0 1)) .cse0 .cse1))) [2021-11-23 03:36:44,544 INFO L854 garLoopResultBuilder]: At program point L684-1(line 684) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= 1 ~systemActive~0)))) (and (or (not (= ~waterLevel~0 1)) .cse0 .cse1) (or .cse0 (and (= |processEnvironment__wrappee__highWaterSensor_isMethaneAlarm_#t~ret37#1| ~methaneLevelCritical~0) (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~5#1| 1)) .cse1 (not (= 2 ~waterLevel~0))))) [2021-11-23 03:36:44,544 INFO L854 garLoopResultBuilder]: At program point L608(line 608) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 (not (= 2 ~waterLevel~0))) (or (not (= ~waterLevel~0 1)) .cse0 .cse1 (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__highWaterSensor_~tmp~5#1| 0))))) [2021-11-23 03:36:44,544 INFO L858 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 594 618) no Hoare annotation was computed. [2021-11-23 03:36:44,544 INFO L858 garLoopResultBuilder]: For program point L602(lines 602 610) no Hoare annotation was computed. [2021-11-23 03:36:44,544 INFO L854 garLoopResultBuilder]: At program point L598(lines 598 615) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (= ~pumpRunning~0 0)) (.cse2 (not (= 1 ~systemActive~0)))) (and (or (not (= ~waterLevel~0 1)) .cse0 .cse1 .cse2) (or .cse0 .cse1 .cse2 (not (= 2 ~waterLevel~0))))) [2021-11-23 03:36:44,545 INFO L854 garLoopResultBuilder]: At program point L613(line 613) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 (not (= 2 ~waterLevel~0))) (or (not (= ~waterLevel~0 1)) .cse0 .cse1))) [2021-11-23 03:36:44,545 INFO L858 garLoopResultBuilder]: For program point L613-1(lines 594 618) no Hoare annotation was computed. [2021-11-23 03:36:44,545 INFO L858 garLoopResultBuilder]: For program point waterRiseEXIT(lines 885 896) no Hoare annotation was computed. [2021-11-23 03:36:44,545 INFO L854 garLoopResultBuilder]: At program point waterRiseENTRY(lines 885 896) the Hoare annotation is: (let ((.cse0 (not (= ~pumpRunning~0 0))) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 (not (= |old(~waterLevel~0)| 1)) .cse1 (= ~waterLevel~0 1)) (or (let ((.cse2 (= ~methaneLevelCritical~0 0))) (and (or .cse0 .cse2) (or (not .cse2) (not (= ~pumpRunning~0 1))))) .cse1 (not (= |old(~waterLevel~0)| 2)) (= |old(~waterLevel~0)| ~waterLevel~0)))) [2021-11-23 03:36:44,548 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:36:44,549 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 03:36:44,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:36:44 BoogieIcfgContainer [2021-11-23 03:36:44,581 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 03:36:44,582 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 03:36:44,582 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 03:36:44,583 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 03:36:44,583 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:34:50" (3/4) ... [2021-11-23 03:36:44,587 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 03:36:44,594 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2021-11-23 03:36:44,594 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2021-11-23 03:36:44,594 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2021-11-23 03:36:44,594 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2021-11-23 03:36:44,595 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2021-11-23 03:36:44,595 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2021-11-23 03:36:44,595 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2021-11-23 03:36:44,607 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 79 nodes and edges [2021-11-23 03:36:44,609 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2021-11-23 03:36:44,609 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-11-23 03:36:44,610 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-23 03:36:44,611 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-23 03:36:44,612 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 03:36:44,613 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 03:36:44,645 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!(1 == systemActive) || (pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) == 2)) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (pumpRunning == 0 && waterLevel == 1)) [2021-11-23 03:36:44,646 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (pumpRunning == 0 && waterLevel == 1)) && ((!(1 == systemActive) || (pumpRunning == \old(pumpRunning) && ((pumpRunning == 0 && \old(waterLevel) == waterLevel) || (!(pumpRunning == 0) && \old(waterLevel) == waterLevel + 1)))) || !(\old(waterLevel) == 2)) [2021-11-23 03:36:44,646 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!(1 == systemActive) || \old(pumpRunning) == 0) || ((pumpRunning == 0 && tmp == 1) && waterLevel == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (pumpRunning == 0 && waterLevel == 1))) && (((!(\old(pumpRunning) == 0) || (\old(waterLevel) == waterLevel && ((pumpRunning == 0 && !(methaneLevelCritical == 0)) || (methaneLevelCritical == 0 && pumpRunning == 1)))) || !(1 == systemActive)) || !(\old(waterLevel) == 2)) [2021-11-23 03:36:44,647 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || pumpRunning == 0) || !(1 == systemActive)) && (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 == systemActive)) || !(2 == waterLevel)) [2021-11-23 03:36:44,647 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(\old(waterLevel) == 2)) || (((!(methaneLevelCritical == 0) || pumpRunning == 1) && (pumpRunning == 0 || tmp == 0)) && \old(waterLevel) == waterLevel)) && ((((!(1 == systemActive) || \old(pumpRunning) == 0) || ((pumpRunning == 0 && tmp == 1) && waterLevel == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && ((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || !(methaneLevelCritical == 1)) || !(tmp == 0))) && ((((!(\old(pumpRunning) == 0) || methaneLevelCritical == 0) || !(1 == systemActive)) || !(\old(waterLevel) == 2)) || !(tmp == 0))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (pumpRunning == 0 && waterLevel == 1))) && ((((!(\old(pumpRunning) == 0) || tmp == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || !(methaneLevelCritical == 0))) && (((((tmp == 0 || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) [2021-11-23 03:36:44,648 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((tmp == 0 || !(1 == systemActive)) || ((!(\old(pumpRunning) == 0) || methaneLevelCritical == 0) && (!(methaneLevelCritical == 0) || !(\old(pumpRunning) == 1)))) || !(methaneLevelCritical == 0)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && ((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (tmp___0 == 0 && !(tmp == 0))) || !(methaneLevelCritical == 1))) && (((!(\old(pumpRunning) == 0) || ((pumpRunning == 0 && 1 == systemActive) && waterLevel == 1)) || !(\old(waterLevel) == 1)) || !(1 == systemActive))) && ((((!(\old(pumpRunning) == 0) || tmp == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || !(methaneLevelCritical == 0))) && ((((tmp___0 == 0 || !(1 == systemActive)) || ((!(\old(pumpRunning) == 0) || methaneLevelCritical == 0) && (!(methaneLevelCritical == 0) || !(\old(pumpRunning) == 1)))) || !(\old(waterLevel) == 2)) || waterLevel == 1)) && ((((!(1 == systemActive) || ((((tmp == 0 && methaneLevelCritical == 0) && \old(pumpRunning) == 0) && \old(waterLevel) == waterLevel) && pumpRunning == 1)) || !(\old(waterLevel) == 2)) || ((((pumpRunning == 0 && \old(pumpRunning) == 0) && !(methaneLevelCritical == 0)) && \old(waterLevel) == waterLevel) && !(tmp == 0))) || ((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && tmp == 1) && 1 == systemActive) && waterLevel == 1)) [2021-11-23 03:36:44,648 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || !(1 == systemActive)) && (((!(\old(pumpRunning) == 0) || ((aux-isMethaneLevelCritical()-aux == methaneLevelCritical && pumpRunning == 0) && tmp == 1)) || !(1 == systemActive)) || !(2 == waterLevel)) [2021-11-23 03:36:44,650 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) && (!(1 == systemActive) || !(\old(waterLevel) == 2)) [2021-11-23 03:36:44,651 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(1 == systemActive) || ((pumpRunning == \old(pumpRunning) && tmp == 1) && waterLevel == 1)) || !(\old(waterLevel) == 2)) && ((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(\old(waterLevel) == 2))) && ((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) [2021-11-23 03:36:44,696 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9691d23a-6913-4953-95f0-75fc3791d926/bin/utaipan-EQgc7hIp5V/witness.graphml [2021-11-23 03:36:44,696 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 03:36:44,697 INFO L158 Benchmark]: Toolchain (without parser) took 115870.34ms. Allocated memory was 104.9MB in the beginning and 536.9MB in the end (delta: 432.0MB). Free memory was 69.4MB in the beginning and 294.1MB in the end (delta: -224.6MB). Peak memory consumption was 206.1MB. Max. memory is 16.1GB. [2021-11-23 03:36:44,697 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 104.9MB. Free memory was 75.6MB in the beginning and 75.6MB in the end (delta: 28.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:36:44,698 INFO L158 Benchmark]: CACSL2BoogieTranslator took 631.83ms. Allocated memory is still 104.9MB. Free memory was 69.4MB in the beginning and 73.8MB in the end (delta: -4.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 03:36:44,698 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.94ms. Allocated memory is still 104.9MB. Free memory was 73.8MB in the beginning and 71.0MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:36:44,699 INFO L158 Benchmark]: Boogie Preprocessor took 36.42ms. Allocated memory is still 104.9MB. Free memory was 71.0MB in the beginning and 69.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:36:44,699 INFO L158 Benchmark]: RCFGBuilder took 837.76ms. Allocated memory is still 104.9MB. Free memory was 69.6MB in the beginning and 47.7MB in the end (delta: 21.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-11-23 03:36:44,700 INFO L158 Benchmark]: TraceAbstraction took 114172.92ms. Allocated memory was 104.9MB in the beginning and 536.9MB in the end (delta: 432.0MB). Free memory was 47.1MB in the beginning and 301.4MB in the end (delta: -254.3MB). Peak memory consumption was 303.0MB. Max. memory is 16.1GB. [2021-11-23 03:36:44,700 INFO L158 Benchmark]: Witness Printer took 114.11ms. Allocated memory is still 536.9MB. Free memory was 301.4MB in the beginning and 294.1MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 03:36:44,703 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 104.9MB. Free memory was 75.6MB in the beginning and 75.6MB in the end (delta: 28.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 631.83ms. Allocated memory is still 104.9MB. Free memory was 69.4MB in the beginning and 73.8MB in the end (delta: -4.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.94ms. Allocated memory is still 104.9MB. Free memory was 73.8MB in the beginning and 71.0MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.42ms. Allocated memory is still 104.9MB. Free memory was 71.0MB in the beginning and 69.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 837.76ms. Allocated memory is still 104.9MB. Free memory was 69.6MB in the beginning and 47.7MB in the end (delta: 21.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 114172.92ms. Allocated memory was 104.9MB in the beginning and 536.9MB in the end (delta: 432.0MB). Free memory was 47.1MB in the beginning and 301.4MB in the end (delta: -254.3MB). Peak memory consumption was 303.0MB. Max. memory is 16.1GB. * Witness Printer took 114.11ms. Allocated memory is still 536.9MB. Free memory was 301.4MB in the beginning and 294.1MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.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: 978]: 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, 57 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 114.1s, OverallIterations: 10, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 17.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 8.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4055 SdHoareTripleChecker+Valid, 6.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4032 mSDsluCounter, 2831 SdHoareTripleChecker+Invalid, 5.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2835 mSDsCounter, 3236 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7110 IncrementalHoareTripleChecker+Invalid, 10346 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3236 mSolverCounterUnsat, 636 mSDtfsCounter, 7110 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 975 GetRequests, 536 SyntacticMatches, 49 SemanticMatches, 390 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19405 ImplicationChecksByTransitivity, 64.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=883occurred in iteration=9, InterpolantAutomatonStates: 248, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 10 MinimizatonAttempts, 757 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 34 LocationsWithAnnotation, 1331 PreInvPairs, 1534 NumberOfFragments, 1226 HoareAnnotationTreeSize, 1331 FomulaSimplifications, 7728 FormulaSimplificationTreeSizeReduction, 1.4s HoareSimplificationTime, 34 FomulaSimplificationsInter, 75769 FormulaSimplificationTreeSizeReductionInter, 6.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 6.4s InterpolantComputationTime, 603 NumberOfCodeBlocks, 603 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 803 ConstructedInterpolants, 0 QuantifiedInterpolants, 3688 SizeOfPredicates, 37 NumberOfNonLiveVariables, 1385 ConjunctsInSsa, 101 ConjunctsInUnsatCore, 16 InterpolantComputations, 7 PerfectInterpolantSequences, 353/512 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: 487]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 684]: Loop Invariant Derived loop invariant: ((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || !(1 == systemActive)) && (((!(\old(pumpRunning) == 0) || ((aux-isMethaneLevelCritical()-aux == methaneLevelCritical && pumpRunning == 0) && tmp == 1)) || !(1 == systemActive)) || !(2 == waterLevel)) - InvariantResult [Line: 620]: Loop Invariant Derived loop invariant: (((((!(1 == systemActive) || \old(pumpRunning) == 0) || ((pumpRunning == 0 && tmp == 1) && waterLevel == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (pumpRunning == 0 && waterLevel == 1))) && (((!(\old(pumpRunning) == 0) || (\old(waterLevel) == waterLevel && ((pumpRunning == 0 && !(methaneLevelCritical == 0)) || (methaneLevelCritical == 0 && pumpRunning == 1)))) || !(1 == systemActive)) || !(\old(waterLevel) == 2)) - InvariantResult [Line: 562]: Loop Invariant Derived loop invariant: ((!(1 == systemActive) || (pumpRunning == \old(pumpRunning) && \old(waterLevel) == waterLevel)) || !(\old(waterLevel) == 2)) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (pumpRunning == 0 && waterLevel == 1)) - InvariantResult [Line: 53]: Loop Invariant Derived loop invariant: (((((((((tmp == 0 || !(1 == systemActive)) || ((!(\old(pumpRunning) == 0) || methaneLevelCritical == 0) && (!(methaneLevelCritical == 0) || !(\old(pumpRunning) == 1)))) || !(methaneLevelCritical == 0)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) && ((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (tmp___0 == 0 && !(tmp == 0))) || !(methaneLevelCritical == 1))) && (((!(\old(pumpRunning) == 0) || ((pumpRunning == 0 && 1 == systemActive) && waterLevel == 1)) || !(\old(waterLevel) == 1)) || !(1 == systemActive))) && ((((!(\old(pumpRunning) == 0) || tmp == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || !(methaneLevelCritical == 0))) && ((((tmp___0 == 0 || !(1 == systemActive)) || ((!(\old(pumpRunning) == 0) || methaneLevelCritical == 0) && (!(methaneLevelCritical == 0) || !(\old(pumpRunning) == 1)))) || !(\old(waterLevel) == 2)) || waterLevel == 1)) && ((((!(1 == systemActive) || ((((tmp == 0 && methaneLevelCritical == 0) && \old(pumpRunning) == 0) && \old(waterLevel) == waterLevel) && pumpRunning == 1)) || !(\old(waterLevel) == 2)) || ((((pumpRunning == 0 && \old(pumpRunning) == 0) && !(methaneLevelCritical == 0)) && \old(waterLevel) == waterLevel) && !(tmp == 0))) || ((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && tmp == 1) && 1 == systemActive) && waterLevel == 1)) - InvariantResult [Line: 856]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 978]: Loop Invariant Derived loop invariant: ((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) && (!(1 == systemActive) || !(\old(waterLevel) == 2)) - InvariantResult [Line: 497]: Loop Invariant Derived loop invariant: (((2 == waterLevel && 1 == systemActive) && splverifierCounter == 0) && ((pumpRunning == 0 && !(methaneLevelCritical == 0)) || (methaneLevelCritical == 0 && pumpRunning == 1))) || (((pumpRunning == 0 && 1 == systemActive) && splverifierCounter == 0) && waterLevel == 1) - InvariantResult [Line: 856]: Loop Invariant Derived loop invariant: ((pumpRunning == 0 && methaneLevelCritical == 0) && 1 == systemActive) && waterLevel == 1 - InvariantResult [Line: 628]: Loop Invariant Derived loop invariant: (((!(1 == systemActive) || ((pumpRunning == \old(pumpRunning) && tmp == 1) && waterLevel == 1)) || !(\old(waterLevel) == 2)) && ((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(\old(waterLevel) == 2))) && ((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) - InvariantResult [Line: 496]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 785]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 775]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 624]: Loop Invariant Derived loop invariant: (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (pumpRunning == 0 && waterLevel == 1)) && ((!(1 == systemActive) || (pumpRunning == \old(pumpRunning) && ((pumpRunning == 0 && \old(waterLevel) == waterLevel) || (!(pumpRunning == 0) && \old(waterLevel) == waterLevel + 1)))) || !(\old(waterLevel) == 2)) - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: ((((((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || !(\old(waterLevel) == 2)) || (((!(methaneLevelCritical == 0) || pumpRunning == 1) && (pumpRunning == 0 || tmp == 0)) && \old(waterLevel) == waterLevel)) && ((((!(1 == systemActive) || \old(pumpRunning) == 0) || ((pumpRunning == 0 && tmp == 1) && waterLevel == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel)))) && ((((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || !(methaneLevelCritical == 1)) || !(tmp == 0))) && ((((!(\old(pumpRunning) == 0) || methaneLevelCritical == 0) || !(1 == systemActive)) || !(\old(waterLevel) == 2)) || !(tmp == 0))) && (((!(\old(pumpRunning) == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || (pumpRunning == 0 && waterLevel == 1))) && ((((!(\old(pumpRunning) == 0) || tmp == 0) || !(\old(waterLevel) == 1)) || !(1 == systemActive)) || !(methaneLevelCritical == 0))) && (((((tmp == 0 || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || !(\old(pumpRunning) == 1)) || !(\old(waterLevel) <= 2)) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 598]: Loop Invariant Derived loop invariant: (((!(waterLevel == 1) || !(\old(pumpRunning) == 0)) || pumpRunning == 0) || !(1 == systemActive)) && (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 == systemActive)) || !(2 == waterLevel)) RESULT: Ultimate proved your program to be correct! [2021-11-23 03:36:44,783 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9691d23a-6913-4953-95f0-75fc3791d926/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE