./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-crafted/bAnd5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81438353-4ced-4c2f-a7f3-b04f2fda7a91/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81438353-4ced-4c2f-a7f3-b04f2fda7a91/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81438353-4ced-4c2f-a7f3-b04f2fda7a91/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81438353-4ced-4c2f-a7f3-b04f2fda7a91/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-crafted/bAnd5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81438353-4ced-4c2f-a7f3-b04f2fda7a91/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81438353-4ced-4c2f-a7f3-b04f2fda7a91/bin/uautomizer-verify-zZY32mL2XJ --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 d475be4701a825f0568ebf884900dce77e1216a215283bc51d05a41cc9a8ddb5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:42:06,845 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:42:06,965 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81438353-4ced-4c2f-a7f3-b04f2fda7a91/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-23 21:42:06,972 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:42:06,973 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:42:07,012 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:42:07,014 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:42:07,014 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:42:07,015 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 21:42:07,020 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 21:42:07,021 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:42:07,021 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:42:07,022 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 21:42:07,023 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 21:42:07,024 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 21:42:07,024 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:42:07,025 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:42:07,025 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:42:07,026 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:42:07,026 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:42:07,026 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:42:07,027 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:42:07,027 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:42:07,028 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:42:07,028 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:42:07,029 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:42:07,029 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:42:07,030 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:42:07,030 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:42:07,031 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:42:07,032 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:42:07,032 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:42:07,033 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:42:07,033 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:42:07,033 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:42:07,033 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 21:42:07,034 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:42:07,034 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:42:07,034 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 21:42:07,034 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:42:07,035 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 21:42:07,035 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:42:07,035 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81438353-4ced-4c2f-a7f3-b04f2fda7a91/bin/uautomizer-verify-zZY32mL2XJ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81438353-4ced-4c2f-a7f3-b04f2fda7a91/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d475be4701a825f0568ebf884900dce77e1216a215283bc51d05a41cc9a8ddb5 [2023-11-23 21:42:07,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:42:07,395 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:42:07,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:42:07,398 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:42:07,399 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:42:07,400 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81438353-4ced-4c2f-a7f3-b04f2fda7a91/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/array-crafted/bAnd5.i [2023-11-23 21:42:10,372 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:42:10,566 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:42:10,567 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81438353-4ced-4c2f-a7f3-b04f2fda7a91/sv-benchmarks/c/array-crafted/bAnd5.i [2023-11-23 21:42:10,574 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81438353-4ced-4c2f-a7f3-b04f2fda7a91/bin/uautomizer-verify-zZY32mL2XJ/data/e512b8aeb/a72feda44f74442b80eaa29670912a26/FLAG740b138b7 [2023-11-23 21:42:10,589 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81438353-4ced-4c2f-a7f3-b04f2fda7a91/bin/uautomizer-verify-zZY32mL2XJ/data/e512b8aeb/a72feda44f74442b80eaa29670912a26 [2023-11-23 21:42:10,591 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:42:10,593 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:42:10,594 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:42:10,595 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:42:10,600 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:42:10,601 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:42:10" (1/1) ... [2023-11-23 21:42:10,602 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55dab4c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:10, skipping insertion in model container [2023-11-23 21:42:10,602 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:42:10" (1/1) ... [2023-11-23 21:42:10,650 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:42:10,892 WARN L240 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_81438353-4ced-4c2f-a7f3-b04f2fda7a91/sv-benchmarks/c/array-crafted/bAnd5.i[1369,1382] [2023-11-23 21:42:10,896 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:42:10,909 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:42:10,954 WARN L240 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_81438353-4ced-4c2f-a7f3-b04f2fda7a91/sv-benchmarks/c/array-crafted/bAnd5.i[1369,1382] [2023-11-23 21:42:10,955 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:42:10,974 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:42:10,974 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:10 WrapperNode [2023-11-23 21:42:10,974 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:42:10,976 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:42:10,976 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:42:10,976 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:42:10,985 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:10" (1/1) ... [2023-11-23 21:42:11,002 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:10" (1/1) ... [2023-11-23 21:42:11,033 INFO L138 Inliner]: procedures = 16, calls = 30, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 82 [2023-11-23 21:42:11,033 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:42:11,034 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:42:11,034 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:42:11,034 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:42:11,046 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:10" (1/1) ... [2023-11-23 21:42:11,046 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:10" (1/1) ... [2023-11-23 21:42:11,053 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:10" (1/1) ... [2023-11-23 21:42:11,080 INFO L189 HeapSplitter]: Split 21 memory accesses to 3 slices as follows [2, 8, 11] [2023-11-23 21:42:11,081 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:10" (1/1) ... [2023-11-23 21:42:11,081 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:10" (1/1) ... [2023-11-23 21:42:11,086 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:10" (1/1) ... [2023-11-23 21:42:11,089 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:10" (1/1) ... [2023-11-23 21:42:11,090 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:10" (1/1) ... [2023-11-23 21:42:11,091 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:10" (1/1) ... [2023-11-23 21:42:11,102 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:42:11,103 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:42:11,103 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:42:11,103 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:42:11,104 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:10" (1/1) ... [2023-11-23 21:42:11,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:42:11,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81438353-4ced-4c2f-a7f3-b04f2fda7a91/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:42:11,134 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81438353-4ced-4c2f-a7f3-b04f2fda7a91/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:42:11,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81438353-4ced-4c2f-a7f3-b04f2fda7a91/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:42:11,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:42:11,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 21:42:11,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 21:42:11,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 21:42:11,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:42:11,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 21:42:11,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 21:42:11,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 21:42:11,180 INFO L130 BoogieDeclarations]: Found specification of procedure bAnd [2023-11-23 21:42:11,180 INFO L138 BoogieDeclarations]: Found implementation of procedure bAnd [2023-11-23 21:42:11,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:42:11,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:42:11,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 21:42:11,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 21:42:11,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 21:42:11,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:42:11,303 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:42:11,305 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:42:11,546 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:42:11,586 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:42:11,586 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-23 21:42:11,587 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:42:11 BoogieIcfgContainer [2023-11-23 21:42:11,587 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:42:11,590 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:42:11,590 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:42:11,593 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:42:11,594 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:42:10" (1/3) ... [2023-11-23 21:42:11,595 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7451855d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:42:11, skipping insertion in model container [2023-11-23 21:42:11,595 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:42:10" (2/3) ... [2023-11-23 21:42:11,595 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7451855d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:42:11, skipping insertion in model container [2023-11-23 21:42:11,596 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:42:11" (3/3) ... [2023-11-23 21:42:11,597 INFO L112 eAbstractionObserver]: Analyzing ICFG bAnd5.i [2023-11-23 21:42:11,617 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:42:11,618 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:42:11,671 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:42:11,678 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@156db929, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:42:11,679 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:42:11,683 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 20 states have internal predecessors, (30), 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) [2023-11-23 21:42:11,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-23 21:42:11,693 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:11,693 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:11,694 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:42:11,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:11,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1964731183, now seen corresponding path program 1 times [2023-11-23 21:42:11,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:11,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964287449] [2023-11-23 21:42:11,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:11,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:11,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:12,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 21:42:12,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:12,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 21:42:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:12,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-23 21:42:12,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:12,195 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 21:42:12,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:12,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964287449] [2023-11-23 21:42:12,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964287449] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:12,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:42:12,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:42:12,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396390889] [2023-11-23 21:42:12,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:12,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:42:12,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:12,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:42:12,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:42:12,238 INFO L87 Difference]: Start difference. First operand has 25 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 20 states have internal predecessors, (30), 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 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-11-23 21:42:12,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:12,292 INFO L93 Difference]: Finished difference Result 48 states and 72 transitions. [2023-11-23 21:42:12,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:42:12,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 26 [2023-11-23 21:42:12,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:12,303 INFO L225 Difference]: With dead ends: 48 [2023-11-23 21:42:12,303 INFO L226 Difference]: Without dead ends: 23 [2023-11-23 21:42:12,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:42:12,311 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:12,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:42:12,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-23 21:42:12,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-11-23 21:42:12,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 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) [2023-11-23 21:42:12,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2023-11-23 21:42:12,373 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 26 [2023-11-23 21:42:12,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:12,374 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2023-11-23 21:42:12,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2023-11-23 21:42:12,376 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2023-11-23 21:42:12,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-23 21:42:12,379 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:12,381 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:12,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:42:12,382 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:42:12,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:12,388 INFO L85 PathProgramCache]: Analyzing trace with hash -659427290, now seen corresponding path program 1 times [2023-11-23 21:42:12,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:12,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243792927] [2023-11-23 21:42:12,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:12,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:12,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:12,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 21:42:12,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:12,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 21:42:12,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:12,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 21:42:12,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:12,580 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-23 21:42:12,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:12,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243792927] [2023-11-23 21:42:12,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243792927] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:42:12,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348846329] [2023-11-23 21:42:12,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:12,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:42:12,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81438353-4ced-4c2f-a7f3-b04f2fda7a91/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:42:12,584 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81438353-4ced-4c2f-a7f3-b04f2fda7a91/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:42:12,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81438353-4ced-4c2f-a7f3-b04f2fda7a91/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 21:42:12,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:12,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 21:42:12,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:42:12,893 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 21:42:12,893 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:42:12,967 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 21:42:12,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348846329] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:42:12,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:42:12,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2023-11-23 21:42:12,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048878958] [2023-11-23 21:42:12,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:42:12,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 21:42:12,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:12,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 21:42:12,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:42:12,978 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 21:42:13,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:13,118 INFO L93 Difference]: Finished difference Result 47 states and 65 transitions. [2023-11-23 21:42:13,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 21:42:13,119 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 27 [2023-11-23 21:42:13,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:13,120 INFO L225 Difference]: With dead ends: 47 [2023-11-23 21:42:13,120 INFO L226 Difference]: Without dead ends: 28 [2023-11-23 21:42:13,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-23 21:42:13,126 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 34 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:13,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 76 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:42:13,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-11-23 21:42:13,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2023-11-23 21:42:13,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.25) internal successors, (25), 20 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) [2023-11-23 21:42:13,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2023-11-23 21:42:13,141 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 27 [2023-11-23 21:42:13,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:13,142 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2023-11-23 21:42:13,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 21:42:13,144 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2023-11-23 21:42:13,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-23 21:42:13,147 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:13,148 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:13,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81438353-4ced-4c2f-a7f3-b04f2fda7a91/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:42:13,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81438353-4ced-4c2f-a7f3-b04f2fda7a91/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:42:13,356 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:42:13,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:13,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1460644231, now seen corresponding path program 1 times [2023-11-23 21:42:13,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:13,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874261722] [2023-11-23 21:42:13,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:13,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:13,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:13,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 21:42:13,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:13,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 21:42:13,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:13,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 21:42:13,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:13,532 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-23 21:42:13,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:13,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874261722] [2023-11-23 21:42:13,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874261722] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:42:13,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890189638] [2023-11-23 21:42:13,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:13,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:42:13,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81438353-4ced-4c2f-a7f3-b04f2fda7a91/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:42:13,535 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81438353-4ced-4c2f-a7f3-b04f2fda7a91/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:42:13,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81438353-4ced-4c2f-a7f3-b04f2fda7a91/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 21:42:13,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:13,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 21:42:13,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:42:13,690 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-23 21:42:13,690 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:42:13,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890189638] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:42:13,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:42:13,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2023-11-23 21:42:13,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114342868] [2023-11-23 21:42:13,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:42:13,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:42:13,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:13,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:42:13,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:42:13,693 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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) [2023-11-23 21:42:13,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:13,732 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2023-11-23 21:42:13,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:42:13,732 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 37 [2023-11-23 21:42:13,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:13,734 INFO L225 Difference]: With dead ends: 40 [2023-11-23 21:42:13,734 INFO L226 Difference]: Without dead ends: 26 [2023-11-23 21:42:13,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:42:13,736 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 12 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:13,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 28 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:42:13,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-11-23 21:42:13,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-11-23 21:42:13,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 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) [2023-11-23 21:42:13,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2023-11-23 21:42:13,743 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 37 [2023-11-23 21:42:13,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:13,745 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2023-11-23 21:42:13,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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) [2023-11-23 21:42:13,745 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2023-11-23 21:42:13,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-23 21:42:13,747 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:13,747 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:13,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81438353-4ced-4c2f-a7f3-b04f2fda7a91/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:42:13,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81438353-4ced-4c2f-a7f3-b04f2fda7a91/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:42:13,965 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:42:13,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:13,966 INFO L85 PathProgramCache]: Analyzing trace with hash 321870837, now seen corresponding path program 1 times [2023-11-23 21:42:13,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:13,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676521931] [2023-11-23 21:42:13,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:13,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:14,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 21:42:14,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:14,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 21:42:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:14,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 21:42:14,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:15,185 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-23 21:42:15,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:15,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676521931] [2023-11-23 21:42:15,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676521931] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:42:15,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710277287] [2023-11-23 21:42:15,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:15,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:42:15,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81438353-4ced-4c2f-a7f3-b04f2fda7a91/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:42:15,188 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81438353-4ced-4c2f-a7f3-b04f2fda7a91/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:42:15,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81438353-4ced-4c2f-a7f3-b04f2fda7a91/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 21:42:15,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:15,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-23 21:42:15,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:42:15,765 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-23 21:42:15,766 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:42:16,122 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-23 21:42:16,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710277287] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:42:16,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:42:16,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 12] total 18 [2023-11-23 21:42:16,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412914581] [2023-11-23 21:42:16,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:42:16,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-23 21:42:16,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:16,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-23 21:42:16,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2023-11-23 21:42:16,128 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 18 states, 15 states have (on average 2.0) internal successors, (30), 13 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-23 21:42:16,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:16,357 INFO L93 Difference]: Finished difference Result 73 states and 99 transitions. [2023-11-23 21:42:16,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 21:42:16,358 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 2.0) internal successors, (30), 13 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 38 [2023-11-23 21:42:16,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:16,361 INFO L225 Difference]: With dead ends: 73 [2023-11-23 21:42:16,361 INFO L226 Difference]: Without dead ends: 52 [2023-11-23 21:42:16,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 75 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2023-11-23 21:42:16,363 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 19 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:16,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 239 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:42:16,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-11-23 21:42:16,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 38. [2023-11-23 21:42:16,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 31 states have internal predecessors, (37), 5 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-23 21:42:16,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 51 transitions. [2023-11-23 21:42:16,377 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 51 transitions. Word has length 38 [2023-11-23 21:42:16,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:16,378 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 51 transitions. [2023-11-23 21:42:16,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 2.0) internal successors, (30), 13 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-23 21:42:16,378 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 51 transitions. [2023-11-23 21:42:16,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-23 21:42:16,380 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:16,380 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:16,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81438353-4ced-4c2f-a7f3-b04f2fda7a91/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 21:42:16,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81438353-4ced-4c2f-a7f3-b04f2fda7a91/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:42:16,597 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:42:16,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:16,598 INFO L85 PathProgramCache]: Analyzing trace with hash 226459729, now seen corresponding path program 1 times [2023-11-23 21:42:16,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:16,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853518782] [2023-11-23 21:42:16,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:16,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:16,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:17,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 21:42:17,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:17,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 21:42:17,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:17,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-23 21:42:17,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:18,136 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 21 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 21:42:18,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:18,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853518782] [2023-11-23 21:42:18,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853518782] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:42:18,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620786982] [2023-11-23 21:42:18,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:18,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:42:18,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81438353-4ced-4c2f-a7f3-b04f2fda7a91/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:42:18,139 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81438353-4ced-4c2f-a7f3-b04f2fda7a91/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:42:18,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81438353-4ced-4c2f-a7f3-b04f2fda7a91/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 21:42:18,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:18,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 73 conjunts are in the unsatisfiable core [2023-11-23 21:42:18,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:42:18,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 21:42:18,559 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:42:18,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 22 [2023-11-23 21:42:18,845 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:42:18,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 25 [2023-11-23 21:42:18,925 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:42:18,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 22 [2023-11-23 21:42:19,401 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 1 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:42:19,401 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:42:20,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 176 treesize of output 156 [2023-11-23 21:42:20,603 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:42:20,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 117 treesize of output 107 [2023-11-23 21:42:20,717 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 21:42:20,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620786982] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:42:20,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:42:20,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 22, 18] total 49 [2023-11-23 21:42:20,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141812885] [2023-11-23 21:42:20,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:42:20,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-11-23 21:42:20,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:20,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-11-23 21:42:20,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=2072, Unknown=0, NotChecked=0, Total=2352 [2023-11-23 21:42:20,728 INFO L87 Difference]: Start difference. First operand 38 states and 51 transitions. Second operand has 49 states, 47 states have (on average 1.7659574468085106) internal successors, (83), 46 states have internal predecessors, (83), 6 states have call successors, (9), 4 states have call predecessors, (9), 8 states have return successors, (9), 4 states have call predecessors, (9), 6 states have call successors, (9) [2023-11-23 21:42:24,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:24,137 INFO L93 Difference]: Finished difference Result 227 states and 322 transitions. [2023-11-23 21:42:24,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-11-23 21:42:24,139 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 47 states have (on average 1.7659574468085106) internal successors, (83), 46 states have internal predecessors, (83), 6 states have call successors, (9), 4 states have call predecessors, (9), 8 states have return successors, (9), 4 states have call predecessors, (9), 6 states have call successors, (9) Word has length 39 [2023-11-23 21:42:24,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:24,150 INFO L225 Difference]: With dead ends: 227 [2023-11-23 21:42:24,151 INFO L226 Difference]: Without dead ends: 191 [2023-11-23 21:42:24,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2309 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=914, Invalid=6396, Unknown=0, NotChecked=0, Total=7310 [2023-11-23 21:42:24,163 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 307 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 1141 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 1251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:24,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 222 Invalid, 1251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1141 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 21:42:24,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-11-23 21:42:24,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 136. [2023-11-23 21:42:24,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 108 states have (on average 1.3055555555555556) internal successors, (141), 116 states have internal predecessors, (141), 16 states have call successors, (16), 4 states have call predecessors, (16), 11 states have return successors, (55), 15 states have call predecessors, (55), 16 states have call successors, (55) [2023-11-23 21:42:24,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 212 transitions. [2023-11-23 21:42:24,246 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 212 transitions. Word has length 39 [2023-11-23 21:42:24,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:24,249 INFO L495 AbstractCegarLoop]: Abstraction has 136 states and 212 transitions. [2023-11-23 21:42:24,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 47 states have (on average 1.7659574468085106) internal successors, (83), 46 states have internal predecessors, (83), 6 states have call successors, (9), 4 states have call predecessors, (9), 8 states have return successors, (9), 4 states have call predecessors, (9), 6 states have call successors, (9) [2023-11-23 21:42:24,249 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 212 transitions. [2023-11-23 21:42:24,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-23 21:42:24,261 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:24,261 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:24,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81438353-4ced-4c2f-a7f3-b04f2fda7a91/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 21:42:24,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81438353-4ced-4c2f-a7f3-b04f2fda7a91/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:42:24,468 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:42:24,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:24,469 INFO L85 PathProgramCache]: Analyzing trace with hash 186734509, now seen corresponding path program 2 times [2023-11-23 21:42:24,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:24,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113762199] [2023-11-23 21:42:24,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:24,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:25,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 21:42:25,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:25,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 21:42:25,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:25,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 21:42:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:25,676 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 21 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 21:42:25,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:25,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113762199] [2023-11-23 21:42:25,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113762199] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:42:25,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360466084] [2023-11-23 21:42:25,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 21:42:25,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:42:25,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81438353-4ced-4c2f-a7f3-b04f2fda7a91/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:42:25,679 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81438353-4ced-4c2f-a7f3-b04f2fda7a91/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:42:25,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81438353-4ced-4c2f-a7f3-b04f2fda7a91/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 21:42:25,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 21:42:25,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:42:25,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-23 21:42:25,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:42:25,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-23 21:42:26,023 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:42:26,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 22 [2023-11-23 21:42:26,324 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 21 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:42:26,325 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:42:26,855 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-23 21:42:26,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360466084] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:42:26,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:42:26,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 10] total 35 [2023-11-23 21:42:26,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672907236] [2023-11-23 21:42:26,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:42:26,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-23 21:42:26,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:26,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-23 21:42:26,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1046, Unknown=0, NotChecked=0, Total=1190 [2023-11-23 21:42:26,859 INFO L87 Difference]: Start difference. First operand 136 states and 212 transitions. Second operand has 35 states, 35 states have (on average 2.2857142857142856) internal successors, (80), 34 states have internal predecessors, (80), 7 states have call successors, (9), 3 states have call predecessors, (9), 8 states have return successors, (9), 4 states have call predecessors, (9), 7 states have call successors, (9) [2023-11-23 21:42:28,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 21:42:30,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 21:42:33,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 21:42:35,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 21:42:37,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 21:42:39,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 21:42:41,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 21:42:44,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 21:42:46,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 21:42:48,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 21:42:50,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 21:42:52,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 21:42:52,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:52,594 INFO L93 Difference]: Finished difference Result 302 states and 430 transitions. [2023-11-23 21:42:52,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-23 21:42:52,595 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.2857142857142856) internal successors, (80), 34 states have internal predecessors, (80), 7 states have call successors, (9), 3 states have call predecessors, (9), 8 states have return successors, (9), 4 states have call predecessors, (9), 7 states have call successors, (9) Word has length 39 [2023-11-23 21:42:52,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:52,598 INFO L225 Difference]: With dead ends: 302 [2023-11-23 21:42:52,598 INFO L226 Difference]: Without dead ends: 188 [2023-11-23 21:42:52,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 759 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=403, Invalid=2567, Unknown=0, NotChecked=0, Total=2970 [2023-11-23 21:42:52,602 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 93 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 43 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:52,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 227 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 825 Invalid, 12 Unknown, 0 Unchecked, 25.0s Time] [2023-11-23 21:42:52,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-11-23 21:42:52,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 156. [2023-11-23 21:42:52,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 125 states have (on average 1.288) internal successors, (161), 133 states have internal predecessors, (161), 17 states have call successors, (17), 6 states have call predecessors, (17), 13 states have return successors, (48), 16 states have call predecessors, (48), 17 states have call successors, (48) [2023-11-23 21:42:52,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 226 transitions. [2023-11-23 21:42:52,638 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 226 transitions. Word has length 39 [2023-11-23 21:42:52,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:52,638 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 226 transitions. [2023-11-23 21:42:52,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.2857142857142856) internal successors, (80), 34 states have internal predecessors, (80), 7 states have call successors, (9), 3 states have call predecessors, (9), 8 states have return successors, (9), 4 states have call predecessors, (9), 7 states have call successors, (9) [2023-11-23 21:42:52,639 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 226 transitions. [2023-11-23 21:42:52,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-23 21:42:52,641 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:52,641 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:52,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81438353-4ced-4c2f-a7f3-b04f2fda7a91/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 21:42:52,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81438353-4ced-4c2f-a7f3-b04f2fda7a91/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-23 21:42:52,856 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:42:52,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:52,856 INFO L85 PathProgramCache]: Analyzing trace with hash 706869020, now seen corresponding path program 3 times [2023-11-23 21:42:52,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:52,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599274322] [2023-11-23 21:42:52,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:52,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:52,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 21:42:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:53,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 21:42:53,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:53,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 21:42:53,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:53,049 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-23 21:42:53,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 21:42:53,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599274322] [2023-11-23 21:42:53,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599274322] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:42:53,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140343503] [2023-11-23 21:42:53,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 21:42:53,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:42:53,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81438353-4ced-4c2f-a7f3-b04f2fda7a91/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 21:42:53,052 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81438353-4ced-4c2f-a7f3-b04f2fda7a91/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:42:53,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81438353-4ced-4c2f-a7f3-b04f2fda7a91/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 21:42:53,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-23 21:42:53,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 21:42:53,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 21:42:53,172 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:42:53,310 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-23 21:42:53,311 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:42:53,472 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 19 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-23 21:42:53,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140343503] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:42:53,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 21:42:53,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 14 [2023-11-23 21:42:53,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499532000] [2023-11-23 21:42:53,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 21:42:53,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 21:42:53,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 21:42:53,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 21:42:53,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-11-23 21:42:53,476 INFO L87 Difference]: Start difference. First operand 156 states and 226 transitions. Second operand has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-23 21:42:53,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:42:53,747 INFO L93 Difference]: Finished difference Result 332 states and 491 transitions. [2023-11-23 21:42:53,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-23 21:42:53,748 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 40 [2023-11-23 21:42:53,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:42:53,755 INFO L225 Difference]: With dead ends: 332 [2023-11-23 21:42:53,756 INFO L226 Difference]: Without dead ends: 263 [2023-11-23 21:42:53,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 77 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2023-11-23 21:42:53,758 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 60 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:42:53,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 172 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:42:53,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2023-11-23 21:42:53,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 229. [2023-11-23 21:42:53,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 188 states have (on average 1.2872340425531914) internal successors, (242), 199 states have internal predecessors, (242), 21 states have call successors, (21), 9 states have call predecessors, (21), 19 states have return successors, (70), 20 states have call predecessors, (70), 21 states have call successors, (70) [2023-11-23 21:42:53,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 333 transitions. [2023-11-23 21:42:53,822 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 333 transitions. Word has length 40 [2023-11-23 21:42:53,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:42:53,823 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 333 transitions. [2023-11-23 21:42:53,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-23 21:42:53,823 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 333 transitions. [2023-11-23 21:42:53,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-23 21:42:53,825 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:42:53,826 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:42:53,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81438353-4ced-4c2f-a7f3-b04f2fda7a91/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 21:42:54,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81438353-4ced-4c2f-a7f3-b04f2fda7a91/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-23 21:42:54,049 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:42:54,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:42:54,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1870235005, now seen corresponding path program 1 times [2023-11-23 21:42:54,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 21:42:54,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384337409] [2023-11-23 21:42:54,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:42:54,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:42:54,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:56,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 21:42:56,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:57,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 21:42:57,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:42:57,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-23 21:42:57,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat