./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product33.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_a64eec06-e0a8-47a0-9336-411c4bc0b66a/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64eec06-e0a8-47a0-9336-411c4bc0b66a/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64eec06-e0a8-47a0-9336-411c4bc0b66a/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64eec06-e0a8-47a0-9336-411c4bc0b66a/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product33.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64eec06-e0a8-47a0-9336-411c4bc0b66a/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64eec06-e0a8-47a0-9336-411c4bc0b66a/bin/uautomizer-tPACEb0tL8 --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 5399744cbc243992ccbbf21bf0e09dd5dced55fce1050770392b2964c31c4145 --- 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-e04fb08 [2022-11-16 11:54:46,642 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:54:46,644 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:54:46,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:54:46,686 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:54:46,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:54:46,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:54:46,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:54:46,692 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:54:46,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:54:46,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:54:46,701 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:54:46,701 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:54:46,708 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:54:46,711 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:54:46,712 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:54:46,712 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:54:46,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:54:46,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:54:46,716 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:54:46,718 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:54:46,725 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:54:46,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:54:46,730 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:54:46,737 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:54:46,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:54:46,738 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:54:46,738 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:54:46,739 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:54:46,740 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:54:46,740 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:54:46,741 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:54:46,741 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:54:46,742 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:54:46,743 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:54:46,743 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:54:46,744 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:54:46,744 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:54:46,744 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:54:46,745 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:54:46,746 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:54:46,751 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64eec06-e0a8-47a0-9336-411c4bc0b66a/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:54:46,790 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:54:46,791 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:54:46,791 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:54:46,791 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:54:46,792 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:54:46,792 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:54:46,793 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:54:46,793 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:54:46,793 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:54:46,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:54:46,795 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:54:46,795 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:54:46,795 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:54:46,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:54:46,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:54:46,796 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:54:46,796 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:54:46,796 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:54:46,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:54:46,796 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:54:46,796 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:54:46,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:54:46,797 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:54:46,797 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:54:46,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:54:46,797 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:54:46,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:54:46,799 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:54:46,799 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:54:46,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:54:46,800 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:54:46,800 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:54:46,800 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:54:46,800 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64eec06-e0a8-47a0-9336-411c4bc0b66a/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64eec06-e0a8-47a0-9336-411c4bc0b66a/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5399744cbc243992ccbbf21bf0e09dd5dced55fce1050770392b2964c31c4145 [2022-11-16 11:54:47,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:54:47,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:54:47,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:54:47,104 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:54:47,105 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:54:47,106 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64eec06-e0a8-47a0-9336-411c4bc0b66a/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/product-lines/minepump_spec4_product33.cil.c [2022-11-16 11:54:47,174 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64eec06-e0a8-47a0-9336-411c4bc0b66a/bin/uautomizer-tPACEb0tL8/data/c292f4b01/c391a4dec7474846944d1df5323afec5/FLAGb6aba9485 [2022-11-16 11:54:47,773 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:54:47,774 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64eec06-e0a8-47a0-9336-411c4bc0b66a/sv-benchmarks/c/product-lines/minepump_spec4_product33.cil.c [2022-11-16 11:54:47,786 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64eec06-e0a8-47a0-9336-411c4bc0b66a/bin/uautomizer-tPACEb0tL8/data/c292f4b01/c391a4dec7474846944d1df5323afec5/FLAGb6aba9485 [2022-11-16 11:54:48,061 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64eec06-e0a8-47a0-9336-411c4bc0b66a/bin/uautomizer-tPACEb0tL8/data/c292f4b01/c391a4dec7474846944d1df5323afec5 [2022-11-16 11:54:48,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:54:48,065 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:54:48,067 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:54:48,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:54:48,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:54:48,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:54:48" (1/1) ... [2022-11-16 11:54:48,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e684d1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:48, skipping insertion in model container [2022-11-16 11:54:48,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:54:48" (1/1) ... [2022-11-16 11:54:48,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:54:48,139 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:54:48,437 WARN L229 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_a64eec06-e0a8-47a0-9336-411c4bc0b66a/sv-benchmarks/c/product-lines/minepump_spec4_product33.cil.c[17260,17273] [2022-11-16 11:54:48,441 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:54:48,449 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:54:48,567 WARN L229 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_a64eec06-e0a8-47a0-9336-411c4bc0b66a/sv-benchmarks/c/product-lines/minepump_spec4_product33.cil.c[17260,17273] [2022-11-16 11:54:48,574 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:54:48,591 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:54:48,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:48 WrapperNode [2022-11-16 11:54:48,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:54:48,593 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:54:48,593 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:54:48,593 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:54:48,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:48" (1/1) ... [2022-11-16 11:54:48,623 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:48" (1/1) ... [2022-11-16 11:54:48,653 INFO L138 Inliner]: procedures = 52, calls = 149, calls flagged for inlining = 21, calls inlined = 17, statements flattened = 223 [2022-11-16 11:54:48,653 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:54:48,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:54:48,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:54:48,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:54:48,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:48" (1/1) ... [2022-11-16 11:54:48,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:48" (1/1) ... [2022-11-16 11:54:48,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:48" (1/1) ... [2022-11-16 11:54:48,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:48" (1/1) ... [2022-11-16 11:54:48,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:48" (1/1) ... [2022-11-16 11:54:48,689 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:48" (1/1) ... [2022-11-16 11:54:48,690 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:48" (1/1) ... [2022-11-16 11:54:48,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:48" (1/1) ... [2022-11-16 11:54:48,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:54:48,694 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:54:48,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:54:48,695 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:54:48,696 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:48" (1/1) ... [2022-11-16 11:54:48,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:54:48,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64eec06-e0a8-47a0-9336-411c4bc0b66a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:54:48,725 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64eec06-e0a8-47a0-9336-411c4bc0b66a/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:54:48,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64eec06-e0a8-47a0-9336-411c4bc0b66a/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:54:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:54:48,780 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-16 11:54:48,780 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-16 11:54:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-16 11:54:48,781 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-16 11:54:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-16 11:54:48,781 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-16 11:54:48,783 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-16 11:54:48,784 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-16 11:54:48,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:54:48,784 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-16 11:54:48,785 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-16 11:54:48,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:54:48,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:54:48,895 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:54:48,897 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:54:49,195 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:54:49,201 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:54:49,201 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 11:54:49,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:54:49 BoogieIcfgContainer [2022-11-16 11:54:49,215 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:54:49,217 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:54:49,217 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:54:49,225 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:54:49,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:54:48" (1/3) ... [2022-11-16 11:54:49,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78acc630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:54:49, skipping insertion in model container [2022-11-16 11:54:49,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:54:48" (2/3) ... [2022-11-16 11:54:49,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78acc630 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:54:49, skipping insertion in model container [2022-11-16 11:54:49,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:54:49" (3/3) ... [2022-11-16 11:54:49,228 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product33.cil.c [2022-11-16 11:54:49,254 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:54:49,255 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:54:49,330 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:54:49,340 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;@42c23b81, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:54:49,341 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:54:49,347 INFO L276 IsEmpty]: Start isEmpty. Operand has 70 states, 55 states have (on average 1.4181818181818182) internal successors, (78), 61 states have internal predecessors, (78), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 11:54:49,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-16 11:54:49,358 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:54:49,358 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:54:49,359 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:54:49,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:49,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1771114850, now seen corresponding path program 1 times [2022-11-16 11:54:49,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:49,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758450112] [2022-11-16 11:54:49,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:49,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:49,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:49,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:49,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:49,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758450112] [2022-11-16 11:54:49,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758450112] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:49,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:49,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:54:49,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340744728] [2022-11-16 11:54:49,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:49,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:54:49,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:49,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:54:49,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:54:49,755 INFO L87 Difference]: Start difference. First operand has 70 states, 55 states have (on average 1.4181818181818182) internal successors, (78), 61 states have internal predecessors, (78), 8 states have call successors, (8), 5 states have call predecessors, (8), 5 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:49,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:54:49,798 INFO L93 Difference]: Finished difference Result 132 states and 183 transitions. [2022-11-16 11:54:49,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:54:49,800 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-16 11:54:49,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:54:49,809 INFO L225 Difference]: With dead ends: 132 [2022-11-16 11:54:49,809 INFO L226 Difference]: Without dead ends: 61 [2022-11-16 11:54:49,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:54:49,816 INFO L413 NwaCegarLoop]: 88 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, 88 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:54:49,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:54:49,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-16 11:54:49,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-11-16 11:54:49,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 48 states have (on average 1.3333333333333333) internal successors, (64), 53 states have internal predecessors, (64), 8 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-16 11:54:49,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 79 transitions. [2022-11-16 11:54:49,856 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 79 transitions. Word has length 19 [2022-11-16 11:54:49,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:54:49,857 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 79 transitions. [2022-11-16 11:54:49,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:49,857 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 79 transitions. [2022-11-16 11:54:49,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-16 11:54:49,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:54:49,859 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:54:49,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:54:49,860 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:54:49,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:49,861 INFO L85 PathProgramCache]: Analyzing trace with hash -197401423, now seen corresponding path program 1 times [2022-11-16 11:54:49,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:49,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886139000] [2022-11-16 11:54:49,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:49,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:49,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:49,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:49,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:49,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886139000] [2022-11-16 11:54:49,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886139000] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:49,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:49,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:54:49,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689587892] [2022-11-16 11:54:49,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:49,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:54:49,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:49,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:54:49,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:54:49,972 INFO L87 Difference]: Start difference. First operand 61 states and 79 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:49,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:54:49,987 INFO L93 Difference]: Finished difference Result 88 states and 114 transitions. [2022-11-16 11:54:49,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:54:49,988 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-16 11:54:49,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:54:49,989 INFO L225 Difference]: With dead ends: 88 [2022-11-16 11:54:49,989 INFO L226 Difference]: Without dead ends: 52 [2022-11-16 11:54:49,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:54:49,991 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 12 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:54:49,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 116 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:54:49,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-16 11:54:49,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-11-16 11:54:49,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 47 states have internal predecessors, (57), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 11:54:50,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 67 transitions. [2022-11-16 11:54:50,000 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 67 transitions. Word has length 20 [2022-11-16 11:54:50,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:54:50,000 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 67 transitions. [2022-11-16 11:54:50,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:50,001 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 67 transitions. [2022-11-16 11:54:50,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 11:54:50,002 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:54:50,002 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:54:50,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:54:50,003 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:54:50,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:50,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1468907181, now seen corresponding path program 1 times [2022-11-16 11:54:50,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:50,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977644784] [2022-11-16 11:54:50,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:50,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:50,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:50,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:50,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:50,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977644784] [2022-11-16 11:54:50,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977644784] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:50,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:50,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:54:50,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735940637] [2022-11-16 11:54:50,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:50,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:54:50,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:50,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:54:50,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:54:50,118 INFO L87 Difference]: Start difference. First operand 52 states and 67 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:50,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:54:50,131 INFO L93 Difference]: Finished difference Result 97 states and 128 transitions. [2022-11-16 11:54:50,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:54:50,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-16 11:54:50,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:54:50,133 INFO L225 Difference]: With dead ends: 97 [2022-11-16 11:54:50,134 INFO L226 Difference]: Without dead ends: 52 [2022-11-16 11:54:50,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:54:50,136 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 49 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:54:50,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 65 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:54:50,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-16 11:54:50,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-11-16 11:54:50,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 47 states have internal predecessors, (56), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 11:54:50,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2022-11-16 11:54:50,146 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 24 [2022-11-16 11:54:50,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:54:50,146 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2022-11-16 11:54:50,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:50,147 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2022-11-16 11:54:50,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-16 11:54:50,148 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:54:50,148 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] [2022-11-16 11:54:50,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:54:50,149 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:54:50,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:50,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1368427132, now seen corresponding path program 1 times [2022-11-16 11:54:50,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:50,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437642307] [2022-11-16 11:54:50,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:50,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:50,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:50,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 11:54:50,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:50,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:50,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:50,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437642307] [2022-11-16 11:54:50,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437642307] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:50,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:50,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:54:50,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037836610] [2022-11-16 11:54:50,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:50,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:54:50,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:50,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:54:50,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:54:50,247 INFO L87 Difference]: Start difference. First operand 52 states and 66 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 11:54:50,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:54:50,315 INFO L93 Difference]: Finished difference Result 131 states and 171 transitions. [2022-11-16 11:54:50,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:54:50,316 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2022-11-16 11:54:50,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:54:50,317 INFO L225 Difference]: With dead ends: 131 [2022-11-16 11:54:50,318 INFO L226 Difference]: Without dead ends: 86 [2022-11-16 11:54:50,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:54:50,320 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 40 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:54:50,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 123 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:54:50,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-16 11:54:50,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 84. [2022-11-16 11:54:50,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 67 states have (on average 1.328358208955224) internal successors, (89), 73 states have internal predecessors, (89), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2022-11-16 11:54:50,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 107 transitions. [2022-11-16 11:54:50,356 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 107 transitions. Word has length 29 [2022-11-16 11:54:50,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:54:50,356 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 107 transitions. [2022-11-16 11:54:50,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 11:54:50,357 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 107 transitions. [2022-11-16 11:54:50,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-16 11:54:50,360 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:54:50,361 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] [2022-11-16 11:54:50,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:54:50,361 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:54:50,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:50,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1970576469, now seen corresponding path program 1 times [2022-11-16 11:54:50,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:50,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807863443] [2022-11-16 11:54:50,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:50,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:50,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:50,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:50,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:50,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807863443] [2022-11-16 11:54:50,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807863443] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:50,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:50,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:54:50,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118318131] [2022-11-16 11:54:50,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:50,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:54:50,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:50,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:54:50,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:54:50,574 INFO L87 Difference]: Start difference. First operand 84 states and 107 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:50,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:54:50,611 INFO L93 Difference]: Finished difference Result 228 states and 306 transitions. [2022-11-16 11:54:50,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:54:50,612 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-11-16 11:54:50,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:54:50,614 INFO L225 Difference]: With dead ends: 228 [2022-11-16 11:54:50,614 INFO L226 Difference]: Without dead ends: 151 [2022-11-16 11:54:50,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:54:50,616 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 36 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:54:50,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 120 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:54:50,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-11-16 11:54:50,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149. [2022-11-16 11:54:50,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 120 states have (on average 1.325) internal successors, (159), 128 states have internal predecessors, (159), 15 states have call successors, (15), 15 states have call predecessors, (15), 13 states have return successors, (21), 13 states have call predecessors, (21), 15 states have call successors, (21) [2022-11-16 11:54:50,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 195 transitions. [2022-11-16 11:54:50,642 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 195 transitions. Word has length 33 [2022-11-16 11:54:50,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:54:50,643 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 195 transitions. [2022-11-16 11:54:50,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:50,643 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 195 transitions. [2022-11-16 11:54:50,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-16 11:54:50,644 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:54:50,645 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] [2022-11-16 11:54:50,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:54:50,645 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:54:50,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:50,646 INFO L85 PathProgramCache]: Analyzing trace with hash -959459219, now seen corresponding path program 1 times [2022-11-16 11:54:50,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:50,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605771272] [2022-11-16 11:54:50,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:50,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:50,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:50,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:50,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605771272] [2022-11-16 11:54:50,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605771272] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:50,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:50,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:54:50,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632574381] [2022-11-16 11:54:50,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:50,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:54:50,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:50,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:54:50,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:54:50,745 INFO L87 Difference]: Start difference. First operand 149 states and 195 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:50,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:54:50,799 INFO L93 Difference]: Finished difference Result 321 states and 427 transitions. [2022-11-16 11:54:50,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:54:50,800 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-11-16 11:54:50,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:54:50,802 INFO L225 Difference]: With dead ends: 321 [2022-11-16 11:54:50,802 INFO L226 Difference]: Without dead ends: 179 [2022-11-16 11:54:50,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:54:50,810 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 50 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:54:50,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 286 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:54:50,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-11-16 11:54:50,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 155. [2022-11-16 11:54:50,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 126 states have (on average 1.3095238095238095) internal successors, (165), 134 states have internal predecessors, (165), 15 states have call successors, (15), 15 states have call predecessors, (15), 13 states have return successors, (21), 13 states have call predecessors, (21), 15 states have call successors, (21) [2022-11-16 11:54:50,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 201 transitions. [2022-11-16 11:54:50,856 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 201 transitions. Word has length 33 [2022-11-16 11:54:50,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:54:50,858 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 201 transitions. [2022-11-16 11:54:50,858 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:50,859 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 201 transitions. [2022-11-16 11:54:50,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-16 11:54:50,861 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:54:50,863 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] [2022-11-16 11:54:50,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:54:50,863 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:54:50,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:50,864 INFO L85 PathProgramCache]: Analyzing trace with hash -701293781, now seen corresponding path program 1 times [2022-11-16 11:54:50,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:50,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005637551] [2022-11-16 11:54:50,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:50,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:50,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:50,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:50,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:50,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005637551] [2022-11-16 11:54:50,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005637551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:50,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:50,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:54:50,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516448257] [2022-11-16 11:54:50,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:50,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:54:50,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:50,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:54:50,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:54:50,984 INFO L87 Difference]: Start difference. First operand 155 states and 201 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:51,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:54:51,032 INFO L93 Difference]: Finished difference Result 289 states and 377 transitions. [2022-11-16 11:54:51,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:54:51,032 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-11-16 11:54:51,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:54:51,034 INFO L225 Difference]: With dead ends: 289 [2022-11-16 11:54:51,034 INFO L226 Difference]: Without dead ends: 141 [2022-11-16 11:54:51,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:54:51,041 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 31 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:54:51,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 189 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:54:51,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-11-16 11:54:51,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 126. [2022-11-16 11:54:51,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 102 states have (on average 1.2843137254901962) internal successors, (131), 109 states have internal predecessors, (131), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (14), 11 states have call predecessors, (14), 12 states have call successors, (14) [2022-11-16 11:54:51,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 157 transitions. [2022-11-16 11:54:51,073 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 157 transitions. Word has length 33 [2022-11-16 11:54:51,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:54:51,074 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 157 transitions. [2022-11-16 11:54:51,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:51,074 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 157 transitions. [2022-11-16 11:54:51,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-16 11:54:51,075 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:54:51,075 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] [2022-11-16 11:54:51,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:54:51,076 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:54:51,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:51,076 INFO L85 PathProgramCache]: Analyzing trace with hash 299335100, now seen corresponding path program 1 times [2022-11-16 11:54:51,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:51,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769376731] [2022-11-16 11:54:51,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:51,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:51,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:51,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-16 11:54:51,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:51,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:51,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:51,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769376731] [2022-11-16 11:54:51,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769376731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:51,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:51,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:54:51,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452546140] [2022-11-16 11:54:51,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:51,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:54:51,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:51,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:54:51,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:54:51,175 INFO L87 Difference]: Start difference. First operand 126 states and 157 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 11:54:51,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:54:51,225 INFO L93 Difference]: Finished difference Result 243 states and 305 transitions. [2022-11-16 11:54:51,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:54:51,226 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), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2022-11-16 11:54:51,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:54:51,227 INFO L225 Difference]: With dead ends: 243 [2022-11-16 11:54:51,227 INFO L226 Difference]: Without dead ends: 124 [2022-11-16 11:54:51,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:54:51,229 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 25 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:54:51,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 248 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:54:51,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-11-16 11:54:51,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2022-11-16 11:54:51,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 100 states have (on average 1.27) internal successors, (127), 107 states have internal predecessors, (127), 12 states have call successors, (12), 12 states have call predecessors, (12), 11 states have return successors, (14), 11 states have call predecessors, (14), 12 states have call successors, (14) [2022-11-16 11:54:51,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 153 transitions. [2022-11-16 11:54:51,244 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 153 transitions. Word has length 35 [2022-11-16 11:54:51,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:54:51,245 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 153 transitions. [2022-11-16 11:54:51,245 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), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 11:54:51,245 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 153 transitions. [2022-11-16 11:54:51,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-16 11:54:51,246 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:54:51,246 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] [2022-11-16 11:54:51,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:54:51,247 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:54:51,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:51,247 INFO L85 PathProgramCache]: Analyzing trace with hash -77276925, now seen corresponding path program 1 times [2022-11-16 11:54:51,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:51,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231905900] [2022-11-16 11:54:51,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:51,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:51,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:51,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 11:54:51,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:51,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:51,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:51,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231905900] [2022-11-16 11:54:51,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231905900] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:51,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:51,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:54:51,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475357767] [2022-11-16 11:54:51,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:51,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:54:51,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:51,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:54:51,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:54:51,341 INFO L87 Difference]: Start difference. First operand 124 states and 153 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 11:54:51,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:54:51,549 INFO L93 Difference]: Finished difference Result 323 states and 425 transitions. [2022-11-16 11:54:51,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:54:51,550 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2022-11-16 11:54:51,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:54:51,557 INFO L225 Difference]: With dead ends: 323 [2022-11-16 11:54:51,557 INFO L226 Difference]: Without dead ends: 241 [2022-11-16 11:54:51,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:54:51,561 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 91 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 368 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 [2022-11-16 11:54:51,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 368 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:54:51,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-11-16 11:54:51,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 239. [2022-11-16 11:54:51,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 194 states have (on average 1.2371134020618557) internal successors, (240), 208 states have internal predecessors, (240), 22 states have call successors, (22), 19 states have call predecessors, (22), 22 states have return successors, (39), 21 states have call predecessors, (39), 22 states have call successors, (39) [2022-11-16 11:54:51,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 301 transitions. [2022-11-16 11:54:51,610 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 301 transitions. Word has length 37 [2022-11-16 11:54:51,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:54:51,610 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 301 transitions. [2022-11-16 11:54:51,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 11:54:51,611 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 301 transitions. [2022-11-16 11:54:51,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-16 11:54:51,617 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:54:51,617 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] [2022-11-16 11:54:51,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:54:51,617 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:54:51,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:51,618 INFO L85 PathProgramCache]: Analyzing trace with hash -294819370, now seen corresponding path program 1 times [2022-11-16 11:54:51,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:51,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641581802] [2022-11-16 11:54:51,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:51,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:51,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:51,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 11:54:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:51,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-16 11:54:51,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:51,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:51,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:51,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641581802] [2022-11-16 11:54:51,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641581802] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:54:51,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:54:51,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:54:51,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232005703] [2022-11-16 11:54:51,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:54:51,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:54:51,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:51,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:54:51,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:54:51,780 INFO L87 Difference]: Start difference. First operand 239 states and 301 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 11:54:51,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:54:51,971 INFO L93 Difference]: Finished difference Result 255 states and 318 transitions. [2022-11-16 11:54:51,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:54:51,971 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 39 [2022-11-16 11:54:51,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:54:51,973 INFO L225 Difference]: With dead ends: 255 [2022-11-16 11:54:51,973 INFO L226 Difference]: Without dead ends: 253 [2022-11-16 11:54:51,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:54:51,974 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 95 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:54:51,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 308 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 11:54:51,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-11-16 11:54:52,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 239. [2022-11-16 11:54:52,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 194 states have (on average 1.2268041237113403) internal successors, (238), 208 states have internal predecessors, (238), 22 states have call successors, (22), 19 states have call predecessors, (22), 22 states have return successors, (39), 21 states have call predecessors, (39), 22 states have call successors, (39) [2022-11-16 11:54:52,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 299 transitions. [2022-11-16 11:54:52,006 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 299 transitions. Word has length 39 [2022-11-16 11:54:52,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:54:52,006 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 299 transitions. [2022-11-16 11:54:52,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 5 states have internal predecessors, (34), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-16 11:54:52,006 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 299 transitions. [2022-11-16 11:54:52,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-16 11:54:52,010 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:54:52,011 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:54:52,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:54:52,012 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:54:52,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:52,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1467796324, now seen corresponding path program 1 times [2022-11-16 11:54:52,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:52,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913651551] [2022-11-16 11:54:52,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:52,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:52,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:52,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 11:54:52,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:52,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-16 11:54:52,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:52,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:54:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:52,219 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:52,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:52,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913651551] [2022-11-16 11:54:52,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913651551] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:54:52,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760051396] [2022-11-16 11:54:52,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:52,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:54:52,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64eec06-e0a8-47a0-9336-411c4bc0b66a/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:54:52,231 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64eec06-e0a8-47a0-9336-411c4bc0b66a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:54:52,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64eec06-e0a8-47a0-9336-411c4bc0b66a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:54:52,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:52,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 11:54:52,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:54:52,484 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:52,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:54:52,580 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:52,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760051396] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:54:52,581 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:54:52,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 8 [2022-11-16 11:54:52,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258769433] [2022-11-16 11:54:52,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:54:52,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:54:52,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:52,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:54:52,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:54:52,583 INFO L87 Difference]: Start difference. First operand 239 states and 299 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 11:54:52,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:54:52,983 INFO L93 Difference]: Finished difference Result 548 states and 724 transitions. [2022-11-16 11:54:52,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 11:54:52,984 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 61 [2022-11-16 11:54:52,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:54:52,986 INFO L225 Difference]: With dead ends: 548 [2022-11-16 11:54:52,987 INFO L226 Difference]: Without dead ends: 351 [2022-11-16 11:54:52,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 123 SyntacticMatches, 7 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:54:52,988 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 177 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:54:52,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 457 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 11:54:52,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2022-11-16 11:54:53,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 323. [2022-11-16 11:54:53,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 260 states have (on average 1.2307692307692308) internal successors, (320), 279 states have internal predecessors, (320), 31 states have call successors, (31), 27 states have call predecessors, (31), 31 states have return successors, (58), 28 states have call predecessors, (58), 31 states have call successors, (58) [2022-11-16 11:54:53,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 409 transitions. [2022-11-16 11:54:53,023 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 409 transitions. Word has length 61 [2022-11-16 11:54:53,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:54:53,024 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 409 transitions. [2022-11-16 11:54:53,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-16 11:54:53,024 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 409 transitions. [2022-11-16 11:54:53,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-16 11:54:53,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:54:53,026 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:54:53,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64eec06-e0a8-47a0-9336-411c4bc0b66a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 11:54:53,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64eec06-e0a8-47a0-9336-411c4bc0b66a/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:54:53,232 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:54:53,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:54:53,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1571547845, now seen corresponding path program 2 times [2022-11-16 11:54:53,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:54:53,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961961797] [2022-11-16 11:54:53,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:54:53,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:54:53,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:54:53,265 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 11:54:53,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 11:54:53,305 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 11:54:53,305 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 11:54:53,306 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 11:54:53,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:54:53,311 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:54:53,314 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 11:54:53,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 11:54:53 BoogieIcfgContainer [2022-11-16 11:54:53,380 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 11:54:53,380 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 11:54:53,380 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 11:54:53,381 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 11:54:53,381 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:54:49" (3/4) ... [2022-11-16 11:54:53,383 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-16 11:54:53,514 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64eec06-e0a8-47a0-9336-411c4bc0b66a/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 11:54:53,515 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 11:54:53,516 INFO L158 Benchmark]: Toolchain (without parser) took 5450.40ms. Allocated memory was 117.4MB in the beginning and 163.6MB in the end (delta: 46.1MB). Free memory was 79.3MB in the beginning and 49.0MB in the end (delta: 30.3MB). Peak memory consumption was 75.6MB. Max. memory is 16.1GB. [2022-11-16 11:54:53,516 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 117.4MB. Free memory is still 96.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:54:53,517 INFO L158 Benchmark]: CACSL2BoogieTranslator took 524.90ms. Allocated memory is still 117.4MB. Free memory was 79.1MB in the beginning and 84.7MB in the end (delta: -5.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 11:54:53,517 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.60ms. Allocated memory is still 117.4MB. Free memory was 84.7MB in the beginning and 82.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:54:53,517 INFO L158 Benchmark]: Boogie Preprocessor took 39.43ms. Allocated memory is still 117.4MB. Free memory was 82.2MB in the beginning and 80.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:54:53,518 INFO L158 Benchmark]: RCFGBuilder took 520.76ms. Allocated memory is still 117.4MB. Free memory was 80.6MB in the beginning and 63.7MB in the end (delta: 16.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-16 11:54:53,518 INFO L158 Benchmark]: TraceAbstraction took 4162.61ms. Allocated memory was 117.4MB in the beginning and 163.6MB in the end (delta: 46.1MB). Free memory was 62.8MB in the beginning and 56.3MB in the end (delta: 6.5MB). Peak memory consumption was 53.1MB. Max. memory is 16.1GB. [2022-11-16 11:54:53,519 INFO L158 Benchmark]: Witness Printer took 134.39ms. Allocated memory is still 163.6MB. Free memory was 56.3MB in the beginning and 49.0MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-16 11:54:53,521 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 117.4MB. Free memory is still 96.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 524.90ms. Allocated memory is still 117.4MB. Free memory was 79.1MB in the beginning and 84.7MB in the end (delta: -5.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.60ms. Allocated memory is still 117.4MB. Free memory was 84.7MB in the beginning and 82.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.43ms. Allocated memory is still 117.4MB. Free memory was 82.2MB in the beginning and 80.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 520.76ms. Allocated memory is still 117.4MB. Free memory was 80.6MB in the beginning and 63.7MB in the end (delta: 16.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 4162.61ms. Allocated memory was 117.4MB in the beginning and 163.6MB in the end (delta: 46.1MB). Free memory was 62.8MB in the beginning and 56.3MB in the end (delta: 6.5MB). Peak memory consumption was 53.1MB. Max. memory is 16.1GB. * Witness Printer took 134.39ms. Allocated memory is still 163.6MB. Free memory was 56.3MB in the beginning and 49.0MB in the end (delta: 7.3MB). Peak memory consumption was 6.3MB. 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: 879]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L219] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L626] int methaneLevelCritical = 0; [L722] int pumpRunning = 0; [L625] int waterLevel = 1; [L723] int systemActive = 1; [L416] int cleanupTimeShifts = 4; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L497] int retValue_acc ; [L498] int tmp ; [L502] FCALL select_helpers() [L503] FCALL select_features() [L504] CALL, EXPR valid_product() [L546] int retValue_acc ; [L549] retValue_acc = 1 [L550] return (retValue_acc); VAL [\result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L504] RET, EXPR valid_product() [L504] tmp = valid_product() [L506] COND TRUE \read(tmp) [L508] FCALL setup() [L509] CALL runTest() [L488] CALL test() [L556] int splverifierCounter ; [L557] int tmp ; [L558] int tmp___0 ; [L559] int tmp___1 ; [L560] int tmp___2 ; [L563] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L565] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L567] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L573] tmp = __VERIFIER_nondet_int() [L575] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=1] [L577] CALL waterRise() VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L643] COND TRUE waterLevel < 2 [L644] waterLevel = waterLevel + 1 VAL [\old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L577] RET waterRise() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, waterLevel=2] [L583] tmp___0 = __VERIFIER_nondet_int() [L585] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, waterLevel=2] [L593] tmp___2 = __VERIFIER_nondet_int() [L595] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___2=1, waterLevel=2] [L608] CALL timeShift() VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L730] COND FALSE !(\read(pumpRunning)) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L737] COND TRUE \read(systemActive) [L739] CALL processEnvironment() [L759] int tmp ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L762] COND TRUE ! pumpRunning [L764] CALL, EXPR isHighWaterLevel() [L856] int retValue_acc ; [L857] int tmp ; [L858] int tmp___0 ; [L862] CALL, EXPR isHighWaterSensorDry() [L705] int retValue_acc ; VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L708] COND FALSE !(waterLevel < 2) [L712] retValue_acc = 0 [L713] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L862] RET, EXPR isHighWaterSensorDry() [L862] tmp = isHighWaterSensorDry() [L864] COND FALSE !(\read(tmp)) [L867] tmp___0 = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L869] retValue_acc = tmp___0 [L870] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L764] RET, EXPR isHighWaterLevel() [L764] tmp = isHighWaterLevel() [L766] COND TRUE \read(tmp) [L768] CALL activatePump() [L787] pumpRunning = 1 VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L768] RET activatePump() [L739] RET processEnvironment() [L745] CALL __utac_acc__Specification4_spec__1() [L885] int tmp ; [L886] int tmp___0 ; [L890] CALL, EXPR getWaterLevel() [L696] int retValue_acc ; [L699] retValue_acc = waterLevel [L700] return (retValue_acc); VAL [\old(pumpRunning)=0, \old(waterLevel)=2, \result=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=2, systemActive=1, waterLevel=2] [L890] RET, EXPR getWaterLevel() [L890] tmp = getWaterLevel() [L892] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=0, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=2, waterLevel=2] [L745] RET __utac_acc__Specification4_spec__1() [L608] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___2=1, waterLevel=2] [L565] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___2=1, waterLevel=2] [L567] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=-1, tmp___0=0, tmp___2=1, waterLevel=2] [L573] tmp = __VERIFIER_nondet_int() [L575] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=2] [L583] tmp___0 = __VERIFIER_nondet_int() [L585] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=2] [L593] tmp___2 = __VERIFIER_nondet_int() [L595] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=2] [L608] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L730] COND TRUE \read(pumpRunning) [L732] CALL lowerWaterLevel() [L631] COND TRUE waterLevel > 0 [L632] waterLevel = waterLevel - 1 VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L732] RET lowerWaterLevel() [L737] COND TRUE \read(systemActive) [L739] CALL processEnvironment() [L759] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L762] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L777] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L739] RET processEnvironment() [L745] CALL __utac_acc__Specification4_spec__1() [L885] int tmp ; [L886] int tmp___0 ; [L890] CALL, EXPR getWaterLevel() [L696] int retValue_acc ; [L699] retValue_acc = waterLevel [L700] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=1] [L890] RET, EXPR getWaterLevel() [L890] tmp = getWaterLevel() [L892] COND FALSE !(tmp == 0) VAL [\old(pumpRunning)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, tmp=1, waterLevel=1] [L745] RET __utac_acc__Specification4_spec__1() [L608] RET timeShift() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L565] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L567] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L573] tmp = __VERIFIER_nondet_int() [L575] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L583] tmp___0 = __VERIFIER_nondet_int() [L585] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L593] tmp___2 = __VERIFIER_nondet_int() [L595] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, splverifierCounter=0, systemActive=1, tmp=0, tmp___0=0, tmp___2=1, waterLevel=1] [L608] CALL timeShift() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L730] COND TRUE \read(pumpRunning) [L732] CALL lowerWaterLevel() [L631] COND TRUE waterLevel > 0 [L632] waterLevel = waterLevel - 1 VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L732] RET lowerWaterLevel() [L737] COND TRUE \read(systemActive) [L739] CALL processEnvironment() [L759] int tmp ; VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L762] COND FALSE !(! pumpRunning) VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L777] FCALL processEnvironment__wrappee__base() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L739] RET processEnvironment() [L745] CALL __utac_acc__Specification4_spec__1() [L885] int tmp ; [L886] int tmp___0 ; [L890] CALL, EXPR getWaterLevel() [L696] int retValue_acc ; [L699] retValue_acc = waterLevel [L700] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=1, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=0, systemActive=1, waterLevel=0] [L890] RET, EXPR getWaterLevel() [L890] tmp = getWaterLevel() [L892] COND TRUE tmp == 0 [L894] CALL, EXPR isPumpRunning() [L811] int retValue_acc ; [L814] retValue_acc = pumpRunning [L815] return (retValue_acc); VAL [\old(pumpRunning)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=0] [L894] RET, EXPR isPumpRunning() [L894] tmp___0 = isPumpRunning() [L896] COND TRUE \read(tmp___0) [L898] CALL __automaton_fail() [L879] reach_error() VAL [\old(pumpRunning)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 70 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.0s, OverallIterations: 12, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 622 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 606 mSDsluCounter, 2368 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1548 mSDsCounter, 79 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 552 IncrementalHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 79 mSolverCounterUnsat, 820 mSDtfsCounter, 552 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 215 GetRequests, 153 SyntacticMatches, 7 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=323occurred in iteration=11, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 87 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 509 NumberOfCodeBlocks, 509 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 472 ConstructedInterpolants, 0 QuantifiedInterpolants, 944 SizeOfPredicates, 4 NumberOfNonLiveVariables, 379 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 13 InterpolantComputations, 10 PerfectInterpolantSequences, 35/48 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-16 11:54:53,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a64eec06-e0a8-47a0-9336-411c4bc0b66a/bin/uautomizer-tPACEb0tL8/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