./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-crafted/mapsum3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-crafted/mapsum3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --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 9b90ab1091eaaf5a02261d2d1915a4d1b86c95775292408734bcf8be79905641 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:22:28,731 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:22:28,861 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 14:22:28,872 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:22:28,872 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:22:28,908 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:22:28,909 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:22:28,909 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:22:28,910 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:22:28,910 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:22:28,910 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:22:28,910 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:22:28,911 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:22:28,911 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:22:28,911 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:22:28,912 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:22:28,912 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 14:22:28,912 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:22:28,912 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:22:28,912 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:22:28,913 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:22:28,913 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 14:22:28,913 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:22:28,913 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 14:22:28,913 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:22:28,914 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:22:28,914 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 14:22:28,914 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:22:28,914 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:22:28,915 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:22:28,915 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:22:28,915 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:22:28,915 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:22:28,915 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:22:28,915 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:22:28,915 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 14:22:28,916 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:22:28,916 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:22:28,916 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:22:28,916 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:22:28,916 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:22:28,916 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:22:28,916 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness 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 -> 9b90ab1091eaaf5a02261d2d1915a4d1b86c95775292408734bcf8be79905641 [2024-11-13 14:22:29,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:22:29,344 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:22:29,347 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:22:29,349 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:22:29,350 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:22:29,353 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/array-crafted/mapsum3.i Unable to find full path for "g++" [2024-11-13 14:22:31,784 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:22:32,104 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:22:32,104 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/sv-benchmarks/c/array-crafted/mapsum3.i [2024-11-13 14:22:32,116 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/data/63dfec629/04511abb21ae4abf9264f59ce1b2aa91/FLAG7ce170dc5 [2024-11-13 14:22:32,147 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/data/63dfec629/04511abb21ae4abf9264f59ce1b2aa91 [2024-11-13 14:22:32,151 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:22:32,153 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:22:32,157 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:22:32,158 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:22:32,164 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:22:32,166 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:22:32" (1/1) ... [2024-11-13 14:22:32,168 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24c8a64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:22:32, skipping insertion in model container [2024-11-13 14:22:32,171 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:22:32" (1/1) ... [2024-11-13 14:22:32,192 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:22:32,445 WARN L250 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_2b16924e-8893-4887-ac37-e9bb030b5239/sv-benchmarks/c/array-crafted/mapsum3.i[1312,1325] [2024-11-13 14:22:32,450 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:22:32,464 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:22:32,498 WARN L250 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_2b16924e-8893-4887-ac37-e9bb030b5239/sv-benchmarks/c/array-crafted/mapsum3.i[1312,1325] [2024-11-13 14:22:32,499 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:22:32,521 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:22:32,521 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:22:32 WrapperNode [2024-11-13 14:22:32,521 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:22:32,524 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:22:32,525 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:22:32,525 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:22:32,537 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:22:32" (1/1) ... [2024-11-13 14:22:32,545 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:22:32" (1/1) ... [2024-11-13 14:22:32,566 INFO L138 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2024-11-13 14:22:32,566 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:22:32,569 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:22:32,569 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:22:32,569 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:22:32,577 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:22:32" (1/1) ... [2024-11-13 14:22:32,577 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:22:32" (1/1) ... [2024-11-13 14:22:32,579 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:22:32" (1/1) ... [2024-11-13 14:22:32,600 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5]. [2024-11-13 14:22:32,601 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:22:32" (1/1) ... [2024-11-13 14:22:32,602 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:22:32" (1/1) ... [2024-11-13 14:22:32,608 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:22:32" (1/1) ... [2024-11-13 14:22:32,612 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:22:32" (1/1) ... [2024-11-13 14:22:32,614 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:22:32" (1/1) ... [2024-11-13 14:22:32,615 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:22:32" (1/1) ... [2024-11-13 14:22:32,617 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:22:32,618 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:22:32,618 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:22:32,618 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:22:32,619 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:22:32" (1/1) ... [2024-11-13 14:22:32,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:22:32,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:22:32,657 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:22:32,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:22:32,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:22:32,691 INFO L130 BoogieDeclarations]: Found specification of procedure mapsum [2024-11-13 14:22:32,691 INFO L138 BoogieDeclarations]: Found implementation of procedure mapsum [2024-11-13 14:22:32,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:22:32,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 14:22:32,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 14:22:32,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 14:22:32,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 14:22:32,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:22:32,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:22:32,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 14:22:32,692 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 14:22:32,692 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 14:22:32,792 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:22:32,795 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:22:33,071 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-13 14:22:33,071 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:22:33,090 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:22:33,090 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-13 14:22:33,091 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:22:33 BoogieIcfgContainer [2024-11-13 14:22:33,091 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:22:33,096 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:22:33,096 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:22:33,102 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:22:33,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:22:32" (1/3) ... [2024-11-13 14:22:33,104 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28198455 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:22:33, skipping insertion in model container [2024-11-13 14:22:33,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:22:32" (2/3) ... [2024-11-13 14:22:33,106 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28198455 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:22:33, skipping insertion in model container [2024-11-13 14:22:33,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:22:33" (3/3) ... [2024-11-13 14:22:33,108 INFO L112 eAbstractionObserver]: Analyzing ICFG mapsum3.i [2024-11-13 14:22:33,133 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:22:33,135 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG mapsum3.i that has 2 procedures, 24 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2024-11-13 14:22:33,210 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:22:33,229 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@4b6b14cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:22:33,229 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 14:22:33,235 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 19 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:22:33,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-13 14:22:33,245 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:22:33,246 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:22:33,247 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:22:33,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:22:33,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1775945572, now seen corresponding path program 1 times [2024-11-13 14:22:33,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:22:33,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758516091] [2024-11-13 14:22:33,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:22:33,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:22:33,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:33,648 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-13 14:22:33,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:33,685 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-13 14:22:33,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:33,702 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 14:22:33,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:33,724 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-13 14:22:33,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:22:33,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758516091] [2024-11-13 14:22:33,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758516091] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:22:33,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090408751] [2024-11-13 14:22:33,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:22:33,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:22:33,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:22:33,731 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:22:33,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:22:33,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:33,864 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 14:22:33,870 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:22:33,901 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 14:22:33,901 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:22:33,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090408751] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:22:33,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:22:33,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-13 14:22:33,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545915301] [2024-11-13 14:22:33,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:22:33,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:22:33,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:22:33,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:22:33,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:22:33,933 INFO L87 Difference]: Start difference. First operand has 24 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 19 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 14:22:33,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:22:33,971 INFO L93 Difference]: Finished difference Result 46 states and 65 transitions. [2024-11-13 14:22:33,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:22:33,974 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2024-11-13 14:22:33,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:22:34,004 INFO L225 Difference]: With dead ends: 46 [2024-11-13 14:22:34,004 INFO L226 Difference]: Without dead ends: 21 [2024-11-13 14:22:34,009 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:22:34,013 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:22:34,014 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 50 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:22:34,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-13 14:22:34,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-13 14:22:34,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:22:34,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2024-11-13 14:22:34,055 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 29 [2024-11-13 14:22:34,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:22:34,055 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2024-11-13 14:22:34,055 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 14:22:34,056 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2024-11-13 14:22:34,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-13 14:22:34,057 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:22:34,058 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:22:34,077 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:22:34,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-13 14:22:34,262 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:22:34,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:22:34,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1622166194, now seen corresponding path program 1 times [2024-11-13 14:22:34,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:22:34,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127194936] [2024-11-13 14:22:34,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:22:34,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:22:34,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:34,496 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-13 14:22:34,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:34,517 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-13 14:22:34,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:34,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-13 14:22:34,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:34,548 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 14:22:34,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:22:34,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127194936] [2024-11-13 14:22:34,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127194936] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:22:34,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817458820] [2024-11-13 14:22:34,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:22:34,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:22:34,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:22:34,551 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:22:34,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:22:34,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:34,702 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 14:22:34,704 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:22:34,725 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 14:22:34,725 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:22:34,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1817458820] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:22:34,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:22:34,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-13 14:22:34,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864914123] [2024-11-13 14:22:34,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:22:34,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:22:34,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:22:34,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:22:34,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:22:34,728 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 14:22:34,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:22:34,739 INFO L93 Difference]: Finished difference Result 37 states and 47 transitions. [2024-11-13 14:22:34,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:22:34,739 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), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2024-11-13 14:22:34,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:22:34,740 INFO L225 Difference]: With dead ends: 37 [2024-11-13 14:22:34,740 INFO L226 Difference]: Without dead ends: 22 [2024-11-13 14:22:34,741 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:22:34,741 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:22:34,742 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:22:34,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-13 14:22:34,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-13 14:22:34,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:22:34,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2024-11-13 14:22:34,747 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 30 [2024-11-13 14:22:34,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:22:34,747 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2024-11-13 14:22:34,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 14:22:34,748 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2024-11-13 14:22:34,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-13 14:22:34,749 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:22:34,749 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:22:34,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 14:22:34,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:22:34,953 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:22:34,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:22:34,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1242138374, now seen corresponding path program 1 times [2024-11-13 14:22:34,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:22:34,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146447543] [2024-11-13 14:22:34,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:22:34,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:22:34,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:35,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-13 14:22:35,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:35,200 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-13 14:22:35,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:35,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-13 14:22:35,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:35,259 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-13 14:22:35,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:22:35,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146447543] [2024-11-13 14:22:35,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146447543] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:22:35,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410754443] [2024-11-13 14:22:35,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:22:35,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:22:35,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:22:35,266 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:22:35,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 14:22:35,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:35,383 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 14:22:35,385 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:22:35,407 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 14:22:35,408 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:22:35,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410754443] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:22:35,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:22:35,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-13 14:22:35,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605217421] [2024-11-13 14:22:35,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:22:35,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:22:35,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:22:35,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:22:35,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:22:35,410 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 14:22:35,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:22:35,426 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2024-11-13 14:22:35,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:22:35,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2024-11-13 14:22:35,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:22:35,428 INFO L225 Difference]: With dead ends: 35 [2024-11-13 14:22:35,428 INFO L226 Difference]: Without dead ends: 23 [2024-11-13 14:22:35,428 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:22:35,429 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:22:35,430 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:22:35,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-13 14:22:35,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2024-11-13 14:22:35,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:22:35,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-11-13 14:22:35,440 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 33 [2024-11-13 14:22:35,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:22:35,442 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-11-13 14:22:35,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 14:22:35,442 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-11-13 14:22:35,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-13 14:22:35,443 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:22:35,443 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:22:35,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 14:22:35,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:22:35,650 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:22:35,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:22:35,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1265860680, now seen corresponding path program 1 times [2024-11-13 14:22:35,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:22:35,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698461208] [2024-11-13 14:22:35,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:22:35,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:22:35,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:35,791 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-13 14:22:35,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:35,834 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-13 14:22:35,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:35,850 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-13 14:22:35,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:35,885 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-13 14:22:35,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:22:35,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698461208] [2024-11-13 14:22:35,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698461208] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:22:35,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834205523] [2024-11-13 14:22:35,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:22:35,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:22:35,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:22:35,891 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:22:35,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 14:22:36,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:36,030 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:22:36,033 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:22:36,089 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-13 14:22:36,091 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:22:36,170 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-13 14:22:36,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834205523] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:22:36,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:22:36,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2024-11-13 14:22:36,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109443924] [2024-11-13 14:22:36,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:22:36,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 14:22:36,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:22:36,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 14:22:36,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:22:36,175 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-13 14:22:36,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:22:36,229 INFO L93 Difference]: Finished difference Result 46 states and 60 transitions. [2024-11-13 14:22:36,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 14:22:36,230 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 34 [2024-11-13 14:22:36,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:22:36,232 INFO L225 Difference]: With dead ends: 46 [2024-11-13 14:22:36,232 INFO L226 Difference]: Without dead ends: 27 [2024-11-13 14:22:36,232 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:22:36,233 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:22:36,234 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:22:36,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-13 14:22:36,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-13 14:22:36,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:22:36,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2024-11-13 14:22:36,240 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 34 [2024-11-13 14:22:36,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:22:36,241 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2024-11-13 14:22:36,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-13 14:22:36,241 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2024-11-13 14:22:36,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-13 14:22:36,242 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:22:36,242 INFO L215 NwaCegarLoop]: trace histogram [6, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:22:36,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 14:22:36,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:22:36,443 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:22:36,444 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:22:36,444 INFO L85 PathProgramCache]: Analyzing trace with hash 877299506, now seen corresponding path program 2 times [2024-11-13 14:22:36,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:22:36,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749832480] [2024-11-13 14:22:36,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:22:36,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:22:36,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:36,617 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-11-13 14:22:36,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:36,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-13 14:22:36,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:36,647 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-13 14:22:36,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:36,659 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-13 14:22:36,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:22:36,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749832480] [2024-11-13 14:22:36,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749832480] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:22:36,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717204208] [2024-11-13 14:22:36,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:22:36,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:22:36,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:22:36,668 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:22:36,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 14:22:36,809 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:22:36,809 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:22:36,811 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 14:22:36,814 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:22:36,899 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-13 14:22:36,899 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:22:37,055 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-13 14:22:37,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717204208] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:22:37,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:22:37,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-13 14:22:37,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389710655] [2024-11-13 14:22:37,056 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:22:37,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 14:22:37,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:22:37,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 14:22:37,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-13 14:22:37,059 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-13 14:22:37,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:22:37,118 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2024-11-13 14:22:37,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 14:22:37,119 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 40 [2024-11-13 14:22:37,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:22:37,120 INFO L225 Difference]: With dead ends: 54 [2024-11-13 14:22:37,120 INFO L226 Difference]: Without dead ends: 34 [2024-11-13 14:22:37,121 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-13 14:22:37,122 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:22:37,122 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:22:37,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-13 14:22:37,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-13 14:22:37,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.103448275862069) internal successors, (32), 29 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:22:37,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2024-11-13 14:22:37,130 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 40 [2024-11-13 14:22:37,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:22:37,131 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2024-11-13 14:22:37,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-13 14:22:37,131 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2024-11-13 14:22:37,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-13 14:22:37,133 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:22:37,133 INFO L215 NwaCegarLoop]: trace histogram [10, 6, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:22:37,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-13 14:22:37,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:22:37,334 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:22:37,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:22:37,334 INFO L85 PathProgramCache]: Analyzing trace with hash -503867036, now seen corresponding path program 3 times [2024-11-13 14:22:37,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:22:37,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45861551] [2024-11-13 14:22:37,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:22:37,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:22:37,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:37,797 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 14:22:37,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:37,807 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-13 14:22:37,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:37,817 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-13 14:22:37,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:37,829 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-13 14:22:37,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:22:37,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45861551] [2024-11-13 14:22:37,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45861551] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:22:37,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576021941] [2024-11-13 14:22:37,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:22:37,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:22:37,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:22:37,832 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:22:37,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 14:22:37,975 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 14:22:37,975 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:22:37,977 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 14:22:37,980 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:22:38,052 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-13 14:22:38,053 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:22:38,171 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-13 14:22:38,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576021941] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:22:38,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:22:38,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 19 [2024-11-13 14:22:38,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640569513] [2024-11-13 14:22:38,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:22:38,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 14:22:38,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:22:38,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 14:22:38,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2024-11-13 14:22:38,177 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 14:22:38,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:22:38,255 INFO L93 Difference]: Finished difference Result 60 states and 75 transitions. [2024-11-13 14:22:38,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-13 14:22:38,256 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 47 [2024-11-13 14:22:38,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:22:38,257 INFO L225 Difference]: With dead ends: 60 [2024-11-13 14:22:38,258 INFO L226 Difference]: Without dead ends: 39 [2024-11-13 14:22:38,258 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2024-11-13 14:22:38,261 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:22:38,262 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 139 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:22:38,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-13 14:22:38,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-13 14:22:38,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.088235294117647) internal successors, (37), 34 states have internal predecessors, (37), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:22:38,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2024-11-13 14:22:38,281 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 47 [2024-11-13 14:22:38,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:22:38,281 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2024-11-13 14:22:38,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 14:22:38,282 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2024-11-13 14:22:38,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-13 14:22:38,287 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:22:38,287 INFO L215 NwaCegarLoop]: trace histogram [18, 11, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:22:38,317 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 14:22:38,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:22:38,488 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:22:38,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:22:38,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1673900238, now seen corresponding path program 4 times [2024-11-13 14:22:38,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:22:38,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268202388] [2024-11-13 14:22:38,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:22:38,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:22:38,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:39,109 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-13 14:22:39,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:39,130 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-13 14:22:39,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:39,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-13 14:22:39,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:39,192 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-13 14:22:39,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:22:39,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268202388] [2024-11-13 14:22:39,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268202388] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:22:39,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129600333] [2024-11-13 14:22:39,196 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 14:22:39,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:22:39,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:22:39,199 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:22:39,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 14:22:39,398 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 14:22:39,398 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:22:39,404 INFO L255 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-13 14:22:39,408 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:22:39,475 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-13 14:22:39,477 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:22:39,940 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-13 14:22:39,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129600333] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:22:39,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:22:39,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2024-11-13 14:22:39,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419940602] [2024-11-13 14:22:39,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:22:39,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-13 14:22:39,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:22:39,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-13 14:22:39,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2024-11-13 14:22:39,946 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 27 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 27 states have internal predecessors, (48), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-13 14:22:40,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:22:40,022 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2024-11-13 14:22:40,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-13 14:22:40,023 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 27 states have internal predecessors, (48), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 60 [2024-11-13 14:22:40,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:22:40,023 INFO L225 Difference]: With dead ends: 77 [2024-11-13 14:22:40,024 INFO L226 Difference]: Without dead ends: 52 [2024-11-13 14:22:40,024 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2024-11-13 14:22:40,025 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:22:40,026 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:22:40,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-13 14:22:40,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-11-13 14:22:40,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 47 states have internal predecessors, (50), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:22:40,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2024-11-13 14:22:40,035 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 60 [2024-11-13 14:22:40,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:22:40,035 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2024-11-13 14:22:40,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.7777777777777777) internal successors, (48), 27 states have internal predecessors, (48), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-13 14:22:40,036 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2024-11-13 14:22:40,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-13 14:22:40,037 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:22:40,037 INFO L215 NwaCegarLoop]: trace histogram [24, 18, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:22:40,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-13 14:22:40,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:22:40,238 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:22:40,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:22:40,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1737700188, now seen corresponding path program 5 times [2024-11-13 14:22:40,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:22:40,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840646433] [2024-11-13 14:22:40,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:22:40,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:22:40,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:41,433 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-13 14:22:41,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:41,445 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-11-13 14:22:41,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:41,456 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-11-13 14:22:41,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:41,467 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-11-13 14:22:41,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:22:41,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840646433] [2024-11-13 14:22:41,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840646433] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:22:41,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865259792] [2024-11-13 14:22:41,468 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 14:22:41,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:22:41,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:22:41,471 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:22:41,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 14:22:42,662 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2024-11-13 14:22:42,663 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:22:42,667 INFO L255 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 14:22:42,670 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:22:42,910 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 155 proven. 21 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2024-11-13 14:22:42,910 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:22:43,198 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 52 proven. 73 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2024-11-13 14:22:43,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865259792] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:22:43,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:22:43,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 9, 9] total 41 [2024-11-13 14:22:43,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056003896] [2024-11-13 14:22:43,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:22:43,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-13 14:22:43,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:22:43,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-13 14:22:43,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=470, Invalid=1170, Unknown=0, NotChecked=0, Total=1640 [2024-11-13 14:22:43,205 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand has 41 states, 41 states have (on average 1.6341463414634145) internal successors, (67), 41 states have internal predecessors, (67), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 14:22:43,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:22:43,317 INFO L93 Difference]: Finished difference Result 86 states and 105 transitions. [2024-11-13 14:22:43,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-13 14:22:43,319 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.6341463414634145) internal successors, (67), 41 states have internal predecessors, (67), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 73 [2024-11-13 14:22:43,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:22:43,320 INFO L225 Difference]: With dead ends: 86 [2024-11-13 14:22:43,320 INFO L226 Difference]: Without dead ends: 61 [2024-11-13 14:22:43,326 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=470, Invalid=1170, Unknown=0, NotChecked=0, Total=1640 [2024-11-13 14:22:43,327 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:22:43,327 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 159 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:22:43,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-13 14:22:43,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-11-13 14:22:43,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 56 states have (on average 1.0535714285714286) internal successors, (59), 56 states have internal predecessors, (59), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:22:43,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2024-11-13 14:22:43,346 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 73 [2024-11-13 14:22:43,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:22:43,347 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2024-11-13 14:22:43,347 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.6341463414634145) internal successors, (67), 41 states have internal predecessors, (67), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 14:22:43,347 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2024-11-13 14:22:43,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-13 14:22:43,348 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:22:43,348 INFO L215 NwaCegarLoop]: trace histogram [42, 25, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:22:43,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-13 14:22:43,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:22:43,550 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:22:43,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:22:43,550 INFO L85 PathProgramCache]: Analyzing trace with hash 184231666, now seen corresponding path program 6 times [2024-11-13 14:22:43,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:22:43,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218739999] [2024-11-13 14:22:43,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:22:43,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:22:43,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:44,935 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-13 14:22:44,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:44,962 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-13 14:22:44,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:44,987 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2024-11-13 14:22:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:45,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1330 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 1005 trivial. 0 not checked. [2024-11-13 14:22:45,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:22:45,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218739999] [2024-11-13 14:22:45,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218739999] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:22:45,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121107627] [2024-11-13 14:22:45,016 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 14:22:45,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:22:45,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:22:45,020 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:22:45,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 14:22:45,232 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-13 14:22:45,232 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:22:45,234 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 14:22:45,237 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:22:45,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1330 backedges. 458 proven. 3 refuted. 0 times theorem prover too weak. 869 trivial. 0 not checked. [2024-11-13 14:22:45,334 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:22:45,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1330 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1327 trivial. 0 not checked. [2024-11-13 14:22:45,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121107627] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:22:45,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:22:45,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 5, 5] total 34 [2024-11-13 14:22:45,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41885247] [2024-11-13 14:22:45,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:22:45,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-13 14:22:45,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:22:45,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-13 14:22:45,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=405, Invalid=717, Unknown=0, NotChecked=0, Total=1122 [2024-11-13 14:22:45,470 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand has 34 states, 34 states have (on average 1.7647058823529411) internal successors, (60), 34 states have internal predecessors, (60), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 14:22:45,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:22:45,564 INFO L93 Difference]: Finished difference Result 99 states and 111 transitions. [2024-11-13 14:22:45,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-13 14:22:45,565 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.7647058823529411) internal successors, (60), 34 states have internal predecessors, (60), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 98 [2024-11-13 14:22:45,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:22:45,566 INFO L225 Difference]: With dead ends: 99 [2024-11-13 14:22:45,567 INFO L226 Difference]: Without dead ends: 66 [2024-11-13 14:22:45,568 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=405, Invalid=717, Unknown=0, NotChecked=0, Total=1122 [2024-11-13 14:22:45,572 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:22:45,572 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 152 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:22:45,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-13 14:22:45,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-11-13 14:22:45,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 61 states have (on average 1.0491803278688525) internal successors, (64), 61 states have internal predecessors, (64), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:22:45,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2024-11-13 14:22:45,587 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 98 [2024-11-13 14:22:45,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:22:45,588 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2024-11-13 14:22:45,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.7647058823529411) internal successors, (60), 34 states have internal predecessors, (60), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 14:22:45,588 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2024-11-13 14:22:45,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-13 14:22:45,590 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:22:45,590 INFO L215 NwaCegarLoop]: trace histogram [42, 26, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:22:45,615 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 14:22:45,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-13 14:22:45,795 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:22:45,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:22:45,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1151141916, now seen corresponding path program 7 times [2024-11-13 14:22:45,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:22:45,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909182437] [2024-11-13 14:22:45,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:22:45,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:22:45,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:47,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-13 14:22:47,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:47,105 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2024-11-13 14:22:47,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:47,118 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2024-11-13 14:22:47,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:47,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1374 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 1023 trivial. 0 not checked. [2024-11-13 14:22:47,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:22:47,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909182437] [2024-11-13 14:22:47,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909182437] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:22:47,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99561564] [2024-11-13 14:22:47,132 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 14:22:47,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:22:47,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:22:47,134 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:22:47,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 14:22:47,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:47,375 INFO L255 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-13 14:22:47,379 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:22:47,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1374 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 1023 trivial. 0 not checked. [2024-11-13 14:22:47,489 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:22:49,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1374 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 1023 trivial. 0 not checked. [2024-11-13 14:22:49,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99561564] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:22:49,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:22:49,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 57 [2024-11-13 14:22:49,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009318250] [2024-11-13 14:22:49,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:22:49,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-13 14:22:49,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:22:49,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-13 14:22:49,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2024-11-13 14:22:49,273 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand has 57 states, 57 states have (on average 1.368421052631579) internal successors, (78), 57 states have internal predecessors, (78), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-13 14:22:49,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:22:49,412 INFO L93 Difference]: Finished difference Result 131 states and 166 transitions. [2024-11-13 14:22:49,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-13 14:22:49,413 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 1.368421052631579) internal successors, (78), 57 states have internal predecessors, (78), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 103 [2024-11-13 14:22:49,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:22:49,414 INFO L225 Difference]: With dead ends: 131 [2024-11-13 14:22:49,414 INFO L226 Difference]: Without dead ends: 94 [2024-11-13 14:22:49,419 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2024-11-13 14:22:49,420 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:22:49,421 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 163 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:22:49,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-13 14:22:49,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-11-13 14:22:49,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 89 states have (on average 1.0337078651685394) internal successors, (92), 89 states have internal predecessors, (92), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:22:49,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 98 transitions. [2024-11-13 14:22:49,441 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 98 transitions. Word has length 103 [2024-11-13 14:22:49,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:22:49,443 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 98 transitions. [2024-11-13 14:22:49,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 1.368421052631579) internal successors, (78), 57 states have internal predecessors, (78), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-13 14:22:49,444 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 98 transitions. [2024-11-13 14:22:49,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2024-11-13 14:22:49,449 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:22:49,449 INFO L215 NwaCegarLoop]: trace histogram [54, 42, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:22:49,477 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 14:22:49,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-13 14:22:49,650 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:22:49,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:22:49,650 INFO L85 PathProgramCache]: Analyzing trace with hash 5197924, now seen corresponding path program 8 times [2024-11-13 14:22:49,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:22:49,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984420555] [2024-11-13 14:22:49,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:22:49,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:22:49,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:53,576 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-11-13 14:22:53,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:53,598 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2024-11-13 14:22:53,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:53,613 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2024-11-13 14:22:53,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:22:53,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2508 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 1023 trivial. 0 not checked. [2024-11-13 14:22:53,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:22:53,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984420555] [2024-11-13 14:22:53,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984420555] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:22:53,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156035441] [2024-11-13 14:22:53,629 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:22:53,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:22:53,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:22:53,632 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:22:53,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 14:22:53,984 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:22:53,984 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:22:53,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-13 14:22:53,993 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:22:54,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2508 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 1023 trivial. 0 not checked. [2024-11-13 14:22:54,138 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:22:59,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2508 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 1023 trivial. 0 not checked. [2024-11-13 14:22:59,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156035441] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:22:59,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:22:59,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57, 57] total 113 [2024-11-13 14:22:59,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676618734] [2024-11-13 14:22:59,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:22:59,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2024-11-13 14:22:59,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:22:59,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2024-11-13 14:22:59,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2024-11-13 14:22:59,495 INFO L87 Difference]: Start difference. First operand 94 states and 98 transitions. Second operand has 113 states, 113 states have (on average 1.1858407079646018) internal successors, (134), 113 states have internal predecessors, (134), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-13 14:22:59,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:22:59,893 INFO L93 Difference]: Finished difference Result 187 states and 250 transitions. [2024-11-13 14:22:59,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2024-11-13 14:22:59,894 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 1.1858407079646018) internal successors, (134), 113 states have internal predecessors, (134), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 131 [2024-11-13 14:22:59,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:22:59,898 INFO L225 Difference]: With dead ends: 187 [2024-11-13 14:22:59,898 INFO L226 Difference]: Without dead ends: 150 [2024-11-13 14:22:59,903 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=6328, Invalid=6328, Unknown=0, NotChecked=0, Total=12656 [2024-11-13 14:22:59,905 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:22:59,905 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 143 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:22:59,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-13 14:22:59,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2024-11-13 14:22:59,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 145 states have (on average 1.0206896551724138) internal successors, (148), 145 states have internal predecessors, (148), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:22:59,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 154 transitions. [2024-11-13 14:22:59,925 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 154 transitions. Word has length 131 [2024-11-13 14:22:59,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:22:59,925 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 154 transitions. [2024-11-13 14:22:59,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 1.1858407079646018) internal successors, (134), 113 states have internal predecessors, (134), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-13 14:22:59,926 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 154 transitions. [2024-11-13 14:22:59,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-11-13 14:22:59,928 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:22:59,931 INFO L215 NwaCegarLoop]: trace histogram [110, 42, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:22:59,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 14:23:00,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:23:00,135 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:23:00,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:23:00,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1203945828, now seen corresponding path program 9 times [2024-11-13 14:23:00,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:23:00,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3063256] [2024-11-13 14:23:00,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:23:00,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:23:00,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:23:11,191 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2024-11-13 14:23:11,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:23:11,202 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2024-11-13 14:23:11,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:23:11,213 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2024-11-13 14:23:11,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:23:11,229 INFO L134 CoverageAnalysis]: Checked inductivity of 7128 backedges. 0 proven. 6105 refuted. 0 times theorem prover too weak. 1023 trivial. 0 not checked. [2024-11-13 14:23:11,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:23:11,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3063256] [2024-11-13 14:23:11,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3063256] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:23:11,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025392079] [2024-11-13 14:23:11,229 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:23:11,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:23:11,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:23:11,233 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:23:11,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 14:23:11,642 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-13 14:23:11,643 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:23:11,646 INFO L255 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 14:23:11,651 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:23:12,165 INFO L134 CoverageAnalysis]: Checked inductivity of 7128 backedges. 458 proven. 21 refuted. 0 times theorem prover too weak. 6649 trivial. 0 not checked. [2024-11-13 14:23:12,166 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:23:12,695 INFO L134 CoverageAnalysis]: Checked inductivity of 7128 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 7107 trivial. 0 not checked. [2024-11-13 14:23:12,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025392079] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:23:12,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:23:12,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 9, 9] total 127 [2024-11-13 14:23:12,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564123736] [2024-11-13 14:23:12,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:23:12,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 127 states [2024-11-13 14:23:12,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:23:12,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 127 interpolants. [2024-11-13 14:23:12,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6447, Invalid=9555, Unknown=0, NotChecked=0, Total=16002 [2024-11-13 14:23:12,711 INFO L87 Difference]: Start difference. First operand 150 states and 154 transitions. Second operand has 127 states, 127 states have (on average 1.204724409448819) internal successors, (153), 127 states have internal predecessors, (153), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 14:23:12,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:23:12,976 INFO L93 Difference]: Finished difference Result 196 states and 212 transitions. [2024-11-13 14:23:12,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 127 states. [2024-11-13 14:23:12,977 INFO L78 Accepts]: Start accepts. Automaton has has 127 states, 127 states have (on average 1.204724409448819) internal successors, (153), 127 states have internal predecessors, (153), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 187 [2024-11-13 14:23:12,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:23:12,979 INFO L225 Difference]: With dead ends: 196 [2024-11-13 14:23:12,979 INFO L226 Difference]: Without dead ends: 159 [2024-11-13 14:23:12,983 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1540 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=6447, Invalid=9555, Unknown=0, NotChecked=0, Total=16002 [2024-11-13 14:23:12,983 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:23:12,984 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 170 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:23:12,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-13 14:23:12,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 159. [2024-11-13 14:23:12,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 154 states have (on average 1.0194805194805194) internal successors, (157), 154 states have internal predecessors, (157), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:23:12,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 163 transitions. [2024-11-13 14:23:12,999 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 163 transitions. Word has length 187 [2024-11-13 14:23:12,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:23:12,999 INFO L471 AbstractCegarLoop]: Abstraction has 159 states and 163 transitions. [2024-11-13 14:23:13,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 127 states, 127 states have (on average 1.204724409448819) internal successors, (153), 127 states have internal predecessors, (153), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-13 14:23:13,000 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 163 transitions. [2024-11-13 14:23:13,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-13 14:23:13,003 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:23:13,003 INFO L215 NwaCegarLoop]: trace histogram [111, 42, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:23:13,026 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 14:23:13,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:23:13,204 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:23:13,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:23:13,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1486864690, now seen corresponding path program 10 times [2024-11-13 14:23:13,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:23:13,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141380081] [2024-11-13 14:23:13,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:23:13,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:23:13,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:23:22,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2024-11-13 14:23:22,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:23:22,879 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2024-11-13 14:23:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:23:22,887 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2024-11-13 14:23:22,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:23:22,901 INFO L134 CoverageAnalysis]: Checked inductivity of 7323 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 1107 trivial. 0 not checked. [2024-11-13 14:23:22,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:23:22,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141380081] [2024-11-13 14:23:22,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141380081] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:23:22,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078460776] [2024-11-13 14:23:22,902 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 14:23:22,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:23:22,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:23:22,905 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:23:22,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 14:23:23,495 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 14:23:23,495 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:23:23,506 INFO L255 TraceCheckSpWp]: Trace formula consists of 1431 conjuncts, 113 conjuncts are in the unsatisfiable core [2024-11-13 14:23:23,514 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:23:23,839 INFO L134 CoverageAnalysis]: Checked inductivity of 7323 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 1107 trivial. 0 not checked. [2024-11-13 14:23:23,839 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:23:43,405 INFO L134 CoverageAnalysis]: Checked inductivity of 7323 backedges. 0 proven. 6216 refuted. 0 times theorem prover too weak. 1107 trivial. 0 not checked. [2024-11-13 14:23:43,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078460776] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:23:43,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:23:43,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114, 114] total 227 [2024-11-13 14:23:43,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912304910] [2024-11-13 14:23:43,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:23:43,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 227 states [2024-11-13 14:23:43,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:23:43,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 227 interpolants. [2024-11-13 14:23:43,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25651, Invalid=25651, Unknown=0, NotChecked=0, Total=51302 [2024-11-13 14:23:43,423 INFO L87 Difference]: Start difference. First operand 159 states and 163 transitions. Second operand has 227 states, 227 states have (on average 1.092511013215859) internal successors, (248), 227 states have internal predecessors, (248), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-13 14:23:44,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:23:44,216 INFO L93 Difference]: Finished difference Result 317 states and 437 transitions. [2024-11-13 14:23:44,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 226 states. [2024-11-13 14:23:44,219 INFO L78 Accepts]: Start accepts. Automaton has has 227 states, 227 states have (on average 1.092511013215859) internal successors, (248), 227 states have internal predecessors, (248), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 196 [2024-11-13 14:23:44,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:23:44,221 INFO L225 Difference]: With dead ends: 317 [2024-11-13 14:23:44,221 INFO L226 Difference]: Without dead ends: 272 [2024-11-13 14:23:44,228 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 25.4s TimeCoverageRelationStatistics Valid=25651, Invalid=25651, Unknown=0, NotChecked=0, Total=51302 [2024-11-13 14:23:44,229 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:23:44,229 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 123 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:23:44,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-11-13 14:23:44,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2024-11-13 14:23:44,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 267 states have (on average 1.0112359550561798) internal successors, (270), 267 states have internal predecessors, (270), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:23:44,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 276 transitions. [2024-11-13 14:23:44,251 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 276 transitions. Word has length 196 [2024-11-13 14:23:44,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:23:44,251 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 276 transitions. [2024-11-13 14:23:44,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 227 states, 227 states have (on average 1.092511013215859) internal successors, (248), 227 states have internal predecessors, (248), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-13 14:23:44,252 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 276 transitions. [2024-11-13 14:23:44,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-11-13 14:23:44,257 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:23:44,257 INFO L215 NwaCegarLoop]: trace histogram [224, 42, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:23:44,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-13 14:23:44,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-13 14:23:44,461 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:23:44,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:23:44,462 INFO L85 PathProgramCache]: Analyzing trace with hash 963281956, now seen corresponding path program 11 times [2024-11-13 14:23:44,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:23:44,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614046937] [2024-11-13 14:23:44,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:23:44,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:23:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:19,917 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2024-11-13 14:24:19,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:19,926 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-11-13 14:24:19,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:19,934 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2024-11-13 14:24:19,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:24:19,946 INFO L134 CoverageAnalysis]: Checked inductivity of 26307 backedges. 0 proven. 25200 refuted. 0 times theorem prover too weak. 1107 trivial. 0 not checked. [2024-11-13 14:24:19,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:24:19,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614046937] [2024-11-13 14:24:19,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614046937] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:24:19,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222232935] [2024-11-13 14:24:19,947 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 14:24:19,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:24:19,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:24:19,950 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:24:19,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b16924e-8893-4887-ac37-e9bb030b5239/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process