./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product45.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_d4fc2541-9164-47d0-be7f-ba26c0b30e9d/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4fc2541-9164-47d0-be7f-ba26c0b30e9d/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_d4fc2541-9164-47d0-be7f-ba26c0b30e9d/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4fc2541-9164-47d0-be7f-ba26c0b30e9d/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4fc2541-9164-47d0-be7f-ba26c0b30e9d/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_d4fc2541-9164-47d0-be7f-ba26c0b30e9d/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 ba9a436826b937f0c5d07c40f29a0f312221efc7ce174fd7c7535766b753ea6d --- 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 21:01:34,700 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 21:01:34,703 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 21:01:34,740 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 21:01:34,741 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 21:01:34,745 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 21:01:34,749 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 21:01:34,754 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 21:01:34,757 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 21:01:34,764 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 21:01:34,766 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 21:01:34,769 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 21:01:34,770 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 21:01:34,773 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 21:01:34,776 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 21:01:34,778 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 21:01:34,780 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 21:01:34,782 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 21:01:34,784 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 21:01:34,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 21:01:34,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 21:01:34,799 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 21:01:34,802 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 21:01:34,804 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 21:01:34,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 21:01:34,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 21:01:34,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 21:01:34,817 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 21:01:34,818 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 21:01:34,819 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 21:01:34,821 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 21:01:34,822 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 21:01:34,826 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 21:01:34,828 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 21:01:34,829 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 21:01:34,830 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 21:01:34,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 21:01:34,831 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 21:01:34,831 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 21:01:34,832 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 21:01:34,833 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 21:01:34,834 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4fc2541-9164-47d0-be7f-ba26c0b30e9d/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 21:01:34,895 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 21:01:34,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 21:01:34,897 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 21:01:34,897 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 21:01:34,898 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 21:01:34,898 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 21:01:34,899 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 21:01:34,900 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 21:01:34,900 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 21:01:34,900 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 21:01:34,902 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 21:01:34,902 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 21:01:34,902 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 21:01:34,902 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 21:01:34,903 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 21:01:34,903 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 21:01:34,903 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 21:01:34,903 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 21:01:34,904 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 21:01:34,904 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 21:01:34,904 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 21:01:34,904 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 21:01:34,905 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 21:01:34,905 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 21:01:34,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:01:34,905 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 21:01:34,906 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 21:01:34,906 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 21:01:34,906 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 21:01:34,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 21:01:34,907 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 21:01:34,907 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 21:01:34,907 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 21:01:34,908 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_d4fc2541-9164-47d0-be7f-ba26c0b30e9d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4fc2541-9164-47d0-be7f-ba26c0b30e9d/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ba9a436826b937f0c5d07c40f29a0f312221efc7ce174fd7c7535766b753ea6d [2022-11-18 21:01:35,344 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 21:01:35,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 21:01:35,380 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 21:01:35,382 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 21:01:35,383 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 21:01:35,384 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4fc2541-9164-47d0-be7f-ba26c0b30e9d/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c [2022-11-18 21:01:35,471 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4fc2541-9164-47d0-be7f-ba26c0b30e9d/bin/uautomizer-TMbwUNV5ro/data/265a03487/f73aba744218452680a7ccb5c8e48a16/FLAG0c68a5769 [2022-11-18 21:01:36,123 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 21:01:36,124 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4fc2541-9164-47d0-be7f-ba26c0b30e9d/sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c [2022-11-18 21:01:36,135 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4fc2541-9164-47d0-be7f-ba26c0b30e9d/bin/uautomizer-TMbwUNV5ro/data/265a03487/f73aba744218452680a7ccb5c8e48a16/FLAG0c68a5769 [2022-11-18 21:01:36,402 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4fc2541-9164-47d0-be7f-ba26c0b30e9d/bin/uautomizer-TMbwUNV5ro/data/265a03487/f73aba744218452680a7ccb5c8e48a16 [2022-11-18 21:01:36,406 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 21:01:36,409 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 21:01:36,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 21:01:36,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 21:01:36,418 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 21:01:36,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:01:36" (1/1) ... [2022-11-18 21:01:36,421 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39b81633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:01:36, skipping insertion in model container [2022-11-18 21:01:36,421 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:01:36" (1/1) ... [2022-11-18 21:01:36,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 21:01:36,522 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 21:01:36,805 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_d4fc2541-9164-47d0-be7f-ba26c0b30e9d/sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c[5266,5279] [2022-11-18 21:01:36,886 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:01:36,900 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 21:01:36,962 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_d4fc2541-9164-47d0-be7f-ba26c0b30e9d/sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c[5266,5279] [2022-11-18 21:01:37,030 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 21:01:37,051 INFO L208 MainTranslator]: Completed translation [2022-11-18 21:01:37,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:01:37 WrapperNode [2022-11-18 21:01:37,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 21:01:37,053 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 21:01:37,053 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 21:01:37,054 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 21:01:37,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:01:37" (1/1) ... [2022-11-18 21:01:37,086 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:01:37" (1/1) ... [2022-11-18 21:01:37,124 INFO L138 Inliner]: procedures = 54, calls = 99, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 203 [2022-11-18 21:01:37,131 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 21:01:37,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 21:01:37,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 21:01:37,133 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 21:01:37,145 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:01:37" (1/1) ... [2022-11-18 21:01:37,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:01:37" (1/1) ... [2022-11-18 21:01:37,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:01:37" (1/1) ... [2022-11-18 21:01:37,148 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:01:37" (1/1) ... [2022-11-18 21:01:37,154 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:01:37" (1/1) ... [2022-11-18 21:01:37,176 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:01:37" (1/1) ... [2022-11-18 21:01:37,178 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:01:37" (1/1) ... [2022-11-18 21:01:37,180 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:01:37" (1/1) ... [2022-11-18 21:01:37,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 21:01:37,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 21:01:37,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 21:01:37,184 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 21:01:37,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:01:37" (1/1) ... [2022-11-18 21:01:37,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 21:01:37,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4fc2541-9164-47d0-be7f-ba26c0b30e9d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:01:37,240 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4fc2541-9164-47d0-be7f-ba26c0b30e9d/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 21:01:37,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4fc2541-9164-47d0-be7f-ba26c0b30e9d/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 21:01:37,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 21:01:37,299 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-18 21:01:37,299 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-18 21:01:37,299 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-18 21:01:37,300 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-18 21:01:37,300 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-18 21:01:37,300 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-18 21:01:37,300 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-18 21:01:37,301 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-18 21:01:37,302 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2022-11-18 21:01:37,303 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2022-11-18 21:01:37,303 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2022-11-18 21:01:37,303 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2022-11-18 21:01:37,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 21:01:37,304 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-18 21:01:37,304 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-18 21:01:37,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 21:01:37,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 21:01:37,406 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 21:01:37,408 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 21:01:37,877 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 21:01:37,885 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 21:01:37,886 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 21:01:37,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:01:37 BoogieIcfgContainer [2022-11-18 21:01:37,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 21:01:37,891 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 21:01:37,891 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 21:01:37,911 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 21:01:37,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:01:36" (1/3) ... [2022-11-18 21:01:37,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c314d04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:01:37, skipping insertion in model container [2022-11-18 21:01:37,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:01:37" (2/3) ... [2022-11-18 21:01:37,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c314d04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:01:37, skipping insertion in model container [2022-11-18 21:01:37,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:01:37" (3/3) ... [2022-11-18 21:01:37,914 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product45.cil.c [2022-11-18 21:01:37,969 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 21:01:37,969 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 21:01:38,066 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 21:01:38,078 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;@4143ba3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 21:01:38,078 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 21:01:38,087 INFO L276 IsEmpty]: Start isEmpty. Operand has 88 states, 67 states have (on average 1.3880597014925373) internal successors, (93), 75 states have internal predecessors, (93), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-18 21:01:38,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 21:01:38,103 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:01:38,104 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:38,106 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:01:38,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:38,116 INFO L85 PathProgramCache]: Analyzing trace with hash 657665153, now seen corresponding path program 1 times [2022-11-18 21:01:38,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:38,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556624945] [2022-11-18 21:01:38,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:38,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:38,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:38,339 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 21:01:38,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:38,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556624945] [2022-11-18 21:01:38,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556624945] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:38,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:38,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 21:01:38,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443340671] [2022-11-18 21:01:38,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:38,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 21:01:38,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:38,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 21:01:38,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 21:01:38,410 INFO L87 Difference]: Start difference. First operand has 88 states, 67 states have (on average 1.3880597014925373) internal successors, (93), 75 states have internal predecessors, (93), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:38,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:01:38,490 INFO L93 Difference]: Finished difference Result 168 states and 229 transitions. [2022-11-18 21:01:38,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 21:01:38,493 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-18 21:01:38,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:01:38,506 INFO L225 Difference]: With dead ends: 168 [2022-11-18 21:01:38,506 INFO L226 Difference]: Without dead ends: 79 [2022-11-18 21:01:38,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 21:01:38,522 INFO L413 NwaCegarLoop]: 111 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, 111 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 21:01:38,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 21:01:38,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-18 21:01:38,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2022-11-18 21:01:38,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 60 states have (on average 1.3166666666666667) internal successors, (79), 67 states have internal predecessors, (79), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-18 21:01:38,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 102 transitions. [2022-11-18 21:01:38,601 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 102 transitions. Word has length 19 [2022-11-18 21:01:38,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:01:38,602 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 102 transitions. [2022-11-18 21:01:38,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:38,603 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 102 transitions. [2022-11-18 21:01:38,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-18 21:01:38,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:01:38,606 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:38,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 21:01:38,607 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:01:38,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:38,609 INFO L85 PathProgramCache]: Analyzing trace with hash -635016862, now seen corresponding path program 1 times [2022-11-18 21:01:38,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:38,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788396676] [2022-11-18 21:01:38,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:38,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:38,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:38,821 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 21:01:38,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:38,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788396676] [2022-11-18 21:01:38,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788396676] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:38,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:38,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 21:01:38,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167752500] [2022-11-18 21:01:38,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:38,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:01:38,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:38,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:01:38,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:01:38,832 INFO L87 Difference]: Start difference. First operand 79 states and 102 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:38,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:01:38,871 INFO L93 Difference]: Finished difference Result 124 states and 160 transitions. [2022-11-18 21:01:38,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:01:38,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-18 21:01:38,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:01:38,874 INFO L225 Difference]: With dead ends: 124 [2022-11-18 21:01:38,875 INFO L226 Difference]: Without dead ends: 70 [2022-11-18 21:01:38,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:01:38,880 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 12 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 162 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 21:01:38,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 162 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 21:01:38,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-18 21:01:38,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-11-18 21:01:38,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 54 states have (on average 1.3333333333333333) internal successors, (72), 61 states have internal predecessors, (72), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-18 21:01:38,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 90 transitions. [2022-11-18 21:01:38,907 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 90 transitions. Word has length 20 [2022-11-18 21:01:38,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:01:38,907 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 90 transitions. [2022-11-18 21:01:38,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:38,908 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 90 transitions. [2022-11-18 21:01:38,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 21:01:38,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:01:38,909 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] [2022-11-18 21:01:38,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 21:01:38,910 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:01:38,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:38,911 INFO L85 PathProgramCache]: Analyzing trace with hash 393763767, now seen corresponding path program 1 times [2022-11-18 21:01:38,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:38,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596121247] [2022-11-18 21:01:38,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:38,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:38,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:39,055 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 21:01:39,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:39,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596121247] [2022-11-18 21:01:39,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596121247] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:39,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:39,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 21:01:39,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881068052] [2022-11-18 21:01:39,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:39,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 21:01:39,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:39,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 21:01:39,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 21:01:39,060 INFO L87 Difference]: Start difference. First operand 70 states and 90 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:39,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:01:39,083 INFO L93 Difference]: Finished difference Result 133 states and 174 transitions. [2022-11-18 21:01:39,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 21:01:39,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-18 21:01:39,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:01:39,086 INFO L225 Difference]: With dead ends: 133 [2022-11-18 21:01:39,086 INFO L226 Difference]: Without dead ends: 70 [2022-11-18 21:01:39,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 21:01:39,089 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 72 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 88 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 21:01:39,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 88 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 21:01:39,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-18 21:01:39,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-11-18 21:01:39,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 54 states have (on average 1.3148148148148149) internal successors, (71), 61 states have internal predecessors, (71), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-18 21:01:39,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 89 transitions. [2022-11-18 21:01:39,104 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 89 transitions. Word has length 24 [2022-11-18 21:01:39,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:01:39,105 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 89 transitions. [2022-11-18 21:01:39,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 21:01:39,105 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 89 transitions. [2022-11-18 21:01:39,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-18 21:01:39,107 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:01:39,107 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 21:01:39,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 21:01:39,108 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:01:39,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:39,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1897865398, now seen corresponding path program 1 times [2022-11-18 21:01:39,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:39,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149933684] [2022-11-18 21:01:39,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:39,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:39,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 21:01:39,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:39,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 21:01:39,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:39,302 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 21:01:39,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:39,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149933684] [2022-11-18 21:01:39,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149933684] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:39,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:39,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:01:39,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575572650] [2022-11-18 21:01:39,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:39,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 21:01:39,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:39,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 21:01:39,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:01:39,307 INFO L87 Difference]: Start difference. First operand 70 states and 89 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 21:01:39,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:01:39,630 INFO L93 Difference]: Finished difference Result 200 states and 253 transitions. [2022-11-18 21:01:39,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:01:39,631 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2022-11-18 21:01:39,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:01:39,634 INFO L225 Difference]: With dead ends: 200 [2022-11-18 21:01:39,634 INFO L226 Difference]: Without dead ends: 137 [2022-11-18 21:01:39,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:01:39,637 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 176 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:01:39,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 233 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 21:01:39,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-11-18 21:01:39,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 131. [2022-11-18 21:01:39,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 103 states have (on average 1.2621359223300972) internal successors, (130), 111 states have internal predecessors, (130), 12 states have call successors, (12), 12 states have call predecessors, (12), 15 states have return successors, (17), 13 states have call predecessors, (17), 12 states have call successors, (17) [2022-11-18 21:01:39,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 159 transitions. [2022-11-18 21:01:39,668 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 159 transitions. Word has length 34 [2022-11-18 21:01:39,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:01:39,669 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 159 transitions. [2022-11-18 21:01:39,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 21:01:39,670 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 159 transitions. [2022-11-18 21:01:39,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-18 21:01:39,671 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:01:39,672 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] [2022-11-18 21:01:39,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 21:01:39,672 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:01:39,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:39,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1288107246, now seen corresponding path program 1 times [2022-11-18 21:01:39,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:39,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902869827] [2022-11-18 21:01:39,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:39,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:39,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:39,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 21:01:39,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:39,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 21:01:39,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:39,939 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 21:01:39,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:39,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902869827] [2022-11-18 21:01:39,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902869827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:39,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:39,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 21:01:39,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756976795] [2022-11-18 21:01:39,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:39,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:01:39,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:39,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:01:39,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:01:39,945 INFO L87 Difference]: Start difference. First operand 131 states and 159 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 21:01:40,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:01:40,311 INFO L93 Difference]: Finished difference Result 334 states and 425 transitions. [2022-11-18 21:01:40,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 21:01:40,312 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 40 [2022-11-18 21:01:40,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:01:40,322 INFO L225 Difference]: With dead ends: 334 [2022-11-18 21:01:40,328 INFO L226 Difference]: Without dead ends: 210 [2022-11-18 21:01:40,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-18 21:01:40,337 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 137 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 21:01:40,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 269 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 21:01:40,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-11-18 21:01:40,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 208. [2022-11-18 21:01:40,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 163 states have (on average 1.2515337423312884) internal successors, (204), 174 states have internal predecessors, (204), 21 states have call successors, (21), 21 states have call predecessors, (21), 23 states have return successors, (31), 21 states have call predecessors, (31), 21 states have call successors, (31) [2022-11-18 21:01:40,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 256 transitions. [2022-11-18 21:01:40,400 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 256 transitions. Word has length 40 [2022-11-18 21:01:40,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:01:40,401 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 256 transitions. [2022-11-18 21:01:40,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 21:01:40,404 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 256 transitions. [2022-11-18 21:01:40,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-18 21:01:40,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:01:40,414 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:40,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 21:01:40,415 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:01:40,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:40,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1416737492, now seen corresponding path program 1 times [2022-11-18 21:01:40,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:40,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946191856] [2022-11-18 21:01:40,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:40,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:40,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:40,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 21:01:40,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:40,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 21:01:40,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:40,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 21:01:40,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:40,707 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 21:01:40,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:40,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946191856] [2022-11-18 21:01:40,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946191856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:40,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:40,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:01:40,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271836998] [2022-11-18 21:01:40,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:40,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:01:40,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:40,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:01:40,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:01:40,714 INFO L87 Difference]: Start difference. First operand 208 states and 256 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 21:01:41,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:01:41,281 INFO L93 Difference]: Finished difference Result 262 states and 318 transitions. [2022-11-18 21:01:41,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 21:01:41,282 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 44 [2022-11-18 21:01:41,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:01:41,290 INFO L225 Difference]: With dead ends: 262 [2022-11-18 21:01:41,290 INFO L226 Difference]: Without dead ends: 260 [2022-11-18 21:01:41,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2022-11-18 21:01:41,301 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 213 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 21:01:41,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 345 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 21:01:41,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-11-18 21:01:41,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 238. [2022-11-18 21:01:41,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 187 states have (on average 1.2299465240641712) internal successors, (230), 202 states have internal predecessors, (230), 23 states have call successors, (23), 21 states have call predecessors, (23), 27 states have return successors, (37), 23 states have call predecessors, (37), 23 states have call successors, (37) [2022-11-18 21:01:41,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 290 transitions. [2022-11-18 21:01:41,368 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 290 transitions. Word has length 44 [2022-11-18 21:01:41,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:01:41,369 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 290 transitions. [2022-11-18 21:01:41,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 21:01:41,370 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 290 transitions. [2022-11-18 21:01:41,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-18 21:01:41,375 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:01:41,375 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] [2022-11-18 21:01:41,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 21:01:41,375 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:01:41,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:41,376 INFO L85 PathProgramCache]: Analyzing trace with hash -401607229, now seen corresponding path program 1 times [2022-11-18 21:01:41,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:41,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857329392] [2022-11-18 21:01:41,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:41,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:41,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:41,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 21:01:41,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:41,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 21:01:41,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:41,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 21:01:41,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:41,592 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 21:01:41,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:41,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857329392] [2022-11-18 21:01:41,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857329392] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:41,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:41,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:01:41,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566913122] [2022-11-18 21:01:41,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:41,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:01:41,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:41,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:01:41,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:01:41,597 INFO L87 Difference]: Start difference. First operand 238 states and 290 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 21:01:41,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:01:41,965 INFO L93 Difference]: Finished difference Result 489 states and 607 transitions. [2022-11-18 21:01:41,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 21:01:41,966 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 50 [2022-11-18 21:01:41,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:01:41,971 INFO L225 Difference]: With dead ends: 489 [2022-11-18 21:01:41,971 INFO L226 Difference]: Without dead ends: 258 [2022-11-18 21:01:41,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-18 21:01:41,979 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 137 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:01:41,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 287 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 21:01:41,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-11-18 21:01:42,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 244. [2022-11-18 21:01:42,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 193 states have (on average 1.2227979274611398) internal successors, (236), 208 states have internal predecessors, (236), 23 states have call successors, (23), 21 states have call predecessors, (23), 27 states have return successors, (37), 23 states have call predecessors, (37), 23 states have call successors, (37) [2022-11-18 21:01:42,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 296 transitions. [2022-11-18 21:01:42,014 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 296 transitions. Word has length 50 [2022-11-18 21:01:42,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:01:42,015 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 296 transitions. [2022-11-18 21:01:42,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 21:01:42,015 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 296 transitions. [2022-11-18 21:01:42,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-18 21:01:42,016 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:01:42,016 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] [2022-11-18 21:01:42,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 21:01:42,017 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:01:42,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:42,017 INFO L85 PathProgramCache]: Analyzing trace with hash -182752511, now seen corresponding path program 1 times [2022-11-18 21:01:42,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:42,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129650415] [2022-11-18 21:01:42,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:42,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:42,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:42,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 21:01:42,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:42,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 21:01:42,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:42,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 21:01:42,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:42,154 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 21:01:42,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:42,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129650415] [2022-11-18 21:01:42,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129650415] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:42,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:42,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:01:42,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662850394] [2022-11-18 21:01:42,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:42,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:01:42,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:42,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:01:42,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:01:42,156 INFO L87 Difference]: Start difference. First operand 244 states and 296 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 21:01:42,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:01:42,517 INFO L93 Difference]: Finished difference Result 456 states and 558 transitions. [2022-11-18 21:01:42,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 21:01:42,518 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (4), 4 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 50 [2022-11-18 21:01:42,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:01:42,519 INFO L225 Difference]: With dead ends: 456 [2022-11-18 21:01:42,519 INFO L226 Difference]: Without dead ends: 219 [2022-11-18 21:01:42,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-11-18 21:01:42,521 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 248 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:01:42,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 208 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 21:01:42,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-11-18 21:01:42,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 178. [2022-11-18 21:01:42,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 140 states have (on average 1.2142857142857142) internal successors, (170), 150 states have internal predecessors, (170), 17 states have call successors, (17), 17 states have call predecessors, (17), 20 states have return successors, (23), 17 states have call predecessors, (23), 17 states have call successors, (23) [2022-11-18 21:01:42,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 210 transitions. [2022-11-18 21:01:42,548 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 210 transitions. Word has length 50 [2022-11-18 21:01:42,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:01:42,549 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 210 transitions. [2022-11-18 21:01:42,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 21:01:42,549 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 210 transitions. [2022-11-18 21:01:42,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-18 21:01:42,550 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:01:42,551 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] [2022-11-18 21:01:42,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 21:01:42,551 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:01:42,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:42,552 INFO L85 PathProgramCache]: Analyzing trace with hash -316766017, now seen corresponding path program 1 times [2022-11-18 21:01:42,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:42,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086839882] [2022-11-18 21:01:42,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:42,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:42,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:42,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 21:01:42,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:42,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 21:01:42,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:42,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 21:01:42,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:42,691 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 21:01:42,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:42,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086839882] [2022-11-18 21:01:42,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086839882] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:42,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:42,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:01:42,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115920169] [2022-11-18 21:01:42,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:42,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:01:42,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:42,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:01:42,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:01:42,709 INFO L87 Difference]: Start difference. First operand 178 states and 210 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 21:01:43,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:01:43,188 INFO L93 Difference]: Finished difference Result 393 states and 495 transitions. [2022-11-18 21:01:43,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 21:01:43,189 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 50 [2022-11-18 21:01:43,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:01:43,192 INFO L225 Difference]: With dead ends: 393 [2022-11-18 21:01:43,192 INFO L226 Difference]: Without dead ends: 262 [2022-11-18 21:01:43,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-11-18 21:01:43,194 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 189 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 21:01:43,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 368 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 21:01:43,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-11-18 21:01:43,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 260. [2022-11-18 21:01:43,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 204 states have (on average 1.2107843137254901) internal successors, (247), 218 states have internal predecessors, (247), 27 states have call successors, (27), 25 states have call predecessors, (27), 28 states have return successors, (44), 27 states have call predecessors, (44), 27 states have call successors, (44) [2022-11-18 21:01:43,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 318 transitions. [2022-11-18 21:01:43,248 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 318 transitions. Word has length 50 [2022-11-18 21:01:43,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:01:43,248 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 318 transitions. [2022-11-18 21:01:43,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 21:01:43,249 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 318 transitions. [2022-11-18 21:01:43,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-18 21:01:43,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:01:43,251 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:01:43,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 21:01:43,252 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:01:43,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:43,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1655738174, now seen corresponding path program 1 times [2022-11-18 21:01:43,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:43,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680221884] [2022-11-18 21:01:43,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:43,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:43,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:43,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 21:01:43,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:43,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 21:01:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:43,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:01:43,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:43,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 21:01:43,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:43,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-18 21:01:43,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:43,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-18 21:01:43,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:43,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 21:01:43,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:43,509 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 21:01:43,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:43,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680221884] [2022-11-18 21:01:43,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680221884] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:01:43,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648186069] [2022-11-18 21:01:43,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:43,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:01:43,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4fc2541-9164-47d0-be7f-ba26c0b30e9d/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:01:43,516 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4fc2541-9164-47d0-be7f-ba26c0b30e9d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:01:43,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4fc2541-9164-47d0-be7f-ba26c0b30e9d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 21:01:43,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:43,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 21:01:43,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:01:43,945 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:01:43,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 21:01:44,120 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 21:01:44,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648186069] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 21:01:44,121 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 21:01:44,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 9 [2022-11-18 21:01:44,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332188063] [2022-11-18 21:01:44,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 21:01:44,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 21:01:44,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:44,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 21:01:44,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-18 21:01:44,125 INFO L87 Difference]: Start difference. First operand 260 states and 318 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-18 21:01:44,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:01:44,939 INFO L93 Difference]: Finished difference Result 599 states and 768 transitions. [2022-11-18 21:01:44,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 21:01:44,940 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 86 [2022-11-18 21:01:44,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:01:44,944 INFO L225 Difference]: With dead ends: 599 [2022-11-18 21:01:44,944 INFO L226 Difference]: Without dead ends: 386 [2022-11-18 21:01:44,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 182 SyntacticMatches, 8 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=389, Unknown=0, NotChecked=0, Total=552 [2022-11-18 21:01:44,947 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 382 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 21:01:44,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 432 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 21:01:44,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-11-18 21:01:44,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 355. [2022-11-18 21:01:44,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 276 states have (on average 1.210144927536232) internal successors, (334), 295 states have internal predecessors, (334), 38 states have call successors, (38), 36 states have call predecessors, (38), 40 states have return successors, (65), 36 states have call predecessors, (65), 38 states have call successors, (65) [2022-11-18 21:01:44,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 437 transitions. [2022-11-18 21:01:44,999 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 437 transitions. Word has length 86 [2022-11-18 21:01:45,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:01:45,000 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 437 transitions. [2022-11-18 21:01:45,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-18 21:01:45,001 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 437 transitions. [2022-11-18 21:01:45,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-18 21:01:45,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:01:45,003 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:45,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4fc2541-9164-47d0-be7f-ba26c0b30e9d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 21:01:45,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4fc2541-9164-47d0-be7f-ba26c0b30e9d/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 21:01:45,211 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:01:45,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:45,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1210307397, now seen corresponding path program 2 times [2022-11-18 21:01:45,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:45,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712709788] [2022-11-18 21:01:45,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:45,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:45,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 21:01:45,245 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 21:01:45,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 21:01:45,332 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 21:01:45,332 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 21:01:45,333 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-18 21:01:45,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 21:01:45,339 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:45,344 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 21:01:45,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 09:01:45 BoogieIcfgContainer [2022-11-18 21:01:45,464 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 21:01:45,464 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 21:01:45,464 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 21:01:45,465 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 21:01:45,465 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:01:37" (3/4) ... [2022-11-18 21:01:45,468 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-18 21:01:45,584 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4fc2541-9164-47d0-be7f-ba26c0b30e9d/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 21:01:45,584 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 21:01:45,585 INFO L158 Benchmark]: Toolchain (without parser) took 9175.52ms. Allocated memory was 81.8MB in the beginning and 172.0MB in the end (delta: 90.2MB). Free memory was 45.1MB in the beginning and 67.2MB in the end (delta: -22.0MB). Peak memory consumption was 68.1MB. Max. memory is 16.1GB. [2022-11-18 21:01:45,585 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 81.8MB. Free memory is still 62.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 21:01:45,585 INFO L158 Benchmark]: CACSL2BoogieTranslator took 639.28ms. Allocated memory was 81.8MB in the beginning and 111.1MB in the end (delta: 29.4MB). Free memory was 44.9MB in the beginning and 79.5MB in the end (delta: -34.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-18 21:01:45,586 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.84ms. Allocated memory is still 111.1MB. Free memory was 79.5MB in the beginning and 76.7MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-18 21:01:45,586 INFO L158 Benchmark]: Boogie Preprocessor took 50.88ms. Allocated memory is still 111.1MB. Free memory was 76.7MB in the beginning and 75.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 21:01:45,587 INFO L158 Benchmark]: RCFGBuilder took 705.15ms. Allocated memory is still 111.1MB. Free memory was 75.3MB in the beginning and 59.2MB in the end (delta: 16.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-18 21:01:45,587 INFO L158 Benchmark]: TraceAbstraction took 7572.71ms. Allocated memory was 111.1MB in the beginning and 172.0MB in the end (delta: 60.8MB). Free memory was 58.5MB in the beginning and 75.5MB in the end (delta: -17.0MB). Peak memory consumption was 46.9MB. Max. memory is 16.1GB. [2022-11-18 21:01:45,588 INFO L158 Benchmark]: Witness Printer took 119.77ms. Allocated memory is still 172.0MB. Free memory was 75.5MB in the beginning and 67.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-18 21:01:45,589 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 81.8MB. Free memory is still 62.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 639.28ms. Allocated memory was 81.8MB in the beginning and 111.1MB in the end (delta: 29.4MB). Free memory was 44.9MB in the beginning and 79.5MB in the end (delta: -34.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.84ms. Allocated memory is still 111.1MB. Free memory was 79.5MB in the beginning and 76.7MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.88ms. Allocated memory is still 111.1MB. Free memory was 76.7MB in the beginning and 75.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 705.15ms. Allocated memory is still 111.1MB. Free memory was 75.3MB in the beginning and 59.2MB in the end (delta: 16.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 7572.71ms. Allocated memory was 111.1MB in the beginning and 172.0MB in the end (delta: 60.8MB). Free memory was 58.5MB in the beginning and 75.5MB in the end (delta: -17.0MB). Peak memory consumption was 46.9MB. Max. memory is 16.1GB. * Witness Printer took 119.77ms. Allocated memory is still 172.0MB. Free memory was 75.5MB in the beginning and 67.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 327]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L501] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L825] int methaneLevelCritical = 0; [L127] int pumpRunning = 0; [L824] int waterLevel = 1; [L128] int systemActive = 1; [L725] int cleanupTimeShifts = 4; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L801] int retValue_acc ; [L802] int tmp ; [L806] FCALL select_helpers() [L807] FCALL select_features() [L808] CALL, EXPR valid_product() [L944] int retValue_acc ; [L947] retValue_acc = 1 [L948] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L808] RET, EXPR valid_product() [L808] tmp = valid_product() [L810] COND TRUE \read(tmp) [L812] FCALL setup() [L813] CALL runTest() [L792] CALL test() [L55] int splverifierCounter ; [L56] int tmp ; [L57] int tmp___0 ; [L58] int tmp___1 ; [L59] int tmp___2 ; [L62] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L64] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L66] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L72] tmp = __VERIFIER_nondet_int() [L74] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=1] [L76] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L842] COND TRUE waterLevel < 2 [L843] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L76] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=2] [L82] tmp___0 = __VERIFIER_nondet_int() [L84] 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] [L92] tmp___2 = __VERIFIER_nondet_int() [L94] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___2=1, waterLevel=2] [L107] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L135] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L142] COND TRUE \read(systemActive) [L144] CALL processEnvironment() [L190] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L193] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L208] CALL processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L164] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L167] COND TRUE ! pumpRunning [L169] CALL, EXPR isHighWaterLevel() [L304] int retValue_acc ; [L305] int tmp ; [L306] int tmp___0 ; [L310] CALL, EXPR isHighWaterSensorDry() [L904] int retValue_acc ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L907] COND FALSE !(waterLevel < 2) [L911] retValue_acc = 0 [L912] 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=1, waterLevel=2] [L310] RET, EXPR isHighWaterSensorDry() [L310] tmp = isHighWaterSensorDry() [L312] COND FALSE !(\read(tmp)) [L315] tmp___0 = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L317] retValue_acc = tmp___0 [L318] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L169] RET, EXPR isHighWaterLevel() [L169] tmp = isHighWaterLevel() [L171] COND TRUE \read(tmp) [L173] CALL activatePump() [L223] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L227] CALL, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L248] int retValue_acc ; [L252] CALL, EXPR isMethaneLevelCritical() [L863] int retValue_acc ; [L866] retValue_acc = methaneLevelCritical [L867] 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=1, waterLevel=2] [L252] RET, EXPR isMethaneLevelCritical() [L252] retValue_acc = isMethaneLevelCritical() [L254] 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=1, waterLevel=2] [L227] RET, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneAlarm()=0, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L227] tmp = isMethaneAlarm() [L229] COND FALSE !(\read(tmp)) [L233] CALL activatePump__wrappee__highWaterSensor() [L218] pumpRunning = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L233] RET activatePump__wrappee__highWaterSensor() [L173] RET activatePump() [L208] RET processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L144] RET processEnvironment() [L150] CALL __utac_acc__Specification4_spec__1() [L700] int tmp ; [L701] int tmp___0 ; [L705] CALL, EXPR getWaterLevel() [L895] int retValue_acc ; [L898] retValue_acc = waterLevel [L899] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=2, systemActive=1, waterLevel=2] [L705] RET, EXPR getWaterLevel() [L705] tmp = getWaterLevel() [L707] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=2, waterLevel=2] [L150] RET __utac_acc__Specification4_spec__1() [L107] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___2=1, waterLevel=2] [L64] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___2=1, waterLevel=2] [L66] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___2=1, waterLevel=2] [L72] tmp = __VERIFIER_nondet_int() [L74] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=2] [L82] tmp___0 = __VERIFIER_nondet_int() [L84] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=2] [L92] tmp___2 = __VERIFIER_nondet_int() [L94] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=2] [L107] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L135] COND TRUE \read(pumpRunning) [L137] CALL lowerWaterLevel() [L830] COND TRUE waterLevel > 0 [L831] waterLevel = waterLevel - 1 VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L137] RET lowerWaterLevel() [L142] COND TRUE \read(systemActive) [L144] CALL processEnvironment() [L190] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L193] COND TRUE \read(pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L195] CALL, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L248] int retValue_acc ; [L252] CALL, EXPR isMethaneLevelCritical() [L863] int retValue_acc ; [L866] retValue_acc = methaneLevelCritical [L867] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=1] [L252] RET, EXPR isMethaneLevelCritical() [L252] retValue_acc = isMethaneLevelCritical() [L254] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=1] [L195] RET, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneAlarm()=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L195] tmp = isMethaneAlarm() [L197] COND FALSE !(\read(tmp)) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=1] [L203] CALL processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L164] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L167] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L182] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L203] RET processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=1] [L144] RET processEnvironment() [L150] CALL __utac_acc__Specification4_spec__1() [L700] int tmp ; [L701] int tmp___0 ; [L705] CALL, EXPR getWaterLevel() [L895] int retValue_acc ; [L898] retValue_acc = waterLevel [L899] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L705] RET, EXPR getWaterLevel() [L705] tmp = getWaterLevel() [L707] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L150] RET __utac_acc__Specification4_spec__1() [L107] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L64] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L66] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L72] tmp = __VERIFIER_nondet_int() [L74] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L82] tmp___0 = __VERIFIER_nondet_int() [L84] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L92] tmp___2 = __VERIFIER_nondet_int() [L94] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L107] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L135] COND TRUE \read(pumpRunning) [L137] CALL lowerWaterLevel() [L830] COND TRUE waterLevel > 0 [L831] waterLevel = waterLevel - 1 VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L137] RET lowerWaterLevel() [L142] COND TRUE \read(systemActive) [L144] CALL processEnvironment() [L190] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L193] COND TRUE \read(pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L195] CALL, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L248] int retValue_acc ; [L252] CALL, EXPR isMethaneLevelCritical() [L863] int retValue_acc ; [L866] retValue_acc = methaneLevelCritical [L867] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=1, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=0] [L252] RET, EXPR isMethaneLevelCritical() [L252] retValue_acc = isMethaneLevelCritical() [L254] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=1, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=0] [L195] RET, EXPR isMethaneAlarm() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, isMethaneAlarm()=0, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L195] tmp = isMethaneAlarm() [L197] COND FALSE !(\read(tmp)) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L203] CALL processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L164] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L167] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L182] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L203] RET processEnvironment__wrappee__methaneQuery() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=0, waterLevel=0] [L144] RET processEnvironment() [L150] CALL __utac_acc__Specification4_spec__1() [L700] int tmp ; [L701] int tmp___0 ; [L705] CALL, EXPR getWaterLevel() [L895] int retValue_acc ; [L898] retValue_acc = waterLevel [L899] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=1, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=0] [L705] RET, EXPR getWaterLevel() [L705] tmp = getWaterLevel() [L707] COND TRUE tmp == 0 [L709] CALL, EXPR isPumpRunning() [L259] int retValue_acc ; [L262] retValue_acc = pumpRunning [L263] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=0] [L709] RET, EXPR isPumpRunning() [L709] tmp___0 = isPumpRunning() [L711] COND TRUE \read(tmp___0) [L713] CALL __automaton_fail() [L327] reach_error() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 88 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.3s, OverallIterations: 11, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1591 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1566 mSDsluCounter, 2503 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1733 mSDsCounter, 383 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1700 IncrementalHoareTripleChecker+Invalid, 2083 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 383 mSolverCounterUnsat, 770 mSDtfsCounter, 1700 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 334 GetRequests, 235 SyntacticMatches, 9 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=355occurred in iteration=10, InterpolantAutomatonStates: 94, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 10 MinimizatonAttempts, 118 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 625 NumberOfCodeBlocks, 625 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 577 ConstructedInterpolants, 0 QuantifiedInterpolants, 1102 SizeOfPredicates, 4 NumberOfNonLiveVariables, 305 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 12 InterpolantComputations, 9 PerfectInterpolantSequences, 49/72 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 21:01:45,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d4fc2541-9164-47d0-be7f-ba26c0b30e9d/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