./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product50.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c490f8-7418-44a1-a400-dc3242f76dde/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c490f8-7418-44a1-a400-dc3242f76dde/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c490f8-7418-44a1-a400-dc3242f76dde/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c490f8-7418-44a1-a400-dc3242f76dde/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product50.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c490f8-7418-44a1-a400-dc3242f76dde/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c490f8-7418-44a1-a400-dc3242f76dde/bin/uautomizer-uyxdKDjOR8 --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 7291fd5b9449f17989061ec30bdd7b74e8732c40c8095270267a47672f4a66be --- 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-2329fc7 [2022-12-13 14:50:49,899 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 14:50:49,901 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 14:50:49,919 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 14:50:49,920 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 14:50:49,921 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 14:50:49,922 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 14:50:49,923 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 14:50:49,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 14:50:49,925 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 14:50:49,926 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 14:50:49,927 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 14:50:49,928 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 14:50:49,929 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 14:50:49,930 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 14:50:49,931 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 14:50:49,931 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 14:50:49,932 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 14:50:49,933 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 14:50:49,935 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 14:50:49,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 14:50:49,937 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 14:50:49,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 14:50:49,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 14:50:49,942 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 14:50:49,943 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 14:50:49,943 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 14:50:49,944 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 14:50:49,944 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 14:50:49,945 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 14:50:49,945 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 14:50:49,946 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 14:50:49,946 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 14:50:49,947 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 14:50:49,948 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 14:50:49,948 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 14:50:49,949 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 14:50:49,949 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 14:50:49,949 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 14:50:49,950 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 14:50:49,951 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 14:50:49,951 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c490f8-7418-44a1-a400-dc3242f76dde/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 14:50:49,970 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 14:50:49,971 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 14:50:49,971 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 14:50:49,971 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 14:50:49,972 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 14:50:49,972 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 14:50:49,972 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 14:50:49,972 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 14:50:49,973 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 14:50:49,973 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 14:50:49,973 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 14:50:49,973 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 14:50:49,973 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 14:50:49,973 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 14:50:49,973 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 14:50:49,973 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 14:50:49,974 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 14:50:49,974 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 14:50:49,974 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 14:50:49,974 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 14:50:49,974 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 14:50:49,974 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 14:50:49,974 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 14:50:49,974 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 14:50:49,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:50:49,974 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 14:50:49,975 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 14:50:49,975 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 14:50:49,975 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 14:50:49,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 14:50:49,975 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 14:50:49,975 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 14:50:49,975 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 14:50:49,975 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 14:50:49,976 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 14:50:49,976 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_a2c490f8-7418-44a1-a400-dc3242f76dde/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c490f8-7418-44a1-a400-dc3242f76dde/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7291fd5b9449f17989061ec30bdd7b74e8732c40c8095270267a47672f4a66be [2022-12-13 14:50:50,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 14:50:50,223 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 14:50:50,225 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 14:50:50,226 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 14:50:50,226 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 14:50:50,227 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c490f8-7418-44a1-a400-dc3242f76dde/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/product-lines/minepump_spec1_product50.cil.c [2022-12-13 14:50:52,800 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 14:50:52,960 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 14:50:52,960 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c490f8-7418-44a1-a400-dc3242f76dde/sv-benchmarks/c/product-lines/minepump_spec1_product50.cil.c [2022-12-13 14:50:52,967 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c490f8-7418-44a1-a400-dc3242f76dde/bin/uautomizer-uyxdKDjOR8/data/472e8f73f/7ddc0a7a3425428b82eb072c3932f21a/FLAG9197556ff [2022-12-13 14:50:52,979 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c490f8-7418-44a1-a400-dc3242f76dde/bin/uautomizer-uyxdKDjOR8/data/472e8f73f/7ddc0a7a3425428b82eb072c3932f21a [2022-12-13 14:50:52,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 14:50:52,982 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 14:50:52,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 14:50:52,983 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 14:50:52,985 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 14:50:52,986 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:50:52" (1/1) ... [2022-12-13 14:50:52,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47099fe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:50:52, skipping insertion in model container [2022-12-13 14:50:52,987 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:50:52" (1/1) ... [2022-12-13 14:50:52,992 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 14:50:53,019 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 14:50:53,165 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c490f8-7418-44a1-a400-dc3242f76dde/sv-benchmarks/c/product-lines/minepump_spec1_product50.cil.c[6254,6267] [2022-12-13 14:50:53,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:50:53,239 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 14:50:53,265 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c490f8-7418-44a1-a400-dc3242f76dde/sv-benchmarks/c/product-lines/minepump_spec1_product50.cil.c[6254,6267] [2022-12-13 14:50:53,304 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:50:53,323 INFO L208 MainTranslator]: Completed translation [2022-12-13 14:50:53,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:50:53 WrapperNode [2022-12-13 14:50:53,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 14:50:53,324 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 14:50:53,325 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 14:50:53,325 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 14:50:53,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:50:53" (1/1) ... [2022-12-13 14:50:53,343 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:50:53" (1/1) ... [2022-12-13 14:50:53,370 INFO L138 Inliner]: procedures = 56, calls = 99, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 198 [2022-12-13 14:50:53,370 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 14:50:53,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 14:50:53,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 14:50:53,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 14:50:53,378 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:50:53" (1/1) ... [2022-12-13 14:50:53,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:50:53" (1/1) ... [2022-12-13 14:50:53,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:50:53" (1/1) ... [2022-12-13 14:50:53,381 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:50:53" (1/1) ... [2022-12-13 14:50:53,385 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:50:53" (1/1) ... [2022-12-13 14:50:53,390 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:50:53" (1/1) ... [2022-12-13 14:50:53,391 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:50:53" (1/1) ... [2022-12-13 14:50:53,392 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:50:53" (1/1) ... [2022-12-13 14:50:53,395 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 14:50:53,396 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 14:50:53,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 14:50:53,396 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 14:50:53,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:50:53" (1/1) ... [2022-12-13 14:50:53,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:50:53,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c490f8-7418-44a1-a400-dc3242f76dde/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:50:53,426 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c490f8-7418-44a1-a400-dc3242f76dde/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 14:50:53,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c490f8-7418-44a1-a400-dc3242f76dde/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 14:50:53,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 14:50:53,461 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-12-13 14:50:53,461 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-12-13 14:50:53,461 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-12-13 14:50:53,461 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-12-13 14:50:53,462 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-12-13 14:50:53,462 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-12-13 14:50:53,462 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2022-12-13 14:50:53,462 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2022-12-13 14:50:53,462 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2022-12-13 14:50:53,462 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2022-12-13 14:50:53,462 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-12-13 14:50:53,463 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-12-13 14:50:53,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 14:50:53,463 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-12-13 14:50:53,463 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-12-13 14:50:53,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 14:50:53,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 14:50:53,526 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 14:50:53,528 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 14:50:53,706 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 14:50:53,711 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 14:50:53,711 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 14:50:53,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:50:53 BoogieIcfgContainer [2022-12-13 14:50:53,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 14:50:53,716 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 14:50:53,716 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 14:50:53,719 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 14:50:53,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 02:50:52" (1/3) ... [2022-12-13 14:50:53,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fed5225 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:50:53, skipping insertion in model container [2022-12-13 14:50:53,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:50:53" (2/3) ... [2022-12-13 14:50:53,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fed5225 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:50:53, skipping insertion in model container [2022-12-13 14:50:53,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:50:53" (3/3) ... [2022-12-13 14:50:53,722 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product50.cil.c [2022-12-13 14:50:53,741 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 14:50:53,741 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 14:50:53,778 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 14:50:53,783 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;@4e44dec4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 14:50:53,783 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 14:50:53,786 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 67 states have (on average 1.3880597014925373) internal successors, (93), 75 states have internal predecessors, (93), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2022-12-13 14:50:53,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-13 14:50:53,792 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:50:53,793 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:50:53,793 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:50:53,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:50:53,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1284973020, now seen corresponding path program 1 times [2022-12-13 14:50:53,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:50:53,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971782797] [2022-12-13 14:50:53,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:50:53,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:50:53,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:53,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 14:50:53,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:53,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:50:53,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:50:53,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971782797] [2022-12-13 14:50:53,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971782797] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:50:53,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:50:53,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 14:50:53,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423069942] [2022-12-13 14:50:53,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:50:53,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 14:50:53,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:50:53,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 14:50:53,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 14:50:53,967 INFO L87 Difference]: Start difference. First operand has 87 states, 67 states have (on average 1.3880597014925373) internal successors, (93), 75 states have internal predecessors, (93), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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) [2022-12-13 14:50:53,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:50:53,997 INFO L93 Difference]: Finished difference Result 166 states and 225 transitions. [2022-12-13 14:50:53,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 14:50:53,998 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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 23 [2022-12-13 14:50:53,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:50:54,007 INFO L225 Difference]: With dead ends: 166 [2022-12-13 14:50:54,007 INFO L226 Difference]: Without dead ends: 78 [2022-12-13 14:50:54,010 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 [2022-12-13 14:50:54,014 INFO L413 NwaCegarLoop]: 109 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, 109 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 [2022-12-13 14:50:54,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:50:54,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-12-13 14:50:54,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2022-12-13 14:50:54,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 60 states have (on average 1.3166666666666667) internal successors, (79), 67 states have internal predecessors, (79), 11 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-13 14:50:54,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2022-12-13 14:50:54,055 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 23 [2022-12-13 14:50:54,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:50:54,056 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2022-12-13 14:50:54,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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) [2022-12-13 14:50:54,056 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2022-12-13 14:50:54,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-13 14:50:54,059 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:50:54,059 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:50:54,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 14:50:54,059 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:50:54,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:50:54,060 INFO L85 PathProgramCache]: Analyzing trace with hash -489560550, now seen corresponding path program 1 times [2022-12-13 14:50:54,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:50:54,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949222579] [2022-12-13 14:50:54,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:50:54,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:50:54,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:54,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 14:50:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:54,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:50:54,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:50:54,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949222579] [2022-12-13 14:50:54,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949222579] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:50:54,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:50:54,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:50:54,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591130258] [2022-12-13 14:50:54,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:50:54,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:50:54,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:50:54,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:50:54,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:50:54,165 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2022-12-13 14:50:54,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:50:54,182 INFO L93 Difference]: Finished difference Result 121 states and 155 transitions. [2022-12-13 14:50:54,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:50:54,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 24 [2022-12-13 14:50:54,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:50:54,184 INFO L225 Difference]: With dead ends: 121 [2022-12-13 14:50:54,184 INFO L226 Difference]: Without dead ends: 69 [2022-12-13 14:50:54,185 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 [2022-12-13 14:50:54,187 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 13 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 157 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 [2022-12-13 14:50:54,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 157 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:50:54,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-12-13 14:50:54,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-12-13 14:50:54,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 54 states have (on average 1.3333333333333333) internal successors, (72), 61 states have internal predecessors, (72), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-13 14:50:54,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 88 transitions. [2022-12-13 14:50:54,198 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 88 transitions. Word has length 24 [2022-12-13 14:50:54,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:50:54,199 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 88 transitions. [2022-12-13 14:50:54,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2022-12-13 14:50:54,199 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 88 transitions. [2022-12-13 14:50:54,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-13 14:50:54,201 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:50:54,201 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] [2022-12-13 14:50:54,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 14:50:54,201 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:50:54,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:50:54,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1301531266, now seen corresponding path program 1 times [2022-12-13 14:50:54,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:50:54,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620777131] [2022-12-13 14:50:54,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:50:54,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:50:54,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:54,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 14:50:54,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:54,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:50:54,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:50:54,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620777131] [2022-12-13 14:50:54,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620777131] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:50:54,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:50:54,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 14:50:54,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427226813] [2022-12-13 14:50:54,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:50:54,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:50:54,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:50:54,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:50:54,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 14:50:54,296 INFO L87 Difference]: Start difference. First operand 69 states and 88 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2022-12-13 14:50:54,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:50:54,313 INFO L93 Difference]: Finished difference Result 131 states and 170 transitions. [2022-12-13 14:50:54,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:50:54,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 29 [2022-12-13 14:50:54,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:50:54,314 INFO L225 Difference]: With dead ends: 131 [2022-12-13 14:50:54,314 INFO L226 Difference]: Without dead ends: 69 [2022-12-13 14:50:54,315 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 [2022-12-13 14:50:54,315 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 68 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:50:54,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 86 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:50:54,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-12-13 14:50:54,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-12-13 14:50:54,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 54 states have (on average 1.3148148148148149) internal successors, (71), 61 states have internal predecessors, (71), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-13 14:50:54,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 87 transitions. [2022-12-13 14:50:54,323 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 87 transitions. Word has length 29 [2022-12-13 14:50:54,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:50:54,323 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 87 transitions. [2022-12-13 14:50:54,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2022-12-13 14:50:54,323 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 87 transitions. [2022-12-13 14:50:54,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-12-13 14:50:54,324 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:50:54,324 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] [2022-12-13 14:50:54,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 14:50:54,324 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:50:54,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:50:54,325 INFO L85 PathProgramCache]: Analyzing trace with hash 774759404, now seen corresponding path program 1 times [2022-12-13 14:50:54,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:50:54,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921474413] [2022-12-13 14:50:54,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:50:54,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:50:54,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:54,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 14:50:54,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:54,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:50:54,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:54,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 14:50:54,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:54,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:50:54,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:50:54,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921474413] [2022-12-13 14:50:54,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921474413] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:50:54,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:50:54,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 14:50:54,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120584992] [2022-12-13 14:50:54,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:50:54,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:50:54,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:50:54,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:50:54,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:50:54,414 INFO L87 Difference]: Start difference. First operand 69 states and 87 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 14:50:54,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:50:54,585 INFO L93 Difference]: Finished difference Result 203 states and 256 transitions. [2022-12-13 14:50:54,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 14:50:54,585 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 39 [2022-12-13 14:50:54,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:50:54,586 INFO L225 Difference]: With dead ends: 203 [2022-12-13 14:50:54,586 INFO L226 Difference]: Without dead ends: 141 [2022-12-13 14:50:54,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:50:54,588 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 155 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:50:54,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 267 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:50:54,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-12-13 14:50:54,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 135. [2022-12-13 14:50:54,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 104 states have (on average 1.2596153846153846) internal successors, (131), 111 states have internal predecessors, (131), 14 states have call successors, (14), 13 states have call predecessors, (14), 16 states have return successors, (19), 15 states have call predecessors, (19), 14 states have call successors, (19) [2022-12-13 14:50:54,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 164 transitions. [2022-12-13 14:50:54,604 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 164 transitions. Word has length 39 [2022-12-13 14:50:54,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:50:54,604 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 164 transitions. [2022-12-13 14:50:54,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 14:50:54,604 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 164 transitions. [2022-12-13 14:50:54,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-12-13 14:50:54,605 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:50:54,605 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] [2022-12-13 14:50:54,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 14:50:54,606 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:50:54,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:50:54,606 INFO L85 PathProgramCache]: Analyzing trace with hash -2013400487, now seen corresponding path program 1 times [2022-12-13 14:50:54,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:50:54,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425454949] [2022-12-13 14:50:54,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:50:54,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:50:54,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:54,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 14:50:54,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:54,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 14:50:54,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:54,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:50:54,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:50:54,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425454949] [2022-12-13 14:50:54,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425454949] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:50:54,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:50:54,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 14:50:54,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065888663] [2022-12-13 14:50:54,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:50:54,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 14:50:54,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:50:54,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 14:50:54,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 14:50:54,698 INFO L87 Difference]: Start difference. First operand 135 states and 164 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 14:50:54,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:50:54,825 INFO L93 Difference]: Finished difference Result 271 states and 333 transitions. [2022-12-13 14:50:54,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 14:50:54,826 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 43 [2022-12-13 14:50:54,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:50:54,828 INFO L225 Difference]: With dead ends: 271 [2022-12-13 14:50:54,828 INFO L226 Difference]: Without dead ends: 143 [2022-12-13 14:50:54,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-12-13 14:50:54,830 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 61 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:50:54,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 340 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:50:54,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-12-13 14:50:54,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 138. [2022-12-13 14:50:54,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 107 states have (on average 1.2523364485981308) internal successors, (134), 114 states have internal predecessors, (134), 14 states have call successors, (14), 13 states have call predecessors, (14), 16 states have return successors, (19), 15 states have call predecessors, (19), 14 states have call successors, (19) [2022-12-13 14:50:54,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 167 transitions. [2022-12-13 14:50:54,852 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 167 transitions. Word has length 43 [2022-12-13 14:50:54,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:50:54,853 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 167 transitions. [2022-12-13 14:50:54,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 14:50:54,853 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 167 transitions. [2022-12-13 14:50:54,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-12-13 14:50:54,854 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:50:54,854 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:50:54,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 14:50:54,855 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:50:54,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:50:54,855 INFO L85 PathProgramCache]: Analyzing trace with hash 287422103, now seen corresponding path program 1 times [2022-12-13 14:50:54,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:50:54,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489492379] [2022-12-13 14:50:54,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:50:54,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:50:54,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:54,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 14:50:54,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:54,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 14:50:54,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:54,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:50:54,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:50:54,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489492379] [2022-12-13 14:50:54,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489492379] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:50:54,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:50:54,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 14:50:54,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673357713] [2022-12-13 14:50:54,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:50:54,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 14:50:54,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:50:54,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 14:50:54,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 14:50:54,958 INFO L87 Difference]: Start difference. First operand 138 states and 167 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 14:50:55,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:50:55,076 INFO L93 Difference]: Finished difference Result 282 states and 348 transitions. [2022-12-13 14:50:55,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 14:50:55,077 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 43 [2022-12-13 14:50:55,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:50:55,078 INFO L225 Difference]: With dead ends: 282 [2022-12-13 14:50:55,078 INFO L226 Difference]: Without dead ends: 151 [2022-12-13 14:50:55,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-12-13 14:50:55,079 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 135 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:50:55,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 261 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:50:55,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-12-13 14:50:55,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 140. [2022-12-13 14:50:55,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 109 states have (on average 1.2477064220183487) internal successors, (136), 116 states have internal predecessors, (136), 14 states have call successors, (14), 13 states have call predecessors, (14), 16 states have return successors, (19), 15 states have call predecessors, (19), 14 states have call successors, (19) [2022-12-13 14:50:55,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 169 transitions. [2022-12-13 14:50:55,089 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 169 transitions. Word has length 43 [2022-12-13 14:50:55,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:50:55,090 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 169 transitions. [2022-12-13 14:50:55,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 14:50:55,090 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 169 transitions. [2022-12-13 14:50:55,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-12-13 14:50:55,091 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:50:55,091 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] [2022-12-13 14:50:55,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 14:50:55,091 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:50:55,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:50:55,091 INFO L85 PathProgramCache]: Analyzing trace with hash -530226347, now seen corresponding path program 1 times [2022-12-13 14:50:55,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:50:55,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506480111] [2022-12-13 14:50:55,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:50:55,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:50:55,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:55,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 14:50:55,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:55,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 14:50:55,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:55,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:50:55,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:50:55,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506480111] [2022-12-13 14:50:55,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506480111] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:50:55,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:50:55,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 14:50:55,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547851213] [2022-12-13 14:50:55,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:50:55,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:50:55,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:50:55,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:50:55,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 14:50:55,150 INFO L87 Difference]: Start difference. First operand 140 states and 169 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 14:50:55,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:50:55,305 INFO L93 Difference]: Finished difference Result 396 states and 500 transitions. [2022-12-13 14:50:55,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 14:50:55,305 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 43 [2022-12-13 14:50:55,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:50:55,308 INFO L225 Difference]: With dead ends: 396 [2022-12-13 14:50:55,308 INFO L226 Difference]: Without dead ends: 263 [2022-12-13 14:50:55,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:50:55,309 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 191 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:50:55,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 284 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:50:55,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-12-13 14:50:55,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 255. [2022-12-13 14:50:55,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 196 states have (on average 1.239795918367347) internal successors, (243), 207 states have internal predecessors, (243), 29 states have call successors, (29), 28 states have call predecessors, (29), 29 states have return successors, (44), 29 states have call predecessors, (44), 29 states have call successors, (44) [2022-12-13 14:50:55,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 316 transitions. [2022-12-13 14:50:55,328 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 316 transitions. Word has length 43 [2022-12-13 14:50:55,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:50:55,329 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 316 transitions. [2022-12-13 14:50:55,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 14:50:55,329 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 316 transitions. [2022-12-13 14:50:55,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-12-13 14:50:55,330 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:50:55,330 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] [2022-12-13 14:50:55,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 14:50:55,330 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:50:55,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:50:55,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1371224164, now seen corresponding path program 1 times [2022-12-13 14:50:55,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:50:55,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912014619] [2022-12-13 14:50:55,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:50:55,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:50:55,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:55,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 14:50:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:55,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:50:55,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:55,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 14:50:55,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:55,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:50:55,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:50:55,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912014619] [2022-12-13 14:50:55,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912014619] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:50:55,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:50:55,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 14:50:55,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783392328] [2022-12-13 14:50:55,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:50:55,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 14:50:55,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:50:55,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 14:50:55,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 14:50:55,406 INFO L87 Difference]: Start difference. First operand 255 states and 316 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-13 14:50:55,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:50:55,552 INFO L93 Difference]: Finished difference Result 277 states and 345 transitions. [2022-12-13 14:50:55,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 14:50:55,552 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2022-12-13 14:50:55,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:50:55,555 INFO L225 Difference]: With dead ends: 277 [2022-12-13 14:50:55,555 INFO L226 Difference]: Without dead ends: 275 [2022-12-13 14:50:55,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-12-13 14:50:55,556 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 114 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:50:55,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 317 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:50:55,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2022-12-13 14:50:55,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 255. [2022-12-13 14:50:55,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 196 states have (on average 1.219387755102041) internal successors, (239), 207 states have internal predecessors, (239), 29 states have call successors, (29), 28 states have call predecessors, (29), 29 states have return successors, (44), 29 states have call predecessors, (44), 29 states have call successors, (44) [2022-12-13 14:50:55,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 312 transitions. [2022-12-13 14:50:55,576 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 312 transitions. Word has length 45 [2022-12-13 14:50:55,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:50:55,577 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 312 transitions. [2022-12-13 14:50:55,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-13 14:50:55,577 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 312 transitions. [2022-12-13 14:50:55,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-12-13 14:50:55,577 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:50:55,578 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] [2022-12-13 14:50:55,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 14:50:55,578 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:50:55,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:50:55,578 INFO L85 PathProgramCache]: Analyzing trace with hash -702494737, now seen corresponding path program 1 times [2022-12-13 14:50:55,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:50:55,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766677438] [2022-12-13 14:50:55,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:50:55,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:50:55,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:55,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 14:50:55,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:55,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 14:50:55,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:55,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 14:50:55,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:55,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:50:55,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:50:55,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766677438] [2022-12-13 14:50:55,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766677438] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:50:55,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:50:55,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 14:50:55,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501112239] [2022-12-13 14:50:55,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:50:55,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 14:50:55,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:50:55,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 14:50:55,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:50:55,653 INFO L87 Difference]: Start difference. First operand 255 states and 312 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-13 14:50:56,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:50:56,017 INFO L93 Difference]: Finished difference Result 825 states and 1040 transitions. [2022-12-13 14:50:56,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 14:50:56,017 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 47 [2022-12-13 14:50:56,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:50:56,021 INFO L225 Difference]: With dead ends: 825 [2022-12-13 14:50:56,021 INFO L226 Difference]: Without dead ends: 577 [2022-12-13 14:50:56,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2022-12-13 14:50:56,023 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 286 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 14:50:56,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 371 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 14:50:56,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-12-13 14:50:56,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 549. [2022-12-13 14:50:56,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 420 states have (on average 1.1904761904761905) internal successors, (500), 447 states have internal predecessors, (500), 64 states have call successors, (64), 56 states have call predecessors, (64), 64 states have return successors, (103), 64 states have call predecessors, (103), 64 states have call successors, (103) [2022-12-13 14:50:56,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 667 transitions. [2022-12-13 14:50:56,064 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 667 transitions. Word has length 47 [2022-12-13 14:50:56,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:50:56,064 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 667 transitions. [2022-12-13 14:50:56,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-13 14:50:56,065 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 667 transitions. [2022-12-13 14:50:56,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-13 14:50:56,065 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:50:56,065 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, 1, 1, 1] [2022-12-13 14:50:56,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 14:50:56,066 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:50:56,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:50:56,066 INFO L85 PathProgramCache]: Analyzing trace with hash -540609749, now seen corresponding path program 1 times [2022-12-13 14:50:56,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:50:56,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155266990] [2022-12-13 14:50:56,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:50:56,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:50:56,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 14:50:56,078 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 14:50:56,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 14:50:56,108 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 14:50:56,108 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 14:50:56,109 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-13 14:50:56,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 14:50:56,113 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:50:56,116 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 14:50:56,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 02:50:56 BoogieIcfgContainer [2022-12-13 14:50:56,143 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 14:50:56,143 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 14:50:56,143 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 14:50:56,144 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 14:50:56,144 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:50:53" (3/4) ... [2022-12-13 14:50:56,145 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-13 14:50:56,181 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c490f8-7418-44a1-a400-dc3242f76dde/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 14:50:56,181 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 14:50:56,181 INFO L158 Benchmark]: Toolchain (without parser) took 3199.61ms. Allocated memory was 140.5MB in the beginning and 197.1MB in the end (delta: 56.6MB). Free memory was 99.0MB in the beginning and 95.7MB in the end (delta: 3.3MB). Peak memory consumption was 62.0MB. Max. memory is 16.1GB. [2022-12-13 14:50:56,181 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 140.5MB. Free memory is still 112.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 14:50:56,182 INFO L158 Benchmark]: CACSL2BoogieTranslator took 341.28ms. Allocated memory is still 140.5MB. Free memory was 98.5MB in the beginning and 80.1MB in the end (delta: 18.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-13 14:50:56,182 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.92ms. Allocated memory is still 140.5MB. Free memory was 80.1MB in the beginning and 77.5MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 14:50:56,182 INFO L158 Benchmark]: Boogie Preprocessor took 24.28ms. Allocated memory is still 140.5MB. Free memory was 77.5MB in the beginning and 76.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 14:50:56,182 INFO L158 Benchmark]: RCFGBuilder took 317.75ms. Allocated memory is still 140.5MB. Free memory was 76.0MB in the beginning and 60.3MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-13 14:50:56,182 INFO L158 Benchmark]: TraceAbstraction took 2426.96ms. Allocated memory was 140.5MB in the beginning and 197.1MB in the end (delta: 56.6MB). Free memory was 59.3MB in the beginning and 101.0MB in the end (delta: -41.7MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. [2022-12-13 14:50:56,182 INFO L158 Benchmark]: Witness Printer took 37.43ms. Allocated memory is still 197.1MB. Free memory was 101.0MB in the beginning and 95.7MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 14:50:56,183 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 140.5MB. Free memory is still 112.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 341.28ms. Allocated memory is still 140.5MB. Free memory was 98.5MB in the beginning and 80.1MB in the end (delta: 18.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.92ms. Allocated memory is still 140.5MB. Free memory was 80.1MB in the beginning and 77.5MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.28ms. Allocated memory is still 140.5MB. Free memory was 77.5MB in the beginning and 76.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 317.75ms. Allocated memory is still 140.5MB. Free memory was 76.0MB in the beginning and 60.3MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2426.96ms. Allocated memory was 140.5MB in the beginning and 197.1MB in the end (delta: 56.6MB). Free memory was 59.3MB in the beginning and 101.0MB in the end (delta: -41.7MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. * Witness Printer took 37.43ms. Allocated memory is still 197.1MB. Free memory was 101.0MB in the beginning and 95.7MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 398]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L86] int waterLevel = 1; [L87] int methaneLevelCritical = 0; [L189] int cleanupTimeShifts = 4; [L405] int pumpRunning = 0; [L406] int systemActive = 1; [L779] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L268] int retValue_acc ; [L269] int tmp ; [L273] FCALL select_helpers() [L274] FCALL select_features() [L275] CALL, EXPR valid_product() [L317] int retValue_acc ; [L320] retValue_acc = 1 [L321] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L275] RET, EXPR valid_product() [L275] tmp = valid_product() [L277] COND TRUE \read(tmp) [L279] FCALL setup() [L280] CALL runTest() [L259] CALL test() [L328] int splverifierCounter ; [L329] int tmp ; [L330] int tmp___0 ; [L331] int tmp___1 ; [L332] int tmp___2 ; [L335] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L337] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L339] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L345] tmp = __VERIFIER_nondet_int() [L347] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=1] [L349] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L104] COND TRUE waterLevel < 2 [L105] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L349] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=2] [L355] tmp___0 = __VERIFIER_nondet_int() [L357] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=1, waterLevel=2] [L359] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L116] COND FALSE !(\read(methaneLevelCritical)) [L119] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L359] RET changeMethaneLevel() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=1, waterLevel=2] [L365] tmp___2 = __VERIFIER_nondet_int() [L367] COND FALSE !(\read(tmp___2)) [L373] tmp___1 = __VERIFIER_nondet_int() [L375] COND TRUE \read(tmp___1) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=1, tmp___1=1, tmp___2=0, waterLevel=2] [L382] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L412] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L419] COND TRUE \read(systemActive) [L421] CALL processEnvironment() [L467] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L470] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L485] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L441] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L444] COND TRUE ! pumpRunning [L446] CALL, EXPR isHighWaterLevel() [L564] int retValue_acc ; [L565] int tmp ; [L566] int tmp___0 ; [L570] CALL, EXPR isHighWaterSensorDry() [L166] int retValue_acc ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L169] COND FALSE !(waterLevel < 2) [L173] retValue_acc = 0 [L174] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L570] RET, EXPR isHighWaterSensorDry() [L570] tmp = isHighWaterSensorDry() [L572] COND FALSE !(\read(tmp)) [L575] tmp___0 = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L577] retValue_acc = tmp___0 [L578] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L446] RET, EXPR isHighWaterLevel() [L446] tmp = isHighWaterLevel() [L448] COND TRUE \read(tmp) [L450] CALL activatePump() [L495] pumpRunning = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L450] RET activatePump() [L485] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L421] RET processEnvironment() [L427] CALL __utac_acc__Specification1_spec__1() [L54] int tmp ; [L55] int tmp___0 ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L59] CALL, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L125] int retValue_acc ; [L128] retValue_acc = methaneLevelCritical [L129] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L59] RET, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L59] tmp = isMethaneLevelCritical() [L61] COND TRUE \read(tmp) [L63] CALL, EXPR isPumpRunning() [L519] int retValue_acc ; [L522] retValue_acc = pumpRunning [L523] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L63] RET, EXPR isPumpRunning() [L63] tmp___0 = isPumpRunning() [L65] COND TRUE \read(tmp___0) [L67] CALL __automaton_fail() [L398] reach_error() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 87 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.3s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1049 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1023 mSDsluCounter, 2192 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1375 mSDsCounter, 249 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 948 IncrementalHoareTripleChecker+Invalid, 1197 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 249 mSolverCounterUnsat, 817 mSDtfsCounter, 948 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 120 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=549occurred in iteration=9, InterpolantAutomatonStates: 70, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 78 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 387 NumberOfCodeBlocks, 387 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 327 ConstructedInterpolants, 0 QuantifiedInterpolants, 664 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 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! [2022-12-13 14:50:56,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2c490f8-7418-44a1-a400-dc3242f76dde/bin/uautomizer-uyxdKDjOR8/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