./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec3_product20.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_d46367c1-8784-4365-9371-4ca48bc854c1/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46367c1-8784-4365-9371-4ca48bc854c1/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46367c1-8784-4365-9371-4ca48bc854c1/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46367c1-8784-4365-9371-4ca48bc854c1/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec3_product20.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46367c1-8784-4365-9371-4ca48bc854c1/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46367c1-8784-4365-9371-4ca48bc854c1/bin/uautomizer-TMbwUNV5ro --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 43c19ce3e2b7787ecf8dd3f4cbbbb7bba1e2bcc266043b083140097432ac956b --- 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-8393723 [2022-11-18 20:04:00,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:04:00,829 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:04:00,851 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:04:00,852 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:04:00,853 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:04:00,854 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:04:00,856 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:04:00,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:04:00,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:04:00,860 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:04:00,862 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:04:00,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:04:00,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:04:00,865 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:04:00,866 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:04:00,867 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:04:00,868 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:04:00,870 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:04:00,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:04:00,875 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:04:00,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:04:00,889 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:04:00,890 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:04:00,894 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:04:00,899 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:04:00,900 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:04:00,901 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:04:00,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:04:00,902 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:04:00,903 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:04:00,903 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:04:00,906 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:04:00,907 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:04:00,910 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:04:00,912 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:04:00,913 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:04:00,913 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:04:00,913 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:04:00,914 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:04:00,915 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:04:00,916 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46367c1-8784-4365-9371-4ca48bc854c1/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:04:00,941 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:04:00,942 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:04:00,942 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:04:00,942 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:04:00,943 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:04:00,943 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:04:00,944 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:04:00,944 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:04:00,944 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:04:00,945 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:04:00,945 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:04:00,945 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:04:00,945 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:04:00,945 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:04:00,946 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:04:00,946 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:04:00,946 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:04:00,946 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:04:00,946 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:04:00,947 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:04:00,947 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:04:00,947 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:04:00,947 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:04:00,948 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:04:00,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:04:00,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:04:00,948 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:04:00,948 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:04:00,949 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:04:00,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:04:00,949 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:04:00,949 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:04:00,949 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:04:00,950 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46367c1-8784-4365-9371-4ca48bc854c1/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46367c1-8784-4365-9371-4ca48bc854c1/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43c19ce3e2b7787ecf8dd3f4cbbbb7bba1e2bcc266043b083140097432ac956b [2022-11-18 20:04:01,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:04:01,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:04:01,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:04:01,228 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:04:01,231 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:04:01,233 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46367c1-8784-4365-9371-4ca48bc854c1/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/product-lines/minepump_spec3_product20.cil.c [2022-11-18 20:04:01,302 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46367c1-8784-4365-9371-4ca48bc854c1/bin/uautomizer-TMbwUNV5ro/data/82e5c8bbd/9ac6e928d2b94aaeb9791d6b31933746/FLAG7ad266748 [2022-11-18 20:04:01,836 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:04:01,837 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46367c1-8784-4365-9371-4ca48bc854c1/sv-benchmarks/c/product-lines/minepump_spec3_product20.cil.c [2022-11-18 20:04:01,862 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46367c1-8784-4365-9371-4ca48bc854c1/bin/uautomizer-TMbwUNV5ro/data/82e5c8bbd/9ac6e928d2b94aaeb9791d6b31933746/FLAG7ad266748 [2022-11-18 20:04:02,108 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46367c1-8784-4365-9371-4ca48bc854c1/bin/uautomizer-TMbwUNV5ro/data/82e5c8bbd/9ac6e928d2b94aaeb9791d6b31933746 [2022-11-18 20:04:02,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:04:02,115 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:04:02,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:04:02,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:04:02,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:04:02,123 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:04:02" (1/1) ... [2022-11-18 20:04:02,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ef6ed86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:02, skipping insertion in model container [2022-11-18 20:04:02,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:04:02" (1/1) ... [2022-11-18 20:04:02,132 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:04:02,178 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:04:02,498 WARN L234 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_d46367c1-8784-4365-9371-4ca48bc854c1/sv-benchmarks/c/product-lines/minepump_spec3_product20.cil.c[17955,17968] [2022-11-18 20:04:02,503 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:04:02,512 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:04:02,572 WARN L234 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_d46367c1-8784-4365-9371-4ca48bc854c1/sv-benchmarks/c/product-lines/minepump_spec3_product20.cil.c[17955,17968] [2022-11-18 20:04:02,573 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:04:02,596 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:04:02,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:02 WrapperNode [2022-11-18 20:04:02,597 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:04:02,598 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:04:02,598 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:04:02,598 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:04:02,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:02" (1/1) ... [2022-11-18 20:04:02,631 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:02" (1/1) ... [2022-11-18 20:04:02,662 INFO L138 Inliner]: procedures = 54, calls = 97, calls flagged for inlining = 21, calls inlined = 18, statements flattened = 175 [2022-11-18 20:04:02,662 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:04:02,663 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:04:02,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:04:02,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:04:02,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:02" (1/1) ... [2022-11-18 20:04:02,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:02" (1/1) ... [2022-11-18 20:04:02,677 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:02" (1/1) ... [2022-11-18 20:04:02,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:02" (1/1) ... [2022-11-18 20:04:02,682 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:02" (1/1) ... [2022-11-18 20:04:02,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:02" (1/1) ... [2022-11-18 20:04:02,706 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:02" (1/1) ... [2022-11-18 20:04:02,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:02" (1/1) ... [2022-11-18 20:04:02,709 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:04:02,710 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:04:02,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:04:02,711 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:04:02,718 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:02" (1/1) ... [2022-11-18 20:04:02,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:04:02,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46367c1-8784-4365-9371-4ca48bc854c1/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:04:02,749 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46367c1-8784-4365-9371-4ca48bc854c1/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:04:02,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46367c1-8784-4365-9371-4ca48bc854c1/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:04:02,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:04:02,793 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-18 20:04:02,793 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-18 20:04:02,793 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2022-11-18 20:04:02,793 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2022-11-18 20:04:02,794 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-18 20:04:02,794 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-18 20:04:02,794 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-18 20:04:02,794 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-18 20:04:02,794 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-18 20:04:02,794 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-18 20:04:02,794 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2022-11-18 20:04:02,795 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2022-11-18 20:04:02,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:04:02,795 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-18 20:04:02,795 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-18 20:04:02,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:04:02,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:04:02,876 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:04:02,878 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:04:03,149 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:04:03,157 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:04:03,157 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 20:04:03,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:04:03 BoogieIcfgContainer [2022-11-18 20:04:03,160 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:04:03,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:04:03,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:04:03,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:04:03,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:04:02" (1/3) ... [2022-11-18 20:04:03,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225a6850 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:04:03, skipping insertion in model container [2022-11-18 20:04:03,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:04:02" (2/3) ... [2022-11-18 20:04:03,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225a6850 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:04:03, skipping insertion in model container [2022-11-18 20:04:03,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:04:03" (3/3) ... [2022-11-18 20:04:03,176 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product20.cil.c [2022-11-18 20:04:03,193 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:04:03,194 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:04:03,293 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:04:03,300 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;@3cfa9f5e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:04:03,300 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 20:04:03,305 INFO L276 IsEmpty]: Start isEmpty. Operand has 83 states, 63 states have (on average 1.380952380952381) internal successors, (87), 70 states have internal predecessors, (87), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-18 20:04:03,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 20:04:03,327 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:04:03,328 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:04:03,329 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:04:03,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:03,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1306475585, now seen corresponding path program 1 times [2022-11-18 20:04:03,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:04:03,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680364018] [2022-11-18 20:04:03,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:03,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:04:03,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:03,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 20:04:03,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:03,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:04:03,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:04:03,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680364018] [2022-11-18 20:04:03,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680364018] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:04:03,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:04:03,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:04:03,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460099454] [2022-11-18 20:04:03,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:04:03,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:04:03,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:04:03,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:04:03,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:04:03,687 INFO L87 Difference]: Start difference. First operand has 83 states, 63 states have (on average 1.380952380952381) internal successors, (87), 70 states have internal predecessors, (87), 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 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:04:03,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:04:03,753 INFO L93 Difference]: Finished difference Result 158 states and 213 transitions. [2022-11-18 20:04:03,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:04:03,755 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2022-11-18 20:04:03,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:04:03,776 INFO L225 Difference]: With dead ends: 158 [2022-11-18 20:04:03,777 INFO L226 Difference]: Without dead ends: 74 [2022-11-18 20:04:03,781 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 [2022-11-18 20:04:03,784 INFO L413 NwaCegarLoop]: 103 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, 103 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 [2022-11-18 20:04:03,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:04:03,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-11-18 20:04:03,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-11-18 20:04:03,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 56 states have (on average 1.3035714285714286) internal successors, (73), 62 states have internal predecessors, (73), 11 states have call successors, (11), 7 states have call predecessors, (11), 6 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-18 20:04:03,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 94 transitions. [2022-11-18 20:04:03,858 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 94 transitions. Word has length 25 [2022-11-18 20:04:03,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:04:03,859 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 94 transitions. [2022-11-18 20:04:03,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:04:03,861 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 94 transitions. [2022-11-18 20:04:03,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-18 20:04:03,865 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:04:03,865 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:04:03,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:04:03,866 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:04:03,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:03,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1441839023, now seen corresponding path program 1 times [2022-11-18 20:04:03,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:04:03,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590934910] [2022-11-18 20:04:03,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:03,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:04:03,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:04,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:04:04,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:04,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:04:04,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:04:04,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590934910] [2022-11-18 20:04:04,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590934910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:04:04,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:04:04,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:04:04,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503972771] [2022-11-18 20:04:04,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:04:04,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:04:04,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:04:04,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:04:04,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:04:04,011 INFO L87 Difference]: Start difference. First operand 74 states and 94 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:04:04,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:04:04,026 INFO L93 Difference]: Finished difference Result 109 states and 137 transitions. [2022-11-18 20:04:04,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:04:04,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2022-11-18 20:04:04,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:04:04,029 INFO L225 Difference]: With dead ends: 109 [2022-11-18 20:04:04,029 INFO L226 Difference]: Without dead ends: 65 [2022-11-18 20:04:04,030 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 [2022-11-18 20:04:04,031 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 17 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 140 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 [2022-11-18 20:04:04,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 140 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:04:04,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-18 20:04:04,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-11-18 20:04:04,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 50 states have (on average 1.32) internal successors, (66), 56 states have internal predecessors, (66), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-18 20:04:04,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 82 transitions. [2022-11-18 20:04:04,041 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 82 transitions. Word has length 26 [2022-11-18 20:04:04,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:04:04,041 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 82 transitions. [2022-11-18 20:04:04,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:04:04,042 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 82 transitions. [2022-11-18 20:04:04,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-18 20:04:04,043 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:04:04,043 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:04:04,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:04:04,044 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:04:04,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:04,044 INFO L85 PathProgramCache]: Analyzing trace with hash -2084051564, now seen corresponding path program 1 times [2022-11-18 20:04:04,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:04:04,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971148219] [2022-11-18 20:04:04,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:04,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:04:04,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:04,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:04:04,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:04,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:04:04,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:04:04,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971148219] [2022-11-18 20:04:04,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971148219] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:04:04,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:04:04,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:04:04,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802882959] [2022-11-18 20:04:04,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:04:04,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:04:04,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:04:04,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:04:04,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:04:04,182 INFO L87 Difference]: Start difference. First operand 65 states and 82 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:04:04,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:04:04,302 INFO L93 Difference]: Finished difference Result 167 states and 215 transitions. [2022-11-18 20:04:04,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:04:04,303 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2022-11-18 20:04:04,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:04:04,305 INFO L225 Difference]: With dead ends: 167 [2022-11-18 20:04:04,306 INFO L226 Difference]: Without dead ends: 109 [2022-11-18 20:04:04,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:04:04,308 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 145 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:04:04,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 294 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:04:04,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2022-11-18 20:04:04,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2022-11-18 20:04:04,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 81 states have (on average 1.345679012345679) internal successors, (109), 90 states have internal predecessors, (109), 13 states have call successors, (13), 11 states have call predecessors, (13), 11 states have return successors, (14), 10 states have call predecessors, (14), 13 states have call successors, (14) [2022-11-18 20:04:04,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 136 transitions. [2022-11-18 20:04:04,339 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 136 transitions. Word has length 31 [2022-11-18 20:04:04,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:04:04,339 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 136 transitions. [2022-11-18 20:04:04,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:04:04,340 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 136 transitions. [2022-11-18 20:04:04,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-18 20:04:04,344 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:04:04,344 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:04:04,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:04:04,344 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:04:04,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:04,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1036222709, now seen corresponding path program 1 times [2022-11-18 20:04:04,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:04:04,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961729150] [2022-11-18 20:04:04,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:04,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:04:04,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:04,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 20:04:04,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:04,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:04:04,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:04:04,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961729150] [2022-11-18 20:04:04,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961729150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:04:04,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:04:04,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:04:04,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427321135] [2022-11-18 20:04:04,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:04:04,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:04:04,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:04:04,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:04:04,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:04:04,506 INFO L87 Difference]: Start difference. First operand 106 states and 136 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:04:04,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:04:04,608 INFO L93 Difference]: Finished difference Result 298 states and 398 transitions. [2022-11-18 20:04:04,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:04:04,612 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2022-11-18 20:04:04,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:04:04,614 INFO L225 Difference]: With dead ends: 298 [2022-11-18 20:04:04,614 INFO L226 Difference]: Without dead ends: 199 [2022-11-18 20:04:04,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:04:04,617 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 52 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:04:04,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 327 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:04:04,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-11-18 20:04:04,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 193. [2022-11-18 20:04:04,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 146 states have (on average 1.3287671232876712) internal successors, (194), 161 states have internal predecessors, (194), 26 states have call successors, (26), 22 states have call predecessors, (26), 20 states have return successors, (31), 18 states have call predecessors, (31), 26 states have call successors, (31) [2022-11-18 20:04:04,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 251 transitions. [2022-11-18 20:04:04,673 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 251 transitions. Word has length 34 [2022-11-18 20:04:04,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:04:04,673 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 251 transitions. [2022-11-18 20:04:04,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:04:04,674 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 251 transitions. [2022-11-18 20:04:04,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 20:04:04,683 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:04:04,683 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] [2022-11-18 20:04:04,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:04:04,683 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:04:04,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:04,684 INFO L85 PathProgramCache]: Analyzing trace with hash 316897146, now seen corresponding path program 1 times [2022-11-18 20:04:04,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:04:04,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456419332] [2022-11-18 20:04:04,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:04,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:04:04,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:04,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:04:04,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:04:04,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:04:04,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:04:04,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456419332] [2022-11-18 20:04:04,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456419332] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:04:04,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:04:04,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:04:04,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795573941] [2022-11-18 20:04:04,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:04:04,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:04:04,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:04:04,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:04:04,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:04:04,841 INFO L87 Difference]: Start difference. First operand 193 states and 251 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:04:04,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:04:04,965 INFO L93 Difference]: Finished difference Result 500 states and 681 transitions. [2022-11-18 20:04:04,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:04:04,972 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (2), 1 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 36 [2022-11-18 20:04:04,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:04:04,980 INFO L225 Difference]: With dead ends: 500 [2022-11-18 20:04:04,980 INFO L226 Difference]: Without dead ends: 314 [2022-11-18 20:04:04,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:04:04,983 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 61 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:04:04,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 435 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:04:04,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-11-18 20:04:05,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 302. [2022-11-18 20:04:05,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 230 states have (on average 1.308695652173913) internal successors, (301), 248 states have internal predecessors, (301), 38 states have call successors, (38), 36 states have call predecessors, (38), 33 states have return successors, (54), 31 states have call predecessors, (54), 38 states have call successors, (54) [2022-11-18 20:04:05,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 393 transitions. [2022-11-18 20:04:05,034 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 393 transitions. Word has length 36 [2022-11-18 20:04:05,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:04:05,035 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 393 transitions. [2022-11-18 20:04:05,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:04:05,035 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 393 transitions. [2022-11-18 20:04:05,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-18 20:04:05,036 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:04:05,036 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:04:05,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:04:05,041 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:04:05,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:04:05,043 INFO L85 PathProgramCache]: Analyzing trace with hash 957099611, now seen corresponding path program 1 times [2022-11-18 20:04:05,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:04:05,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900364436] [2022-11-18 20:04:05,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:04:05,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:04:05,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:04:05,071 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 20:04:05,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 20:04:05,124 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 20:04:05,125 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 20:04:05,126 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-18 20:04:05,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:04:05,131 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-18 20:04:05,135 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 20:04:05,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:04:05 BoogieIcfgContainer [2022-11-18 20:04:05,186 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 20:04:05,186 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 20:04:05,186 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 20:04:05,186 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 20:04:05,187 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:04:03" (3/4) ... [2022-11-18 20:04:05,189 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-18 20:04:05,257 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46367c1-8784-4365-9371-4ca48bc854c1/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 20:04:05,261 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 20:04:05,261 INFO L158 Benchmark]: Toolchain (without parser) took 3146.30ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 69.6MB in the beginning and 71.4MB in the end (delta: -1.8MB). Peak memory consumption was 17.8MB. Max. memory is 16.1GB. [2022-11-18 20:04:05,262 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 100.7MB. Free memory was 55.8MB in the beginning and 55.7MB in the end (delta: 41.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:04:05,262 INFO L158 Benchmark]: CACSL2BoogieTranslator took 479.13ms. Allocated memory is still 100.7MB. Free memory was 69.3MB in the beginning and 71.0MB in the end (delta: -1.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 20:04:05,262 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.18ms. Allocated memory is still 100.7MB. Free memory was 71.0MB in the beginning and 68.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:04:05,263 INFO L158 Benchmark]: Boogie Preprocessor took 46.79ms. Allocated memory is still 100.7MB. Free memory was 68.9MB in the beginning and 67.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:04:05,263 INFO L158 Benchmark]: RCFGBuilder took 449.41ms. Allocated memory is still 100.7MB. Free memory was 67.4MB in the beginning and 51.7MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-18 20:04:05,263 INFO L158 Benchmark]: TraceAbstraction took 2016.29ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 51.3MB in the beginning and 75.6MB in the end (delta: -24.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:04:05,264 INFO L158 Benchmark]: Witness Printer took 74.62ms. Allocated memory is still 121.6MB. Free memory was 75.6MB in the beginning and 71.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-18 20:04:05,265 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 100.7MB. Free memory was 55.8MB in the beginning and 55.7MB in the end (delta: 41.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 479.13ms. Allocated memory is still 100.7MB. Free memory was 69.3MB in the beginning and 71.0MB in the end (delta: -1.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.18ms. Allocated memory is still 100.7MB. Free memory was 71.0MB in the beginning and 68.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.79ms. Allocated memory is still 100.7MB. Free memory was 68.9MB in the beginning and 67.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 449.41ms. Allocated memory is still 100.7MB. Free memory was 67.4MB in the beginning and 51.7MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2016.29ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 51.3MB in the beginning and 75.6MB in the end (delta: -24.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 74.62ms. Allocated memory is still 121.6MB. Free memory was 75.6MB in the beginning and 71.4MB in the end (delta: 4.2MB). 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: 937]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L257] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L845] int methaneLevelCritical = 0; [L600] int pumpRunning = 0; [L844] int waterLevel = 1; [L601] int systemActive = 1; [L454] int cleanupTimeShifts = 4; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L532] int retValue_acc ; [L533] int tmp ; [L537] FCALL select_helpers() [L538] FCALL select_features() [L539] CALL, EXPR valid_product() [L79] int retValue_acc ; [L82] retValue_acc = 1 [L83] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L539] RET, EXPR valid_product() [L539] tmp = valid_product() [L541] COND TRUE \read(tmp) [L543] FCALL setup() [L544] CALL runTest() [L526] CALL test() [L776] int splverifierCounter ; [L777] int tmp ; [L778] int tmp___0 ; [L779] int tmp___1 ; [L780] int tmp___2 ; [L783] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L785] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L787] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L793] tmp = __VERIFIER_nondet_int() [L795] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L797] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L862] COND TRUE waterLevel < 2 [L863] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L797] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L803] tmp___0 = __VERIFIER_nondet_int() [L805] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=0, waterLevel=2] [L813] tmp___2 = __VERIFIER_nondet_int() [L815] COND FALSE !(\read(tmp___2)) [L821] tmp___1 = __VERIFIER_nondet_int() [L823] COND TRUE \read(tmp___1) [L825] CALL stopSystem() [L755] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L762] systemActive = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L825] RET stopSystem() [L832] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L607] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L614] COND FALSE !(\read(systemActive)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L622] CALL __utac_acc__Specification3_spec__1() [L560] int tmp ; [L561] int tmp___0 ; [L562] int tmp___1 ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L566] CALL, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L883] int retValue_acc ; [L886] retValue_acc = methaneLevelCritical [L887] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=0, waterLevel=2] [L566] RET, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] [L566] tmp = isMethaneLevelCritical() [L568] COND FALSE !(\read(tmp)) [L572] CALL, EXPR getWaterLevel() [L915] int retValue_acc ; [L918] retValue_acc = waterLevel [L919] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=2, systemActive=0, waterLevel=2] [L572] RET, EXPR getWaterLevel() [L572] tmp___0 = getWaterLevel() [L574] COND TRUE tmp___0 == 2 [L576] CALL, EXPR isPumpRunning() [L688] int retValue_acc ; [L691] retValue_acc = pumpRunning [L692] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=0, waterLevel=2] [L576] RET, EXPR isPumpRunning() [L576] tmp___1 = isPumpRunning() [L578] COND FALSE !(\read(tmp___1)) [L582] CALL __automaton_fail() [L937] reach_error() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=0, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 83 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 279 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 275 mSDsluCounter, 1299 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 806 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 63 IncrementalHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 493 mSDtfsCounter, 63 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=302occurred in iteration=5, InterpolantAutomatonStates: 22, 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, 5 MinimizatonAttempts, 21 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 190 NumberOfCodeBlocks, 190 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 147 ConstructedInterpolants, 0 QuantifiedInterpolants, 254 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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! [2022-11-18 20:04:05,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d46367c1-8784-4365-9371-4ca48bc854c1/bin/uautomizer-TMbwUNV5ro/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