./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product38.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b69eb75-ce6b-4269-89a6-3b7a808ebfe1/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b69eb75-ce6b-4269-89a6-3b7a808ebfe1/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b69eb75-ce6b-4269-89a6-3b7a808ebfe1/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b69eb75-ce6b-4269-89a6-3b7a808ebfe1/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product38.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b69eb75-ce6b-4269-89a6-3b7a808ebfe1/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b69eb75-ce6b-4269-89a6-3b7a808ebfe1/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b77aa0b6bb6bc59dbd8795b5281a5f1c0be2cf01c1e68aab61a4eabad5ef322b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 17:36:19,052 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 17:36:19,053 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 17:36:19,071 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 17:36:19,072 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 17:36:19,073 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 17:36:19,074 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 17:36:19,076 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 17:36:19,077 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 17:36:19,078 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 17:36:19,079 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 17:36:19,080 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 17:36:19,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 17:36:19,081 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 17:36:19,082 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 17:36:19,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 17:36:19,084 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 17:36:19,085 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 17:36:19,087 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 17:36:19,088 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 17:36:19,090 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 17:36:19,091 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 17:36:19,092 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 17:36:19,093 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 17:36:19,096 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 17:36:19,097 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 17:36:19,097 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 17:36:19,098 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 17:36:19,098 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 17:36:19,100 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 17:36:19,100 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 17:36:19,100 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 17:36:19,101 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 17:36:19,102 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 17:36:19,103 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 17:36:19,103 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 17:36:19,104 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 17:36:19,104 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 17:36:19,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 17:36:19,105 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 17:36:19,105 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 17:36:19,106 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b69eb75-ce6b-4269-89a6-3b7a808ebfe1/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 17:36:19,126 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 17:36:19,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 17:36:19,126 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 17:36:19,126 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 17:36:19,127 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 17:36:19,127 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 17:36:19,128 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 17:36:19,128 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 17:36:19,128 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 17:36:19,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 17:36:19,128 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 17:36:19,129 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 17:36:19,129 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 17:36:19,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 17:36:19,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 17:36:19,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 17:36:19,129 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 17:36:19,130 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 17:36:19,130 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 17:36:19,130 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 17:36:19,130 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 17:36:19,130 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 17:36:19,130 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 17:36:19,130 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 17:36:19,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:36:19,131 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 17:36:19,131 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 17:36:19,131 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 17:36:19,131 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 17:36:19,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 17:36:19,131 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 17:36:19,131 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 17:36:19,132 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 17:36:19,132 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 17:36:19,132 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 17:36:19,132 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b69eb75-ce6b-4269-89a6-3b7a808ebfe1/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b69eb75-ce6b-4269-89a6-3b7a808ebfe1/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b77aa0b6bb6bc59dbd8795b5281a5f1c0be2cf01c1e68aab61a4eabad5ef322b [2022-12-13 17:36:19,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 17:36:19,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 17:36:19,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 17:36:19,353 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 17:36:19,354 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 17:36:19,355 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b69eb75-ce6b-4269-89a6-3b7a808ebfe1/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/product-lines/minepump_spec1_product38.cil.c [2022-12-13 17:36:21,954 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 17:36:22,159 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 17:36:22,160 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b69eb75-ce6b-4269-89a6-3b7a808ebfe1/sv-benchmarks/c/product-lines/minepump_spec1_product38.cil.c [2022-12-13 17:36:22,168 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b69eb75-ce6b-4269-89a6-3b7a808ebfe1/bin/uautomizer-uyxdKDjOR8/data/f15685dd6/117b308b3ff34725b3751accfa049b99/FLAGedbeedcbb [2022-12-13 17:36:22,546 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b69eb75-ce6b-4269-89a6-3b7a808ebfe1/bin/uautomizer-uyxdKDjOR8/data/f15685dd6/117b308b3ff34725b3751accfa049b99 [2022-12-13 17:36:22,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 17:36:22,554 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 17:36:22,557 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 17:36:22,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 17:36:22,563 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 17:36:22,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:36:22" (1/1) ... [2022-12-13 17:36:22,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@319b01a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:36:22, skipping insertion in model container [2022-12-13 17:36:22,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:36:22" (1/1) ... [2022-12-13 17:36:22,574 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 17:36:22,602 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 17:36:22,788 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b69eb75-ce6b-4269-89a6-3b7a808ebfe1/sv-benchmarks/c/product-lines/minepump_spec1_product38.cil.c[16839,16852] [2022-12-13 17:36:22,796 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:36:22,806 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 17:36:22,861 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b69eb75-ce6b-4269-89a6-3b7a808ebfe1/sv-benchmarks/c/product-lines/minepump_spec1_product38.cil.c[16839,16852] [2022-12-13 17:36:22,864 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:36:22,876 INFO L208 MainTranslator]: Completed translation [2022-12-13 17:36:22,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:36:22 WrapperNode [2022-12-13 17:36:22,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 17:36:22,877 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 17:36:22,877 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 17:36:22,877 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 17:36:22,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:36:22" (1/1) ... [2022-12-13 17:36:22,890 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:36:22" (1/1) ... [2022-12-13 17:36:22,906 INFO L138 Inliner]: procedures = 54, calls = 98, calls flagged for inlining = 22, calls inlined = 19, statements flattened = 186 [2022-12-13 17:36:22,906 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 17:36:22,907 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 17:36:22,907 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 17:36:22,907 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 17:36:22,913 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:36:22" (1/1) ... [2022-12-13 17:36:22,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:36:22" (1/1) ... [2022-12-13 17:36:22,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:36:22" (1/1) ... [2022-12-13 17:36:22,915 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:36:22" (1/1) ... [2022-12-13 17:36:22,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:36:22" (1/1) ... [2022-12-13 17:36:22,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:36:22" (1/1) ... [2022-12-13 17:36:22,921 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:36:22" (1/1) ... [2022-12-13 17:36:22,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:36:22" (1/1) ... [2022-12-13 17:36:22,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 17:36:22,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 17:36:22,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 17:36:22,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 17:36:22,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:36:22" (1/1) ... [2022-12-13 17:36:22,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:36:22,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b69eb75-ce6b-4269-89a6-3b7a808ebfe1/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:36:22,948 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b69eb75-ce6b-4269-89a6-3b7a808ebfe1/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 17:36:22,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b69eb75-ce6b-4269-89a6-3b7a808ebfe1/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 17:36:22,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 17:36:22,982 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-12-13 17:36:22,982 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-12-13 17:36:22,982 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2022-12-13 17:36:22,982 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2022-12-13 17:36:22,982 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-12-13 17:36:22,982 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-12-13 17:36:22,982 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-12-13 17:36:22,982 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-12-13 17:36:22,982 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2022-12-13 17:36:22,983 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2022-12-13 17:36:22,983 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-12-13 17:36:22,983 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-12-13 17:36:22,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 17:36:22,983 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-12-13 17:36:22,983 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-12-13 17:36:22,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 17:36:22,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 17:36:23,044 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 17:36:23,046 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 17:36:23,238 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 17:36:23,243 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 17:36:23,243 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 17:36:23,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:36:23 BoogieIcfgContainer [2022-12-13 17:36:23,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 17:36:23,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 17:36:23,246 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 17:36:23,248 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 17:36:23,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 05:36:22" (1/3) ... [2022-12-13 17:36:23,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a1d57c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:36:23, skipping insertion in model container [2022-12-13 17:36:23,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:36:22" (2/3) ... [2022-12-13 17:36:23,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a1d57c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:36:23, skipping insertion in model container [2022-12-13 17:36:23,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:36:23" (3/3) ... [2022-12-13 17:36:23,250 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product38.cil.c [2022-12-13 17:36:23,264 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 17:36:23,264 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 17:36:23,299 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:36:23,304 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;@69b7bc02, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:36:23,304 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 17:36:23,307 INFO L276 IsEmpty]: Start isEmpty. Operand has 86 states, 65 states have (on average 1.3846153846153846) internal successors, (90), 73 states have internal predecessors, (90), 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) [2022-12-13 17:36:23,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-13 17:36:23,314 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:36:23,314 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:36:23,314 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:36:23,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:36:23,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1437858382, now seen corresponding path program 1 times [2022-12-13 17:36:23,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:36:23,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104695333] [2022-12-13 17:36:23,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:36:23,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:36:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:36:23,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 17:36:23,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:36:23,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:36:23,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:36:23,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104695333] [2022-12-13 17:36:23,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104695333] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:36:23,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:36:23,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 17:36:23,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559723927] [2022-12-13 17:36:23,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:36:23,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 17:36:23,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:36:23,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 17:36:23,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 17:36:23,482 INFO L87 Difference]: Start difference. First operand has 86 states, 65 states have (on average 1.3846153846153846) internal successors, (90), 73 states have internal predecessors, (90), 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 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 17:36:23,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:36:23,507 INFO L93 Difference]: Finished difference Result 164 states and 223 transitions. [2022-12-13 17:36:23,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 17:36:23,508 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-12-13 17:36:23,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:36:23,515 INFO L225 Difference]: With dead ends: 164 [2022-12-13 17:36:23,515 INFO L226 Difference]: Without dead ends: 77 [2022-12-13 17:36:23,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 17:36:23,521 INFO L413 NwaCegarLoop]: 108 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, 108 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:36:23,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:36:23,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-12-13 17:36:23,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2022-12-13 17:36:23,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 58 states have (on average 1.3103448275862069) internal successors, (76), 65 states have internal predecessors, (76), 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) [2022-12-13 17:36:23,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 99 transitions. [2022-12-13 17:36:23,550 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 99 transitions. Word has length 23 [2022-12-13 17:36:23,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:36:23,550 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 99 transitions. [2022-12-13 17:36:23,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 17:36:23,551 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 99 transitions. [2022-12-13 17:36:23,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-13 17:36:23,552 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:36:23,552 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:36:23,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 17:36:23,553 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:36:23,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:36:23,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1625050219, now seen corresponding path program 1 times [2022-12-13 17:36:23,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:36:23,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100927382] [2022-12-13 17:36:23,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:36:23,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:36:23,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:36:23,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 17:36:23,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:36:23,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:36:23,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:36:23,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100927382] [2022-12-13 17:36:23,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100927382] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:36:23,620 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:36:23,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 17:36:23,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338017052] [2022-12-13 17:36:23,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:36:23,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 17:36:23,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:36:23,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 17:36:23,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:36:23,623 INFO L87 Difference]: Start difference. First operand 77 states and 99 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 17:36:23,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:36:23,636 INFO L93 Difference]: Finished difference Result 119 states and 153 transitions. [2022-12-13 17:36:23,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 17:36:23,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2022-12-13 17:36:23,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:36:23,637 INFO L225 Difference]: With dead ends: 119 [2022-12-13 17:36:23,638 INFO L226 Difference]: Without dead ends: 68 [2022-12-13 17:36:23,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 17:36:23,639 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 13 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:36:23,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 155 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:36:23,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-12-13 17:36:23,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2022-12-13 17:36:23,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 52 states have (on average 1.3269230769230769) internal successors, (69), 59 states have internal predecessors, (69), 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) [2022-12-13 17:36:23,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 87 transitions. [2022-12-13 17:36:23,645 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 87 transitions. Word has length 24 [2022-12-13 17:36:23,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:36:23,646 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 87 transitions. [2022-12-13 17:36:23,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 17:36:23,646 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 87 transitions. [2022-12-13 17:36:23,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-13 17:36:23,646 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:36:23,646 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:36:23,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 17:36:23,647 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:36:23,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:36:23,647 INFO L85 PathProgramCache]: Analyzing trace with hash 875018451, now seen corresponding path program 1 times [2022-12-13 17:36:23,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:36:23,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354076590] [2022-12-13 17:36:23,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:36:23,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:36:23,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:36:23,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 17:36:23,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:36:23,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:36:23,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:36:23,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354076590] [2022-12-13 17:36:23,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354076590] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:36:23,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:36:23,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 17:36:23,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876961231] [2022-12-13 17:36:23,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:36:23,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 17:36:23,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:36:23,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 17:36:23,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:36:23,733 INFO L87 Difference]: Start difference. First operand 68 states and 87 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 17:36:23,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:36:23,783 INFO L93 Difference]: Finished difference Result 129 states and 168 transitions. [2022-12-13 17:36:23,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 17:36:23,783 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2022-12-13 17:36:23,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:36:23,784 INFO L225 Difference]: With dead ends: 129 [2022-12-13 17:36:23,785 INFO L226 Difference]: Without dead ends: 68 [2022-12-13 17:36:23,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:36:23,786 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 112 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:36:23,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 208 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:36:23,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-12-13 17:36:23,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2022-12-13 17:36:23,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 52 states have (on average 1.3076923076923077) internal successors, (68), 59 states have internal predecessors, (68), 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) [2022-12-13 17:36:23,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 86 transitions. [2022-12-13 17:36:23,793 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 86 transitions. Word has length 29 [2022-12-13 17:36:23,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:36:23,793 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 86 transitions. [2022-12-13 17:36:23,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 17:36:23,793 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 86 transitions. [2022-12-13 17:36:23,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-12-13 17:36:23,794 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:36:23,794 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:36:23,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 17:36:23,794 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:36:23,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:36:23,795 INFO L85 PathProgramCache]: Analyzing trace with hash 2067559019, now seen corresponding path program 1 times [2022-12-13 17:36:23,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:36:23,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886106471] [2022-12-13 17:36:23,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:36:23,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:36:23,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:36:23,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 17:36:23,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:36:23,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 17:36:23,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:36:23,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 17:36:23,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:36:23,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:36:23,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:36:23,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886106471] [2022-12-13 17:36:23,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886106471] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:36:23,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:36:23,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 17:36:23,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979294399] [2022-12-13 17:36:23,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:36:23,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 17:36:23,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:36:23,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 17:36:23,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:36:23,890 INFO L87 Difference]: Start difference. First operand 68 states and 86 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 17:36:24,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:36:24,038 INFO L93 Difference]: Finished difference Result 201 states and 254 transitions. [2022-12-13 17:36:24,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:36:24,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 39 [2022-12-13 17:36:24,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:36:24,041 INFO L225 Difference]: With dead ends: 201 [2022-12-13 17:36:24,041 INFO L226 Difference]: Without dead ends: 140 [2022-12-13 17:36:24,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:36:24,044 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 149 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:36:24,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 262 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:36:24,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-12-13 17:36:24,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 134. [2022-12-13 17:36:24,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 102 states have (on average 1.2549019607843137) internal successors, (128), 109 states have internal predecessors, (128), 15 states have call successors, (15), 13 states have call predecessors, (15), 16 states have return successors, (20), 16 states have call predecessors, (20), 15 states have call successors, (20) [2022-12-13 17:36:24,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 163 transitions. [2022-12-13 17:36:24,058 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 163 transitions. Word has length 39 [2022-12-13 17:36:24,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:36:24,059 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 163 transitions. [2022-12-13 17:36:24,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 17:36:24,059 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 163 transitions. [2022-12-13 17:36:24,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-12-13 17:36:24,059 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:36:24,060 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:36:24,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 17:36:24,060 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:36:24,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:36:24,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1412403797, now seen corresponding path program 1 times [2022-12-13 17:36:24,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:36:24,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804786768] [2022-12-13 17:36:24,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:36:24,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:36:24,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:36:24,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 17:36:24,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:36:24,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 17:36:24,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:36:24,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:36:24,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:36:24,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804786768] [2022-12-13 17:36:24,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804786768] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:36:24,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:36:24,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:36:24,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777115092] [2022-12-13 17:36:24,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:36:24,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:36:24,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:36:24,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:36:24,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:36:24,136 INFO L87 Difference]: Start difference. First operand 134 states and 163 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 17:36:24,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:36:24,253 INFO L93 Difference]: Finished difference Result 269 states and 331 transitions. [2022-12-13 17:36:24,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:36:24,254 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 43 [2022-12-13 17:36:24,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:36:24,255 INFO L225 Difference]: With dead ends: 269 [2022-12-13 17:36:24,256 INFO L226 Difference]: Without dead ends: 142 [2022-12-13 17:36:24,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-12-13 17:36:24,257 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 56 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:36:24,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 333 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:36:24,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-12-13 17:36:24,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 137. [2022-12-13 17:36:24,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 105 states have (on average 1.2476190476190476) internal successors, (131), 112 states have internal predecessors, (131), 15 states have call successors, (15), 13 states have call predecessors, (15), 16 states have return successors, (20), 16 states have call predecessors, (20), 15 states have call successors, (20) [2022-12-13 17:36:24,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 166 transitions. [2022-12-13 17:36:24,275 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 166 transitions. Word has length 43 [2022-12-13 17:36:24,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:36:24,275 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 166 transitions. [2022-12-13 17:36:24,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 17:36:24,275 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 166 transitions. [2022-12-13 17:36:24,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-12-13 17:36:24,276 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:36:24,276 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:36:24,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 17:36:24,276 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:36:24,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:36:24,276 INFO L85 PathProgramCache]: Analyzing trace with hash -581740909, now seen corresponding path program 1 times [2022-12-13 17:36:24,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:36:24,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765540019] [2022-12-13 17:36:24,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:36:24,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:36:24,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:36:24,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 17:36:24,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:36:24,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 17:36:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:36:24,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:36:24,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:36:24,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765540019] [2022-12-13 17:36:24,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765540019] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:36:24,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:36:24,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 17:36:24,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021831785] [2022-12-13 17:36:24,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:36:24,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 17:36:24,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:36:24,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 17:36:24,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:36:24,364 INFO L87 Difference]: Start difference. First operand 137 states and 166 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 17:36:24,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:36:24,490 INFO L93 Difference]: Finished difference Result 280 states and 346 transitions. [2022-12-13 17:36:24,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 17:36:24,490 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 43 [2022-12-13 17:36:24,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:36:24,491 INFO L225 Difference]: With dead ends: 280 [2022-12-13 17:36:24,491 INFO L226 Difference]: Without dead ends: 150 [2022-12-13 17:36:24,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-12-13 17:36:24,493 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 100 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:36:24,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 363 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:36:24,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-12-13 17:36:24,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 139. [2022-12-13 17:36:24,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 107 states have (on average 1.2429906542056075) internal successors, (133), 114 states have internal predecessors, (133), 15 states have call successors, (15), 13 states have call predecessors, (15), 16 states have return successors, (20), 16 states have call predecessors, (20), 15 states have call successors, (20) [2022-12-13 17:36:24,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 168 transitions. [2022-12-13 17:36:24,504 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 168 transitions. Word has length 43 [2022-12-13 17:36:24,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:36:24,505 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 168 transitions. [2022-12-13 17:36:24,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 17:36:24,505 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 168 transitions. [2022-12-13 17:36:24,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-12-13 17:36:24,505 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:36:24,506 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:36:24,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 17:36:24,506 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:36:24,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:36:24,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1399389359, now seen corresponding path program 1 times [2022-12-13 17:36:24,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:36:24,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061733277] [2022-12-13 17:36:24,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:36:24,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:36:24,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:36:24,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 17:36:24,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:36:24,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 17:36:24,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:36:24,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:36:24,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:36:24,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061733277] [2022-12-13 17:36:24,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061733277] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:36:24,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:36:24,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 17:36:24,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289830680] [2022-12-13 17:36:24,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:36:24,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 17:36:24,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:36:24,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 17:36:24,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 17:36:24,565 INFO L87 Difference]: Start difference. First operand 139 states and 168 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 17:36:24,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:36:24,740 INFO L93 Difference]: Finished difference Result 394 states and 498 transitions. [2022-12-13 17:36:24,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 17:36:24,741 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 43 [2022-12-13 17:36:24,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:36:24,742 INFO L225 Difference]: With dead ends: 394 [2022-12-13 17:36:24,742 INFO L226 Difference]: Without dead ends: 262 [2022-12-13 17:36:24,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-13 17:36:24,743 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 188 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:36:24,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 278 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:36:24,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-12-13 17:36:24,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 254. [2022-12-13 17:36:24,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 194 states have (on average 1.2371134020618557) internal successors, (240), 205 states have internal predecessors, (240), 30 states have call successors, (30), 28 states have call predecessors, (30), 29 states have return successors, (45), 30 states have call predecessors, (45), 30 states have call successors, (45) [2022-12-13 17:36:24,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 315 transitions. [2022-12-13 17:36:24,765 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 315 transitions. Word has length 43 [2022-12-13 17:36:24,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:36:24,765 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 315 transitions. [2022-12-13 17:36:24,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 17:36:24,766 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 315 transitions. [2022-12-13 17:36:24,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-12-13 17:36:24,766 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:36:24,766 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:36:24,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 17:36:24,767 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:36:24,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:36:24,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1312233661, now seen corresponding path program 1 times [2022-12-13 17:36:24,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:36:24,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393169732] [2022-12-13 17:36:24,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:36:24,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:36:24,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:36:24,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 17:36:24,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:36:24,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 17:36:24,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:36:24,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 17:36:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:36:24,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:36:24,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:36:24,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393169732] [2022-12-13 17:36:24,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393169732] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:36:24,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:36:24,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:36:24,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799318781] [2022-12-13 17:36:24,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:36:24,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:36:24,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:36:24,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:36:24,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:36:24,846 INFO L87 Difference]: Start difference. First operand 254 states and 315 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-13 17:36:25,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:36:25,023 INFO L93 Difference]: Finished difference Result 276 states and 344 transitions. [2022-12-13 17:36:25,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 17:36:25,024 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2022-12-13 17:36:25,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:36:25,026 INFO L225 Difference]: With dead ends: 276 [2022-12-13 17:36:25,026 INFO L226 Difference]: Without dead ends: 274 [2022-12-13 17:36:25,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-12-13 17:36:25,027 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 111 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:36:25,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 308 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:36:25,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-12-13 17:36:25,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 254. [2022-12-13 17:36:25,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 194 states have (on average 1.2164948453608246) internal successors, (236), 205 states have internal predecessors, (236), 30 states have call successors, (30), 28 states have call predecessors, (30), 29 states have return successors, (45), 30 states have call predecessors, (45), 30 states have call successors, (45) [2022-12-13 17:36:25,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 311 transitions. [2022-12-13 17:36:25,055 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 311 transitions. Word has length 45 [2022-12-13 17:36:25,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:36:25,055 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 311 transitions. [2022-12-13 17:36:25,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-13 17:36:25,056 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 311 transitions. [2022-12-13 17:36:25,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-12-13 17:36:25,056 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:36:25,056 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:36:25,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 17:36:25,057 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:36:25,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:36:25,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1358417301, now seen corresponding path program 1 times [2022-12-13 17:36:25,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:36:25,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710887633] [2022-12-13 17:36:25,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:36:25,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:36:25,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:36:25,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 17:36:25,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:36:25,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 17:36:25,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:36:25,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 17:36:25,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:36:25,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:36:25,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:36:25,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710887633] [2022-12-13 17:36:25,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710887633] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:36:25,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:36:25,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 17:36:25,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439438018] [2022-12-13 17:36:25,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:36:25,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 17:36:25,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:36:25,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 17:36:25,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:36:25,151 INFO L87 Difference]: Start difference. First operand 254 states and 311 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-13 17:36:25,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:36:25,561 INFO L93 Difference]: Finished difference Result 820 states and 1035 transitions. [2022-12-13 17:36:25,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 17:36:25,561 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 47 [2022-12-13 17:36:25,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:36:25,563 INFO L225 Difference]: With dead ends: 820 [2022-12-13 17:36:25,563 INFO L226 Difference]: Without dead ends: 573 [2022-12-13 17:36:25,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2022-12-13 17:36:25,565 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 271 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 17:36:25,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 346 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 17:36:25,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2022-12-13 17:36:25,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 545. [2022-12-13 17:36:25,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 412 states have (on average 1.1844660194174756) internal successors, (488), 439 states have internal predecessors, (488), 68 states have call successors, (68), 56 states have call predecessors, (68), 64 states have return successors, (107), 68 states have call predecessors, (107), 68 states have call successors, (107) [2022-12-13 17:36:25,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 663 transitions. [2022-12-13 17:36:25,602 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 663 transitions. Word has length 47 [2022-12-13 17:36:25,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:36:25,602 INFO L495 AbstractCegarLoop]: Abstraction has 545 states and 663 transitions. [2022-12-13 17:36:25,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 5 states have internal predecessors, (40), 1 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-13 17:36:25,602 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 663 transitions. [2022-12-13 17:36:25,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-12-13 17:36:25,603 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:36:25,603 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:36:25,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 17:36:25,603 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:36:25,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:36:25,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1922431815, now seen corresponding path program 1 times [2022-12-13 17:36:25,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:36:25,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247651963] [2022-12-13 17:36:25,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:36:25,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:36:25,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:36:25,612 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 17:36:25,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:36:25,634 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 17:36:25,634 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 17:36:25,635 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-13 17:36:25,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 17:36:25,639 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:36:25,642 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 17:36:25,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 05:36:25 BoogieIcfgContainer [2022-12-13 17:36:25,669 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 17:36:25,669 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 17:36:25,670 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 17:36:25,670 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 17:36:25,670 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:36:23" (3/4) ... [2022-12-13 17:36:25,671 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-13 17:36:25,711 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b69eb75-ce6b-4269-89a6-3b7a808ebfe1/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 17:36:25,712 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 17:36:25,712 INFO L158 Benchmark]: Toolchain (without parser) took 3158.64ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 88.5MB in the beginning and 45.9MB in the end (delta: 42.5MB). Peak memory consumption was 68.5MB. Max. memory is 16.1GB. [2022-12-13 17:36:25,713 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 123.7MB. Free memory is still 98.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 17:36:25,713 INFO L158 Benchmark]: CACSL2BoogieTranslator took 319.74ms. Allocated memory is still 123.7MB. Free memory was 88.5MB in the beginning and 70.0MB in the end (delta: 18.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-13 17:36:25,713 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.46ms. Allocated memory is still 123.7MB. Free memory was 70.0MB in the beginning and 67.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 17:36:25,713 INFO L158 Benchmark]: Boogie Preprocessor took 16.80ms. Allocated memory is still 123.7MB. Free memory was 67.9MB in the beginning and 66.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 17:36:25,714 INFO L158 Benchmark]: RCFGBuilder took 320.81ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 66.2MB in the beginning and 120.0MB in the end (delta: -53.9MB). Peak memory consumption was 22.9MB. Max. memory is 16.1GB. [2022-12-13 17:36:25,714 INFO L158 Benchmark]: TraceAbstraction took 2423.08ms. Allocated memory is still 148.9MB. Free memory was 119.2MB in the beginning and 50.1MB in the end (delta: 69.1MB). Peak memory consumption was 68.6MB. Max. memory is 16.1GB. [2022-12-13 17:36:25,714 INFO L158 Benchmark]: Witness Printer took 42.29ms. Allocated memory is still 148.9MB. Free memory was 50.1MB in the beginning and 45.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 17:36:25,716 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 123.7MB. Free memory is still 98.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 319.74ms. Allocated memory is still 123.7MB. Free memory was 88.5MB in the beginning and 70.0MB in the end (delta: 18.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.46ms. Allocated memory is still 123.7MB. Free memory was 70.0MB in the beginning and 67.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.80ms. Allocated memory is still 123.7MB. Free memory was 67.9MB in the beginning and 66.2MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 320.81ms. Allocated memory was 123.7MB in the beginning and 148.9MB in the end (delta: 25.2MB). Free memory was 66.2MB in the beginning and 120.0MB in the end (delta: -53.9MB). Peak memory consumption was 22.9MB. Max. memory is 16.1GB. * TraceAbstraction took 2423.08ms. Allocated memory is still 148.9MB. Free memory was 119.2MB in the beginning and 50.1MB in the end (delta: 69.1MB). Peak memory consumption was 68.6MB. Max. memory is 16.1GB. * Witness Printer took 42.29ms. Allocated memory is still 148.9MB. Free memory was 50.1MB in the beginning and 45.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 847]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L50] int cleanupTimeShifts = 4; [L387] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L590] int pumpRunning = 0; [L591] int systemActive = 1; [L853] int waterLevel = 1; [L854] int methaneLevelCritical = 0; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L131] int retValue_acc ; [L132] int tmp ; [L136] FCALL select_helpers() [L137] FCALL select_features() [L138] CALL, EXPR valid_product() [L180] int retValue_acc ; [L183] retValue_acc = 1 [L184] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L138] RET, EXPR valid_product() [L138] tmp = valid_product() [L140] COND TRUE \read(tmp) [L142] FCALL setup() [L143] CALL runTest() [L122] CALL test() [L777] int splverifierCounter ; [L778] int tmp ; [L779] int tmp___0 ; [L780] int tmp___1 ; [L781] int tmp___2 ; [L784] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L786] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L788] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L794] tmp = __VERIFIER_nondet_int() [L796] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=1] [L798] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L871] COND TRUE waterLevel < 2 [L872] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L798] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=2] [L804] tmp___0 = __VERIFIER_nondet_int() [L806] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=1, waterLevel=2] [L808] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L883] COND FALSE !(\read(methaneLevelCritical)) [L886] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L808] RET changeMethaneLevel() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=1, waterLevel=2] [L814] tmp___2 = __VERIFIER_nondet_int() [L816] COND TRUE \read(tmp___2) [L818] CALL startSystem() [L771] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L818] RET startSystem() [L831] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L597] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L604] COND TRUE \read(systemActive) [L606] CALL processEnvironment() [L652] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L655] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L670] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L626] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L629] COND TRUE ! pumpRunning [L631] CALL, EXPR isHighWaterLevel() [L749] int retValue_acc ; [L750] int tmp ; [L751] int tmp___0 ; [L755] CALL, EXPR isHighWaterSensorDry() [L933] int retValue_acc ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L936] COND FALSE !(waterLevel < 2) [L940] retValue_acc = 0 [L941] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L755] RET, EXPR isHighWaterSensorDry() [L755] tmp = isHighWaterSensorDry() [L757] COND FALSE !(\read(tmp)) [L760] tmp___0 = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L762] retValue_acc = tmp___0 [L763] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L631] RET, EXPR isHighWaterLevel() [L631] tmp = isHighWaterLevel() [L633] COND TRUE \read(tmp) [L635] CALL activatePump() [L680] pumpRunning = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L635] RET activatePump() [L670] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L606] RET processEnvironment() [L612] CALL __utac_acc__Specification1_spec__1() [L193] int tmp ; [L194] int tmp___0 ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L198] CALL, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L892] int retValue_acc ; [L895] retValue_acc = methaneLevelCritical [L896] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L198] RET, EXPR isMethaneLevelCritical() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L198] tmp = isMethaneLevelCritical() [L200] COND TRUE \read(tmp) [L202] CALL, EXPR isPumpRunning() [L704] int retValue_acc ; [L707] retValue_acc = pumpRunning [L708] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L202] RET, EXPR isPumpRunning() [L202] tmp___0 = isPumpRunning() [L204] COND TRUE \read(tmp___0) [L206] CALL __automaton_fail() [L847] reach_error() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 86 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.4s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1031 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1000 mSDsluCounter, 2361 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1566 mSDsCounter, 266 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1054 IncrementalHoareTripleChecker+Invalid, 1320 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 266 mSolverCounterUnsat, 795 mSDtfsCounter, 1054 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=545occurred in iteration=9, InterpolantAutomatonStates: 73, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 78 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 387 NumberOfCodeBlocks, 387 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 327 ConstructedInterpolants, 0 QuantifiedInterpolants, 718 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-12-13 17:36:25,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b69eb75-ce6b-4269-89a6-3b7a808ebfe1/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE