./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ab3c50-8396-4b7c-88e2-b348f124c376/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ab3c50-8396-4b7c-88e2-b348f124c376/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ab3c50-8396-4b7c-88e2-b348f124c376/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ab3c50-8396-4b7c-88e2-b348f124c376/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ab3c50-8396-4b7c-88e2-b348f124c376/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ab3c50-8396-4b7c-88e2-b348f124c376/bin/uautomizer-J5u9QxTXDZ --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1849026681bb840017399851b7fbd7074a9bb56e2104927ac4a62c52d8de2e86 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:16:06,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:16:06,220 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:16:06,253 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:16:06,254 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:16:06,256 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:16:06,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:16:06,261 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:16:06,263 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:16:06,265 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:16:06,266 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:16:06,268 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:16:06,269 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:16:06,270 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:16:06,274 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:16:06,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:16:06,281 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:16:06,284 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:16:06,287 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:16:06,290 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:16:06,292 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:16:06,294 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:16:06,296 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:16:06,297 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:16:06,303 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:16:06,303 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:16:06,304 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:16:06,305 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:16:06,306 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:16:06,307 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:16:06,308 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:16:06,309 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:16:06,310 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:16:06,311 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:16:06,313 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:16:06,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:16:06,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:16:06,315 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:16:06,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:16:06,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:16:06,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:16:06,319 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ab3c50-8396-4b7c-88e2-b348f124c376/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-10-17 10:16:06,347 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:16:06,347 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:16:06,347 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:16:06,348 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:16:06,348 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:16:06,349 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:16:06,350 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:16:06,350 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:16:06,350 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:16:06,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:16:06,351 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:16:06,351 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:16:06,351 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:16:06,352 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:16:06,352 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:16:06,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:16:06,353 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:16:06,353 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:16:06,353 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:16:06,353 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:16:06,354 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:16:06,354 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:16:06,354 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:16:06,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:16:06,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:16:06,355 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:16:06,355 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:16:06,356 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:16:06,356 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:16:06,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:16:06,356 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-10-17 10:16:06,357 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-10-17 10:16:06,357 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:16:06,357 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ab3c50-8396-4b7c-88e2-b348f124c376/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ab3c50-8396-4b7c-88e2-b348f124c376/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1849026681bb840017399851b7fbd7074a9bb56e2104927ac4a62c52d8de2e86 [2022-10-17 10:16:06,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:16:06,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:16:06,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:16:06,708 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:16:06,709 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:16:06,710 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ab3c50-8396-4b7c-88e2-b348f124c376/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c [2022-10-17 10:16:06,790 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ab3c50-8396-4b7c-88e2-b348f124c376/bin/uautomizer-J5u9QxTXDZ/data/66e09c731/18ad46182cfe40f08dea143195b85633/FLAG44b3a6cc6 [2022-10-17 10:16:07,342 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:16:07,343 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ab3c50-8396-4b7c-88e2-b348f124c376/sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c [2022-10-17 10:16:07,359 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ab3c50-8396-4b7c-88e2-b348f124c376/bin/uautomizer-J5u9QxTXDZ/data/66e09c731/18ad46182cfe40f08dea143195b85633/FLAG44b3a6cc6 [2022-10-17 10:16:07,635 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ab3c50-8396-4b7c-88e2-b348f124c376/bin/uautomizer-J5u9QxTXDZ/data/66e09c731/18ad46182cfe40f08dea143195b85633 [2022-10-17 10:16:07,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:16:07,640 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:16:07,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:16:07,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:16:07,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:16:07,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:16:07" (1/1) ... [2022-10-17 10:16:07,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9d61707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:07, skipping insertion in model container [2022-10-17 10:16:07,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:16:07" (1/1) ... [2022-10-17 10:16:07,673 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:16:07,740 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:16:08,217 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_72ab3c50-8396-4b7c-88e2-b348f124c376/sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c[17676,17689] [2022-10-17 10:16:08,222 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:16:08,234 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:16:08,317 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_72ab3c50-8396-4b7c-88e2-b348f124c376/sv-benchmarks/c/product-lines/minepump_spec2_product36.cil.c[17676,17689] [2022-10-17 10:16:08,320 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:16:08,343 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:16:08,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:08 WrapperNode [2022-10-17 10:16:08,344 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:16:08,345 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:16:08,345 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:16:08,345 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:16:08,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:08" (1/1) ... [2022-10-17 10:16:08,374 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:08" (1/1) ... [2022-10-17 10:16:08,423 INFO L138 Inliner]: procedures = 55, calls = 153, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 235 [2022-10-17 10:16:08,423 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:16:08,424 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:16:08,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:16:08,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:16:08,436 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:08" (1/1) ... [2022-10-17 10:16:08,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:08" (1/1) ... [2022-10-17 10:16:08,453 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:08" (1/1) ... [2022-10-17 10:16:08,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:08" (1/1) ... [2022-10-17 10:16:08,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:08" (1/1) ... [2022-10-17 10:16:08,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:08" (1/1) ... [2022-10-17 10:16:08,469 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:08" (1/1) ... [2022-10-17 10:16:08,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:08" (1/1) ... [2022-10-17 10:16:08,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:16:08,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:16:08,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:16:08,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:16:08,477 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:08" (1/1) ... [2022-10-17 10:16:08,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:16:08,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ab3c50-8396-4b7c-88e2-b348f124c376/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:16:08,541 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ab3c50-8396-4b7c-88e2-b348f124c376/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:16:08,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ab3c50-8396-4b7c-88e2-b348f124c376/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:16:08,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:16:08,608 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-10-17 10:16:08,608 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-10-17 10:16:08,608 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-10-17 10:16:08,608 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-10-17 10:16:08,609 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-10-17 10:16:08,609 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-10-17 10:16:08,611 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2022-10-17 10:16:08,611 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2022-10-17 10:16:08,612 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-10-17 10:16:08,612 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-10-17 10:16:08,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 10:16:08,613 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-10-17 10:16:08,613 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-10-17 10:16:08,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:16:08,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:16:08,730 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:16:08,733 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:16:09,120 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:16:09,130 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:16:09,131 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-17 10:16:09,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:16:09 BoogieIcfgContainer [2022-10-17 10:16:09,134 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:16:09,137 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:16:09,137 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:16:09,142 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:16:09,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:16:07" (1/3) ... [2022-10-17 10:16:09,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4455d717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:16:09, skipping insertion in model container [2022-10-17 10:16:09,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:16:08" (2/3) ... [2022-10-17 10:16:09,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4455d717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:16:09, skipping insertion in model container [2022-10-17 10:16:09,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:16:09" (3/3) ... [2022-10-17 10:16:09,146 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product36.cil.c [2022-10-17 10:16:09,170 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:16:09,170 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-10-17 10:16:09,305 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:16:09,319 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6e6730f9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:16:09,320 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-10-17 10:16:09,346 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 64 states have (on average 1.390625) internal successors, (89), 70 states have internal predecessors, (89), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2022-10-17 10:16:09,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-10-17 10:16:09,379 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:16:09,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:16:09,380 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:16:09,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:09,387 INFO L85 PathProgramCache]: Analyzing trace with hash 715093165, now seen corresponding path program 1 times [2022-10-17 10:16:09,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:09,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681100965] [2022-10-17 10:16:09,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:09,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:16:09,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:09,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-10-17 10:16:09,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:09,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:16:09,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:16:09,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681100965] [2022-10-17 10:16:09,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681100965] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:16:09,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:16:09,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:16:09,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28212432] [2022-10-17 10:16:09,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:16:09,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:16:09,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:16:09,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:16:09,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:16:09,843 INFO L87 Difference]: Start difference. First operand has 81 states, 64 states have (on average 1.390625) internal successors, (89), 70 states have internal predecessors, (89), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:16:09,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:16:09,886 INFO L93 Difference]: Finished difference Result 153 states and 208 transitions. [2022-10-17 10:16:09,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:16:09,889 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 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 25 [2022-10-17 10:16:09,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:16:09,902 INFO L225 Difference]: With dead ends: 153 [2022-10-17 10:16:09,903 INFO L226 Difference]: Without dead ends: 72 [2022-10-17 10:16:09,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:16:09,916 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:16:09,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:16:09,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-10-17 10:16:09,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2022-10-17 10:16:09,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 57 states have (on average 1.3157894736842106) internal successors, (75), 62 states have internal predecessors, (75), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-10-17 10:16:09,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 92 transitions. [2022-10-17 10:16:09,985 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 92 transitions. Word has length 25 [2022-10-17 10:16:09,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:16:09,986 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 92 transitions. [2022-10-17 10:16:09,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:16:09,987 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 92 transitions. [2022-10-17 10:16:09,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-10-17 10:16:09,991 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:16:09,991 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:16:09,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:16:09,992 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:16:09,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:09,993 INFO L85 PathProgramCache]: Analyzing trace with hash 793385251, now seen corresponding path program 1 times [2022-10-17 10:16:09,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:09,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809428251] [2022-10-17 10:16:09,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:09,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:16:10,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:10,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-10-17 10:16:10,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:10,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:16:10,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:16:10,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809428251] [2022-10-17 10:16:10,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809428251] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:16:10,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:16:10,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:16:10,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584602038] [2022-10-17 10:16:10,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:16:10,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:16:10,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:16:10,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:16:10,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:16:10,258 INFO L87 Difference]: Start difference. First operand 72 states and 92 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:16:10,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:16:10,280 INFO L93 Difference]: Finished difference Result 104 states and 133 transitions. [2022-10-17 10:16:10,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:16:10,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 26 [2022-10-17 10:16:10,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:16:10,283 INFO L225 Difference]: With dead ends: 104 [2022-10-17 10:16:10,284 INFO L226 Difference]: Without dead ends: 63 [2022-10-17 10:16:10,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:16:10,287 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 18 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:16:10,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 136 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:16:10,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-10-17 10:16:10,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-10-17 10:16:10,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 56 states have internal predecessors, (68), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-10-17 10:16:10,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 80 transitions. [2022-10-17 10:16:10,302 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 80 transitions. Word has length 26 [2022-10-17 10:16:10,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:16:10,303 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 80 transitions. [2022-10-17 10:16:10,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:16:10,304 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 80 transitions. [2022-10-17 10:16:10,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-10-17 10:16:10,306 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:16:10,306 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:16:10,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:16:10,307 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:16:10,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:10,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1810241430, now seen corresponding path program 1 times [2022-10-17 10:16:10,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:10,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307053904] [2022-10-17 10:16:10,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:10,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:16:10,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:10,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-10-17 10:16:10,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:10,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:16:10,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:16:10,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307053904] [2022-10-17 10:16:10,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307053904] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:16:10,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:16:10,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:16:10,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809865226] [2022-10-17 10:16:10,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:16:10,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:16:10,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:16:10,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:16:10,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:16:10,454 INFO L87 Difference]: Start difference. First operand 63 states and 80 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:16:10,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:16:10,530 INFO L93 Difference]: Finished difference Result 171 states and 223 transitions. [2022-10-17 10:16:10,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:16:10,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 31 [2022-10-17 10:16:10,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:16:10,534 INFO L225 Difference]: With dead ends: 171 [2022-10-17 10:16:10,534 INFO L226 Difference]: Without dead ends: 116 [2022-10-17 10:16:10,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:16:10,537 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 57 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:16:10,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 167 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:16:10,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-10-17 10:16:10,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 111. [2022-10-17 10:16:10,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 88 states have (on average 1.3636363636363635) internal successors, (120), 97 states have internal predecessors, (120), 12 states have call successors, (12), 10 states have call predecessors, (12), 10 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2022-10-17 10:16:10,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 144 transitions. [2022-10-17 10:16:10,565 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 144 transitions. Word has length 31 [2022-10-17 10:16:10,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:16:10,565 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 144 transitions. [2022-10-17 10:16:10,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:16:10,566 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 144 transitions. [2022-10-17 10:16:10,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-10-17 10:16:10,568 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:16:10,568 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:16:10,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:16:10,569 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:16:10,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:10,569 INFO L85 PathProgramCache]: Analyzing trace with hash 423901217, now seen corresponding path program 1 times [2022-10-17 10:16:10,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:10,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170013656] [2022-10-17 10:16:10,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:10,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:16:10,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:10,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-10-17 10:16:10,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:10,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:16:10,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:16:10,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170013656] [2022-10-17 10:16:10,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170013656] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:16:10,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:16:10,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:16:10,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164595243] [2022-10-17 10:16:10,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:16:10,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:16:10,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:16:10,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:16:10,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:16:10,796 INFO L87 Difference]: Start difference. First operand 111 states and 144 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:16:10,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:16:10,946 INFO L93 Difference]: Finished difference Result 315 states and 417 transitions. [2022-10-17 10:16:10,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:16:10,947 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2022-10-17 10:16:10,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:16:10,951 INFO L225 Difference]: With dead ends: 315 [2022-10-17 10:16:10,951 INFO L226 Difference]: Without dead ends: 212 [2022-10-17 10:16:10,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:16:10,955 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 49 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:16:10,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 380 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:16:10,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-10-17 10:16:10,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 206. [2022-10-17 10:16:10,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 161 states have (on average 1.3478260869565217) internal successors, (217), 178 states have internal predecessors, (217), 24 states have call successors, (24), 20 states have call predecessors, (24), 20 states have return successors, (26), 20 states have call predecessors, (26), 24 states have call successors, (26) [2022-10-17 10:16:10,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 267 transitions. [2022-10-17 10:16:10,996 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 267 transitions. Word has length 34 [2022-10-17 10:16:10,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:16:10,997 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 267 transitions. [2022-10-17 10:16:10,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 4 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:16:10,997 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 267 transitions. [2022-10-17 10:16:11,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-10-17 10:16:11,000 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:16:11,001 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:16:11,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:16:11,001 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:16:11,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:11,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1743336419, now seen corresponding path program 1 times [2022-10-17 10:16:11,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:11,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373757396] [2022-10-17 10:16:11,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:11,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:16:11,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:11,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:16:11,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:11,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-10-17 10:16:11,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:11,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:16:11,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:16:11,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373757396] [2022-10-17 10:16:11,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373757396] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:16:11,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:16:11,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:16:11,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169283378] [2022-10-17 10:16:11,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:16:11,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:16:11,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:16:11,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:16:11,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:16:11,176 INFO L87 Difference]: Start difference. First operand 206 states and 267 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 10:16:11,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:16:11,495 INFO L93 Difference]: Finished difference Result 560 states and 738 transitions. [2022-10-17 10:16:11,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:16:11,496 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 38 [2022-10-17 10:16:11,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:16:11,502 INFO L225 Difference]: With dead ends: 560 [2022-10-17 10:16:11,502 INFO L226 Difference]: Without dead ends: 362 [2022-10-17 10:16:11,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:16:11,507 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 97 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:16:11,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 189 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:16:11,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-10-17 10:16:11,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 350. [2022-10-17 10:16:11,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 269 states have (on average 1.304832713754647) internal successors, (351), 290 states have internal predecessors, (351), 40 states have call successors, (40), 40 states have call predecessors, (40), 40 states have return successors, (52), 40 states have call predecessors, (52), 40 states have call successors, (52) [2022-10-17 10:16:11,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 443 transitions. [2022-10-17 10:16:11,592 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 443 transitions. Word has length 38 [2022-10-17 10:16:11,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:16:11,592 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 443 transitions. [2022-10-17 10:16:11,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-10-17 10:16:11,593 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 443 transitions. [2022-10-17 10:16:11,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-10-17 10:16:11,596 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:16:11,596 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:16:11,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:16:11,597 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:16:11,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:11,597 INFO L85 PathProgramCache]: Analyzing trace with hash -385201440, now seen corresponding path program 1 times [2022-10-17 10:16:11,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:11,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618252618] [2022-10-17 10:16:11,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:11,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:16:11,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:11,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:16:11,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:11,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-17 10:16:11,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:11,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:16:11,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:16:11,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618252618] [2022-10-17 10:16:11,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618252618] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:16:11,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:16:11,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:16:11,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123860414] [2022-10-17 10:16:11,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:16:11,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:16:11,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:16:11,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:16:11,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:16:11,832 INFO L87 Difference]: Start difference. First operand 350 states and 443 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:16:12,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:16:12,069 INFO L93 Difference]: Finished difference Result 994 states and 1307 transitions. [2022-10-17 10:16:12,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:16:12,070 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-10-17 10:16:12,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:16:12,085 INFO L225 Difference]: With dead ends: 994 [2022-10-17 10:16:12,085 INFO L226 Difference]: Without dead ends: 652 [2022-10-17 10:16:12,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:16:12,098 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 108 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:16:12,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 127 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:16:12,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2022-10-17 10:16:12,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 650. [2022-10-17 10:16:12,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 505 states have (on average 1.2811881188118812) internal successors, (647), 534 states have internal predecessors, (647), 76 states have call successors, (76), 76 states have call predecessors, (76), 68 states have return successors, (108), 68 states have call predecessors, (108), 76 states have call successors, (108) [2022-10-17 10:16:12,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 831 transitions. [2022-10-17 10:16:12,191 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 831 transitions. Word has length 44 [2022-10-17 10:16:12,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:16:12,192 INFO L495 AbstractCegarLoop]: Abstraction has 650 states and 831 transitions. [2022-10-17 10:16:12,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:16:12,192 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 831 transitions. [2022-10-17 10:16:12,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-10-17 10:16:12,201 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:16:12,201 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:16:12,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:16:12,202 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:16:12,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:12,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1303742302, now seen corresponding path program 1 times [2022-10-17 10:16:12,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:12,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556976059] [2022-10-17 10:16:12,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:12,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:16:12,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:12,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:16:12,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:12,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-17 10:16:12,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:12,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:16:12,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:16:12,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556976059] [2022-10-17 10:16:12,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556976059] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:16:12,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:16:12,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:16:12,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109063506] [2022-10-17 10:16:12,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:16:12,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:16:12,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:16:12,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:16:12,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:16:12,363 INFO L87 Difference]: Start difference. First operand 650 states and 831 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:16:12,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:16:12,671 INFO L93 Difference]: Finished difference Result 1428 states and 1860 transitions. [2022-10-17 10:16:12,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:16:12,672 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-10-17 10:16:12,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:16:12,678 INFO L225 Difference]: With dead ends: 1428 [2022-10-17 10:16:12,678 INFO L226 Difference]: Without dead ends: 786 [2022-10-17 10:16:12,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:16:12,682 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 77 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:16:12,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 214 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:16:12,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2022-10-17 10:16:12,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 690. [2022-10-17 10:16:12,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 541 states have (on average 1.2643253234750462) internal successors, (684), 572 states have internal predecessors, (684), 78 states have call successors, (78), 76 states have call predecessors, (78), 70 states have return successors, (114), 70 states have call predecessors, (114), 78 states have call successors, (114) [2022-10-17 10:16:12,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 876 transitions. [2022-10-17 10:16:12,772 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 876 transitions. Word has length 44 [2022-10-17 10:16:12,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:16:12,773 INFO L495 AbstractCegarLoop]: Abstraction has 690 states and 876 transitions. [2022-10-17 10:16:12,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:16:12,773 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 876 transitions. [2022-10-17 10:16:12,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-10-17 10:16:12,775 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:16:12,775 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:16:12,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:16:12,776 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:16:12,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:12,776 INFO L85 PathProgramCache]: Analyzing trace with hash -284605600, now seen corresponding path program 1 times [2022-10-17 10:16:12,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:12,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173526328] [2022-10-17 10:16:12,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:12,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:16:12,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:12,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-10-17 10:16:12,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:12,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-10-17 10:16:12,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:12,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:16:12,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:16:12,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173526328] [2022-10-17 10:16:12,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173526328] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:16:12,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:16:12,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:16:12,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627318156] [2022-10-17 10:16:12,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:16:12,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:16:12,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:16:12,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:16:12,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:16:12,910 INFO L87 Difference]: Start difference. First operand 690 states and 876 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:16:13,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:16:13,381 INFO L93 Difference]: Finished difference Result 1358 states and 1734 transitions. [2022-10-17 10:16:13,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 10:16:13,382 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-10-17 10:16:13,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:16:13,388 INFO L225 Difference]: With dead ends: 1358 [2022-10-17 10:16:13,388 INFO L226 Difference]: Without dead ends: 676 [2022-10-17 10:16:13,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-10-17 10:16:13,393 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 223 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:16:13,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 202 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 10:16:13,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2022-10-17 10:16:13,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 538. [2022-10-17 10:16:13,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 421 states have (on average 1.2470308788598574) internal successors, (525), 446 states have internal predecessors, (525), 60 states have call successors, (60), 60 states have call predecessors, (60), 56 states have return successors, (74), 56 states have call predecessors, (74), 60 states have call successors, (74) [2022-10-17 10:16:13,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 659 transitions. [2022-10-17 10:16:13,467 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 659 transitions. Word has length 44 [2022-10-17 10:16:13,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:16:13,468 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 659 transitions. [2022-10-17 10:16:13,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:16:13,468 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 659 transitions. [2022-10-17 10:16:13,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-10-17 10:16:13,470 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:16:13,470 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:16:13,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 10:16:13,470 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:16:13,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:13,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1618658684, now seen corresponding path program 1 times [2022-10-17 10:16:13,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:13,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176567603] [2022-10-17 10:16:13,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:13,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:16:13,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:13,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:16:13,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:13,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:16:13,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:13,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-10-17 10:16:13,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:13,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:16:13,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:16:13,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176567603] [2022-10-17 10:16:13,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176567603] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:16:13,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:16:13,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:16:13,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382123023] [2022-10-17 10:16:13,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:16:13,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:16:13,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:16:13,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:16:13,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:16:13,652 INFO L87 Difference]: Start difference. First operand 538 states and 659 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-17 10:16:14,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:16:14,094 INFO L93 Difference]: Finished difference Result 1070 states and 1354 transitions. [2022-10-17 10:16:14,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:16:14,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 48 [2022-10-17 10:16:14,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:16:14,103 INFO L225 Difference]: With dead ends: 1070 [2022-10-17 10:16:14,104 INFO L226 Difference]: Without dead ends: 1068 [2022-10-17 10:16:14,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:16:14,107 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 217 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:16:14,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 153 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 10:16:14,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2022-10-17 10:16:14,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 841. [2022-10-17 10:16:14,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 667 states have (on average 1.2608695652173914) internal successors, (841), 720 states have internal predecessors, (841), 91 states have call successors, (91), 71 states have call predecessors, (91), 82 states have return successors, (137), 86 states have call predecessors, (137), 91 states have call successors, (137) [2022-10-17 10:16:14,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1069 transitions. [2022-10-17 10:16:14,224 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1069 transitions. Word has length 48 [2022-10-17 10:16:14,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:16:14,227 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 1069 transitions. [2022-10-17 10:16:14,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 3 states have internal predecessors, (41), 1 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-17 10:16:14,228 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1069 transitions. [2022-10-17 10:16:14,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-10-17 10:16:14,235 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:16:14,235 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:16:14,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-10-17 10:16:14,235 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:16:14,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:14,236 INFO L85 PathProgramCache]: Analyzing trace with hash 305159939, now seen corresponding path program 1 times [2022-10-17 10:16:14,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:14,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935951855] [2022-10-17 10:16:14,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:14,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:16:14,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:14,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:16:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:14,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-10-17 10:16:14,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:14,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-10-17 10:16:14,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:14,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-10-17 10:16:14,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:14,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-10-17 10:16:14,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:16:14,378 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-17 10:16:14,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:16:14,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935951855] [2022-10-17 10:16:14,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935951855] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:16:14,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:16:14,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:16:14,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274616572] [2022-10-17 10:16:14,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:16:14,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:16:14,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:16:14,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:16:14,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:16:14,383 INFO L87 Difference]: Start difference. First operand 841 states and 1069 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 4 states have internal predecessors, (65), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2022-10-17 10:16:14,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:16:14,833 INFO L93 Difference]: Finished difference Result 1437 states and 1821 transitions. [2022-10-17 10:16:14,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-17 10:16:14,835 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 4 states have internal predecessors, (65), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 78 [2022-10-17 10:16:14,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:16:14,841 INFO L225 Difference]: With dead ends: 1437 [2022-10-17 10:16:14,842 INFO L226 Difference]: Without dead ends: 604 [2022-10-17 10:16:14,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2022-10-17 10:16:14,849 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 261 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:16:14,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 221 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 10:16:14,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2022-10-17 10:16:14,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 558. [2022-10-17 10:16:14,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 439 states have (on average 1.2369020501138952) internal successors, (543), 474 states have internal predecessors, (543), 61 states have call successors, (61), 51 states have call predecessors, (61), 57 states have return successors, (87), 57 states have call predecessors, (87), 61 states have call successors, (87) [2022-10-17 10:16:14,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 691 transitions. [2022-10-17 10:16:14,940 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 691 transitions. Word has length 78 [2022-10-17 10:16:14,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:16:14,940 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 691 transitions. [2022-10-17 10:16:14,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 4 states have internal predecessors, (65), 4 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2022-10-17 10:16:14,941 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 691 transitions. [2022-10-17 10:16:14,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-10-17 10:16:14,943 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:16:14,944 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:16:14,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-17 10:16:14,944 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-10-17 10:16:14,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:14,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1210131555, now seen corresponding path program 1 times [2022-10-17 10:16:14,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:16:14,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089886931] [2022-10-17 10:16:14,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:14,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:16:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:16:14,976 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 10:16:15,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 10:16:15,051 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 10:16:15,052 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-17 10:16:15,053 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-10-17 10:16:15,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-10-17 10:16:15,059 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:16:15,064 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-17 10:16:15,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.10 10:16:15 BoogieIcfgContainer [2022-10-17 10:16:15,187 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-17 10:16:15,190 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 10:16:15,190 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 10:16:15,191 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 10:16:15,191 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:16:09" (3/4) ... [2022-10-17 10:16:15,193 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-10-17 10:16:15,301 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ab3c50-8396-4b7c-88e2-b348f124c376/bin/uautomizer-J5u9QxTXDZ/witness.graphml [2022-10-17 10:16:15,301 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 10:16:15,302 INFO L158 Benchmark]: Toolchain (without parser) took 7662.23ms. Allocated memory was 94.4MB in the beginning and 169.9MB in the end (delta: 75.5MB). Free memory was 54.7MB in the beginning and 71.4MB in the end (delta: -16.7MB). Peak memory consumption was 59.5MB. Max. memory is 16.1GB. [2022-10-17 10:16:15,303 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 94.4MB. Free memory is still 72.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:16:15,303 INFO L158 Benchmark]: CACSL2BoogieTranslator took 702.11ms. Allocated memory is still 94.4MB. Free memory was 54.5MB in the beginning and 61.5MB in the end (delta: -7.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-10-17 10:16:15,304 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.53ms. Allocated memory is still 94.4MB. Free memory was 61.5MB in the beginning and 59.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 10:16:15,304 INFO L158 Benchmark]: Boogie Preprocessor took 49.75ms. Allocated memory is still 94.4MB. Free memory was 59.2MB in the beginning and 57.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 10:16:15,304 INFO L158 Benchmark]: RCFGBuilder took 658.83ms. Allocated memory is still 94.4MB. Free memory was 57.4MB in the beginning and 40.0MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-10-17 10:16:15,305 INFO L158 Benchmark]: TraceAbstraction took 6050.86ms. Allocated memory was 94.4MB in the beginning and 169.9MB in the end (delta: 75.5MB). Free memory was 39.3MB in the beginning and 78.8MB in the end (delta: -39.5MB). Peak memory consumption was 36.7MB. Max. memory is 16.1GB. [2022-10-17 10:16:15,305 INFO L158 Benchmark]: Witness Printer took 111.30ms. Allocated memory is still 169.9MB. Free memory was 78.8MB in the beginning and 71.4MB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 10:16:15,308 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 94.4MB. Free memory is still 72.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 702.11ms. Allocated memory is still 94.4MB. Free memory was 54.5MB in the beginning and 61.5MB in the end (delta: -7.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.53ms. Allocated memory is still 94.4MB. Free memory was 61.5MB in the beginning and 59.2MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.75ms. Allocated memory is still 94.4MB. Free memory was 59.2MB in the beginning and 57.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 658.83ms. Allocated memory is still 94.4MB. Free memory was 57.4MB in the beginning and 40.0MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 6050.86ms. Allocated memory was 94.4MB in the beginning and 169.9MB in the end (delta: 75.5MB). Free memory was 39.3MB in the beginning and 78.8MB in the end (delta: -39.5MB). Peak memory consumption was 36.7MB. Max. memory is 16.1GB. * Witness Printer took 111.30ms. Allocated memory is still 169.9MB. Free memory was 78.8MB in the beginning and 71.4MB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 910]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L57] int waterLevel = 1; [L58] int methaneLevelCritical = 0; [L320] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L555] int cleanupTimeShifts = 4; [L661] int pumpRunning = 0; [L662] int systemActive = 1; [L915] int methAndRunningLastTime ; VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L633] int retValue_acc ; [L634] int tmp ; [L638] FCALL select_helpers() [L639] FCALL select_features() [L640] CALL, EXPR valid_product() [L546] int retValue_acc ; [L549] retValue_acc = 1 [L550] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L640] RET, EXPR valid_product() [L640] tmp = valid_product() [L642] COND TRUE \read(tmp) [L644] FCALL setup() [L645] CALL runTest() [L626] CALL __utac_acc__Specification2_spec__1() [L920] methAndRunningLastTime = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L626] RET __utac_acc__Specification2_spec__1() [L627] CALL test() [L838] int splverifierCounter ; [L839] int tmp ; [L840] int tmp___0 ; [L841] int tmp___1 ; [L842] int tmp___2 ; [L845] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L847] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L849] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L855] tmp = __VERIFIER_nondet_int() [L857] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=1] [L859] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L75] COND TRUE waterLevel < 2 [L76] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L859] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=2] [L865] tmp___0 = __VERIFIER_nondet_int() [L867] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=1, waterLevel=2] [L869] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L87] COND FALSE !(\read(methaneLevelCritical)) [L90] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L869] RET changeMethaneLevel() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=1, waterLevel=2] [L875] tmp___2 = __VERIFIER_nondet_int() [L877] COND FALSE !(\read(tmp___2)) [L883] tmp___1 = __VERIFIER_nondet_int() [L885] COND FALSE !(\read(tmp___1)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=1, tmp___1=0, tmp___2=0, waterLevel=2] [L894] CALL timeShift() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L669] COND FALSE !(\read(pumpRunning)) VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L676] COND TRUE \read(systemActive) [L678] CALL processEnvironment() [L698] int tmp ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L701] COND TRUE ! pumpRunning [L703] CALL, EXPR isHighWaterLevel() [L795] int retValue_acc ; [L796] int tmp ; [L797] int tmp___0 ; [L801] CALL, EXPR isHighWaterSensorDry() [L137] int retValue_acc ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L140] COND FALSE !(waterLevel < 2) [L144] retValue_acc = 0 [L145] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L801] RET, EXPR isHighWaterSensorDry() [L801] tmp = isHighWaterSensorDry() [L803] COND FALSE !(\read(tmp)) [L806] tmp___0 = 1 VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L808] retValue_acc = tmp___0 [L809] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L703] RET, EXPR isHighWaterLevel() [L703] tmp = isHighWaterLevel() [L705] COND TRUE \read(tmp) [L707] CALL activatePump() [L726] pumpRunning = 1 VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L707] RET activatePump() [L678] RET processEnvironment() [L684] CALL __utac_acc__Specification2_spec__2() [L925] int tmp ; [L926] int tmp___0 ; VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L930] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L96] int retValue_acc ; [L99] retValue_acc = methaneLevelCritical [L100] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L930] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L930] tmp = isMethaneLevelCritical() [L932] COND TRUE \read(tmp) [L934] CALL, EXPR isPumpRunning() [L750] int retValue_acc ; [L753] retValue_acc = pumpRunning [L754] return (retValue_acc); VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L934] RET, EXPR isPumpRunning() [L934] tmp___0 = isPumpRunning() [L936] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=0, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L937] COND FALSE !(\read(methAndRunningLastTime)) [L942] methAndRunningLastTime = 1 VAL [\old(methAndRunningLastTime)=0, \old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L684] RET __utac_acc__Specification2_spec__2() [L894] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=1, tmp___1=0, tmp___2=0, waterLevel=2] [L847] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=1, tmp___1=0, tmp___2=0, waterLevel=2] [L849] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=1, tmp___1=0, tmp___2=0, waterLevel=2] [L855] tmp = __VERIFIER_nondet_int() [L857] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=1, tmp___1=0, tmp___2=0, waterLevel=2] [L865] tmp___0 = __VERIFIER_nondet_int() [L867] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L875] tmp___2 = __VERIFIER_nondet_int() [L877] COND FALSE !(\read(tmp___2)) [L883] tmp___1 = __VERIFIER_nondet_int() [L885] COND FALSE !(\read(tmp___1)) VAL [cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___1=0, tmp___2=0, waterLevel=2] [L894] CALL timeShift() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L669] COND TRUE \read(pumpRunning) [L671] CALL lowerWaterLevel() [L63] COND TRUE waterLevel > 0 [L64] waterLevel = waterLevel - 1 VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L671] RET lowerWaterLevel() [L676] COND TRUE \read(systemActive) [L678] CALL processEnvironment() [L698] int tmp ; VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L701] COND FALSE !(! pumpRunning) VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L716] FCALL processEnvironment__wrappee__base() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L678] RET processEnvironment() [L684] CALL __utac_acc__Specification2_spec__2() [L925] int tmp ; [L926] int tmp___0 ; VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L930] CALL, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L96] int retValue_acc ; [L99] retValue_acc = methaneLevelCritical [L100] return (retValue_acc); VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L930] RET, EXPR isMethaneLevelCritical() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L930] tmp = isMethaneLevelCritical() [L932] COND TRUE \read(tmp) [L934] CALL, EXPR isPumpRunning() [L750] int retValue_acc ; [L753] retValue_acc = pumpRunning [L754] return (retValue_acc); VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L934] RET, EXPR isPumpRunning() [L934] tmp___0 = isPumpRunning() [L936] COND TRUE \read(tmp___0) VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=1] [L937] COND TRUE \read(methAndRunningLastTime) [L939] CALL __automaton_fail() [L910] reach_error() VAL [\old(methAndRunningLastTime)=1, \old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methAndRunningLastTime=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 81 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.8s, OverallIterations: 11, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1136 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1107 mSDsluCounter, 1890 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1018 mSDsCounter, 293 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1083 IncrementalHoareTripleChecker+Invalid, 1376 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 293 mSolverCounterUnsat, 872 mSDtfsCounter, 1083 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 120 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=841occurred in iteration=9, InterpolantAutomatonStates: 68, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 532 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 492 NumberOfCodeBlocks, 492 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 402 ConstructedInterpolants, 0 QuantifiedInterpolants, 802 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 22/22 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-10-17 10:16:15,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72ab3c50-8396-4b7c-88e2-b348f124c376/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE