./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id_i25_o25-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/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_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_i25_o25-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/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_747f467c-e0c0-4522-a8de-93f0c9d887c0/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 76955366716759eb9478710f6ef46e3de93d252b9c3177ff4beaca56ee5c75a7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:40:20,346 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:40:20,462 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-23 22:40:20,470 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:40:20,471 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:40:20,516 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:40:20,517 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:40:20,517 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:40:20,518 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 22:40:20,523 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 22:40:20,524 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:40:20,524 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:40:20,525 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:40:20,527 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:40:20,528 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:40:20,528 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:40:20,528 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 22:40:20,529 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 22:40:20,529 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:40:20,530 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 22:40:20,530 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:40:20,531 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 22:40:20,531 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:40:20,532 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 22:40:20,532 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 22:40:20,533 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 22:40:20,533 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:40:20,534 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:40:20,534 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:40:20,535 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 22:40:20,536 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:40:20,537 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:40:20,537 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:40:20,537 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:40:20,537 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 22:40:20,538 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:40:20,538 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 22:40:20,538 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:40:20,538 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:40:20,539 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 22:40:20,539 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:40:20,543 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:40:20,544 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_747f467c-e0c0-4522-a8de-93f0c9d887c0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 76955366716759eb9478710f6ef46e3de93d252b9c3177ff4beaca56ee5c75a7 [2023-11-23 22:40:20,890 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:40:20,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:40:20,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:40:20,920 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:40:20,920 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:40:20,922 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/recursive-simple/id_i25_o25-2.c [2023-11-23 22:40:24,162 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:40:24,363 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:40:24,363 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/sv-benchmarks/c/recursive-simple/id_i25_o25-2.c [2023-11-23 22:40:24,371 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/data/a4538a144/cd3ff62562e9448799c64041625f3692/FLAG8c06a9d2f [2023-11-23 22:40:24,388 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/data/a4538a144/cd3ff62562e9448799c64041625f3692 [2023-11-23 22:40:24,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:40:24,393 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:40:24,395 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:40:24,395 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:40:24,401 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:40:24,402 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:40:24" (1/1) ... [2023-11-23 22:40:24,404 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4455aef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:40:24, skipping insertion in model container [2023-11-23 22:40:24,404 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:40:24" (1/1) ... [2023-11-23 22:40:24,430 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:40:24,630 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_747f467c-e0c0-4522-a8de-93f0c9d887c0/sv-benchmarks/c/recursive-simple/id_i25_o25-2.c[454,467] [2023-11-23 22:40:24,636 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:40:24,654 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:40:24,674 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_747f467c-e0c0-4522-a8de-93f0c9d887c0/sv-benchmarks/c/recursive-simple/id_i25_o25-2.c[454,467] [2023-11-23 22:40:24,675 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:40:24,692 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:40:24,693 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:40:24 WrapperNode [2023-11-23 22:40:24,693 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:40:24,696 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:40:24,696 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:40:24,696 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:40:24,705 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:40:24" (1/1) ... [2023-11-23 22:40:24,713 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:40:24" (1/1) ... [2023-11-23 22:40:24,730 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2023-11-23 22:40:24,730 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:40:24,731 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:40:24,731 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:40:24,731 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:40:24,742 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:40:24" (1/1) ... [2023-11-23 22:40:24,743 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:40:24" (1/1) ... [2023-11-23 22:40:24,744 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:40:24" (1/1) ... [2023-11-23 22:40:24,755 INFO L189 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-23 22:40:24,755 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:40:24" (1/1) ... [2023-11-23 22:40:24,755 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:40:24" (1/1) ... [2023-11-23 22:40:24,764 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:40:24" (1/1) ... [2023-11-23 22:40:24,765 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:40:24" (1/1) ... [2023-11-23 22:40:24,767 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:40:24" (1/1) ... [2023-11-23 22:40:24,768 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:40:24" (1/1) ... [2023-11-23 22:40:24,770 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:40:24,771 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:40:24,772 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:40:24,773 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:40:24,774 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:40:24" (1/1) ... [2023-11-23 22:40:24,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:40:24,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:40:24,811 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 22:40:24,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 22:40:24,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:40:24,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:40:24,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:40:24,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 22:40:24,865 INFO L130 BoogieDeclarations]: Found specification of procedure id [2023-11-23 22:40:24,865 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2023-11-23 22:40:24,941 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:40:24,943 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:40:25,049 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:40:25,073 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:40:25,073 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 22:40:25,074 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:40:25 BoogieIcfgContainer [2023-11-23 22:40:25,074 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:40:25,078 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 22:40:25,078 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 22:40:25,082 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 22:40:25,100 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:40:24" (1/3) ... [2023-11-23 22:40:25,101 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b889540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:40:25, skipping insertion in model container [2023-11-23 22:40:25,102 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:40:24" (2/3) ... [2023-11-23 22:40:25,102 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b889540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:40:25, skipping insertion in model container [2023-11-23 22:40:25,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:40:25" (3/3) ... [2023-11-23 22:40:25,104 INFO L112 eAbstractionObserver]: Analyzing ICFG id_i25_o25-2.c [2023-11-23 22:40:25,128 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 22:40:25,128 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 22:40:25,224 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:40:25,236 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;@1b7d6e4a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:40:25,236 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 22:40:25,243 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 22:40:25,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 22:40:25,255 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:40:25,256 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:40:25,257 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:40:25,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:40:25,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1493244868, now seen corresponding path program 1 times [2023-11-23 22:40:25,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:40:25,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334406225] [2023-11-23 22:40:25,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:40:25,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:40:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:25,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:40:25,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:25,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:40:25,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:40:25,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334406225] [2023-11-23 22:40:25,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334406225] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:40:25,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:40:25,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 22:40:25,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547191605] [2023-11-23 22:40:25,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:40:25,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 22:40:25,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:40:25,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 22:40:25,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:40:25,770 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 22:40:25,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:40:25,851 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2023-11-23 22:40:25,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:40:25,854 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-11-23 22:40:25,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:40:25,862 INFO L225 Difference]: With dead ends: 23 [2023-11-23 22:40:25,862 INFO L226 Difference]: Without dead ends: 14 [2023-11-23 22:40:25,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:40:25,871 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 22:40:25,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 41 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 22:40:25,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-11-23 22:40:25,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-11-23 22:40:25,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 10 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 22:40:25,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2023-11-23 22:40:25,914 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2023-11-23 22:40:25,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:40:25,914 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2023-11-23 22:40:25,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 22:40:25,915 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2023-11-23 22:40:25,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-23 22:40:25,917 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:40:25,918 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:40:25,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 22:40:25,919 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:40:25,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:40:25,920 INFO L85 PathProgramCache]: Analyzing trace with hash -642736818, now seen corresponding path program 1 times [2023-11-23 22:40:25,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:40:25,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323894369] [2023-11-23 22:40:25,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:40:25,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:40:25,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:26,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:40:26,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:26,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:26,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:26,197 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 22:40:26,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:40:26,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323894369] [2023-11-23 22:40:26,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323894369] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:40:26,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109879135] [2023-11-23 22:40:26,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:40:26,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:40:26,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:40:26,202 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:40:26,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 22:40:26,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:26,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 22:40:26,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:40:26,384 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 22:40:26,384 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:40:26,646 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 22:40:26,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109879135] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:40:26,648 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:40:26,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 12 [2023-11-23 22:40:26,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132589842] [2023-11-23 22:40:26,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:40:26,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 22:40:26,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:40:26,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 22:40:26,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-23 22:40:26,653 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 12 states, 10 states have (on average 2.0) internal successors, (20), 11 states have internal predecessors, (20), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-23 22:40:26,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:40:26,738 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2023-11-23 22:40:26,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 22:40:26,739 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 11 states have internal predecessors, (20), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) Word has length 15 [2023-11-23 22:40:26,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:40:26,741 INFO L225 Difference]: With dead ends: 21 [2023-11-23 22:40:26,741 INFO L226 Difference]: Without dead ends: 17 [2023-11-23 22:40:26,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2023-11-23 22:40:26,744 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 22 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 22:40:26,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 31 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 22:40:26,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-11-23 22:40:26,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-11-23 22:40:26,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 12 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-23 22:40:26,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2023-11-23 22:40:26,753 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 15 [2023-11-23 22:40:26,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:40:26,754 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2023-11-23 22:40:26,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 11 states have internal predecessors, (20), 5 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-23 22:40:26,755 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2023-11-23 22:40:26,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-23 22:40:26,756 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:40:26,756 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:40:26,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 22:40:26,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:40:26,982 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:40:26,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:40:26,983 INFO L85 PathProgramCache]: Analyzing trace with hash -2123675004, now seen corresponding path program 2 times [2023-11-23 22:40:26,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:40:26,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414798967] [2023-11-23 22:40:26,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:40:26,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:40:26,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:27,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:40:27,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:27,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:27,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:27,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:27,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:27,352 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 22:40:27,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:40:27,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414798967] [2023-11-23 22:40:27,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414798967] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:40:27,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3001623] [2023-11-23 22:40:27,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 22:40:27,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:40:27,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:40:27,355 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:40:27,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 22:40:27,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 22:40:27,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 22:40:27,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 22:40:27,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:40:27,489 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-23 22:40:27,493 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:40:27,893 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 22:40:27,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3001623] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:40:27,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:40:27,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 9] total 14 [2023-11-23 22:40:27,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274155388] [2023-11-23 22:40:27,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:40:27,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 22:40:27,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:40:27,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 22:40:27,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-11-23 22:40:27,899 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 14 states, 12 states have (on average 2.0) internal successors, (24), 13 states have internal predecessors, (24), 6 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 3 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-23 22:40:27,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:40:28,000 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2023-11-23 22:40:28,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 22:40:28,001 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.0) internal successors, (24), 13 states have internal predecessors, (24), 6 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 3 states have call predecessors, (8), 6 states have call successors, (8) Word has length 21 [2023-11-23 22:40:28,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:40:28,003 INFO L225 Difference]: With dead ends: 24 [2023-11-23 22:40:28,003 INFO L226 Difference]: Without dead ends: 20 [2023-11-23 22:40:28,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2023-11-23 22:40:28,008 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 23 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 22:40:28,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 34 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 22:40:28,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-11-23 22:40:28,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-11-23 22:40:28,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 14 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-23 22:40:28,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2023-11-23 22:40:28,023 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 21 [2023-11-23 22:40:28,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:40:28,024 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2023-11-23 22:40:28,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.0) internal successors, (24), 13 states have internal predecessors, (24), 6 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 3 states have call predecessors, (8), 6 states have call successors, (8) [2023-11-23 22:40:28,024 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2023-11-23 22:40:28,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-23 22:40:28,028 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:40:28,028 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:40:28,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 22:40:28,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:40:28,245 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:40:28,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:40:28,245 INFO L85 PathProgramCache]: Analyzing trace with hash 54189198, now seen corresponding path program 3 times [2023-11-23 22:40:28,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:40:28,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827653788] [2023-11-23 22:40:28,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:40:28,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:40:28,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:28,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:40:28,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:28,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:28,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:28,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:28,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:28,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:28,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:28,541 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-23 22:40:28,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:40:28,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827653788] [2023-11-23 22:40:28,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827653788] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:40:28,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341666709] [2023-11-23 22:40:28,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 22:40:28,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:40:28,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:40:28,556 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:40:28,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 22:40:28,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-23 22:40:28,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 22:40:28,613 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-23 22:40:28,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:40:28,675 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-23 22:40:28,675 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:40:29,319 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 22:40:29,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341666709] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:40:29,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:40:29,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 11] total 16 [2023-11-23 22:40:29,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520298537] [2023-11-23 22:40:29,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:40:29,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-23 22:40:29,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:40:29,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-23 22:40:29,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2023-11-23 22:40:29,327 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 16 states, 14 states have (on average 2.0) internal successors, (28), 15 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (11), 4 states have call predecessors, (11), 7 states have call successors, (11) [2023-11-23 22:40:29,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:40:29,424 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2023-11-23 22:40:29,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 22:40:29,425 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.0) internal successors, (28), 15 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (11), 4 states have call predecessors, (11), 7 states have call successors, (11) Word has length 27 [2023-11-23 22:40:29,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:40:29,427 INFO L225 Difference]: With dead ends: 27 [2023-11-23 22:40:29,427 INFO L226 Difference]: Without dead ends: 23 [2023-11-23 22:40:29,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2023-11-23 22:40:29,432 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 52 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 22:40:29,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 35 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 22:40:29,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-23 22:40:29,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-11-23 22:40:29,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 16 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-23 22:40:29,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2023-11-23 22:40:29,445 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 27 [2023-11-23 22:40:29,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:40:29,446 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2023-11-23 22:40:29,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.0) internal successors, (28), 15 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 5 states have return successors, (11), 4 states have call predecessors, (11), 7 states have call successors, (11) [2023-11-23 22:40:29,447 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2023-11-23 22:40:29,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-23 22:40:29,451 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:40:29,451 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:40:29,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 22:40:29,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:40:29,664 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:40:29,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:40:29,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1269749436, now seen corresponding path program 4 times [2023-11-23 22:40:29,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:40:29,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043361254] [2023-11-23 22:40:29,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:40:29,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:40:29,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:29,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:40:29,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:29,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:29,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:29,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:29,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:29,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:29,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:29,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:29,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:29,982 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-23 22:40:29,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:40:29,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043361254] [2023-11-23 22:40:29,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043361254] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:40:29,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277975539] [2023-11-23 22:40:29,983 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-23 22:40:29,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:40:29,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:40:29,984 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:40:29,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 22:40:30,074 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-23 22:40:30,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 22:40:30,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-23 22:40:30,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:40:30,185 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-23 22:40:30,185 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:40:31,199 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-23 22:40:31,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277975539] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:40:31,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:40:31,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 13] total 18 [2023-11-23 22:40:31,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905532931] [2023-11-23 22:40:31,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:40:31,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-23 22:40:31,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:40:31,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-23 22:40:31,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2023-11-23 22:40:31,205 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 18 states, 16 states have (on average 2.0) internal successors, (32), 17 states have internal predecessors, (32), 8 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (14), 5 states have call predecessors, (14), 8 states have call successors, (14) [2023-11-23 22:40:31,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:40:31,316 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2023-11-23 22:40:31,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 22:40:31,317 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.0) internal successors, (32), 17 states have internal predecessors, (32), 8 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (14), 5 states have call predecessors, (14), 8 states have call successors, (14) Word has length 33 [2023-11-23 22:40:31,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:40:31,319 INFO L225 Difference]: With dead ends: 30 [2023-11-23 22:40:31,319 INFO L226 Difference]: Without dead ends: 26 [2023-11-23 22:40:31,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 60 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=163, Invalid=343, Unknown=0, NotChecked=0, Total=506 [2023-11-23 22:40:31,321 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 21 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 22:40:31,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 46 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 22:40:31,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-11-23 22:40:31,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-11-23 22:40:31,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 18 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (7), 6 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 22:40:31,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2023-11-23 22:40:31,337 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 33 [2023-11-23 22:40:31,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:40:31,338 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2023-11-23 22:40:31,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.0) internal successors, (32), 17 states have internal predecessors, (32), 8 states have call successors, (8), 1 states have call predecessors, (8), 6 states have return successors, (14), 5 states have call predecessors, (14), 8 states have call successors, (14) [2023-11-23 22:40:31,340 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2023-11-23 22:40:31,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-23 22:40:31,342 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:40:31,343 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:40:31,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 22:40:31,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:40:31,559 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:40:31,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:40:31,560 INFO L85 PathProgramCache]: Analyzing trace with hash -4035634, now seen corresponding path program 5 times [2023-11-23 22:40:31,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:40:31,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948283402] [2023-11-23 22:40:31,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:40:31,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:40:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:31,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:40:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:31,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:31,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:31,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:31,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:31,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:32,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:32,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:32,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:32,078 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-23 22:40:32,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:40:32,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948283402] [2023-11-23 22:40:32,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948283402] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:40:32,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150097207] [2023-11-23 22:40:32,079 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-23 22:40:32,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:40:32,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:40:32,081 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:40:32,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 22:40:32,159 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-11-23 22:40:32,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 22:40:32,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-23 22:40:32,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:40:32,253 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 22:40:32,253 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:40:33,791 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-23 22:40:33,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150097207] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:40:33,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:40:33,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 15] total 20 [2023-11-23 22:40:33,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331856611] [2023-11-23 22:40:33,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:40:33,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-23 22:40:33,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:40:33,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-23 22:40:33,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2023-11-23 22:40:33,795 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 20 states, 18 states have (on average 2.0) internal successors, (36), 19 states have internal predecessors, (36), 9 states have call successors, (9), 1 states have call predecessors, (9), 7 states have return successors, (17), 6 states have call predecessors, (17), 9 states have call successors, (17) [2023-11-23 22:40:33,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:40:33,906 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2023-11-23 22:40:33,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 22:40:33,907 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.0) internal successors, (36), 19 states have internal predecessors, (36), 9 states have call successors, (9), 1 states have call predecessors, (9), 7 states have return successors, (17), 6 states have call predecessors, (17), 9 states have call successors, (17) Word has length 39 [2023-11-23 22:40:33,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:40:33,908 INFO L225 Difference]: With dead ends: 33 [2023-11-23 22:40:33,908 INFO L226 Difference]: Without dead ends: 29 [2023-11-23 22:40:33,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 72 SyntacticMatches, 6 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=210, Invalid=440, Unknown=0, NotChecked=0, Total=650 [2023-11-23 22:40:33,910 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 17 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 22:40:33,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 54 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 22:40:33,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-11-23 22:40:33,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-11-23 22:40:33,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 20 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (8), 7 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-23 22:40:33,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2023-11-23 22:40:33,923 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 39 [2023-11-23 22:40:33,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:40:33,924 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2023-11-23 22:40:33,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.0) internal successors, (36), 19 states have internal predecessors, (36), 9 states have call successors, (9), 1 states have call predecessors, (9), 7 states have return successors, (17), 6 states have call predecessors, (17), 9 states have call successors, (17) [2023-11-23 22:40:33,924 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2023-11-23 22:40:33,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-23 22:40:33,926 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:40:33,926 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:40:33,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 22:40:34,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-23 22:40:34,151 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:40:34,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:40:34,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1047611388, now seen corresponding path program 6 times [2023-11-23 22:40:34,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:40:34,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196335196] [2023-11-23 22:40:34,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:40:34,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:40:34,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:34,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:40:34,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:34,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:34,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:34,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:34,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:34,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:34,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:34,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:34,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:34,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:34,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:34,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:34,628 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-11-23 22:40:34,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:40:34,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196335196] [2023-11-23 22:40:34,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196335196] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:40:34,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843959286] [2023-11-23 22:40:34,629 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-23 22:40:34,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:40:34,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:40:34,632 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:40:34,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 22:40:34,723 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-11-23 22:40:34,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 22:40:34,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-23 22:40:34,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:40:34,958 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-23 22:40:34,958 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:40:36,894 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-23 22:40:36,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843959286] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:40:36,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:40:36,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17, 17] total 42 [2023-11-23 22:40:36,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693624722] [2023-11-23 22:40:36,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:40:36,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-11-23 22:40:36,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:40:36,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-11-23 22:40:36,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=1459, Unknown=0, NotChecked=0, Total=1722 [2023-11-23 22:40:36,899 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 42 states, 41 states have (on average 1.3658536585365855) internal successors, (56), 28 states have internal predecessors, (56), 3 states have call successors, (4), 1 states have call predecessors, (4), 21 states have return successors, (21), 21 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-23 22:40:37,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:40:37,521 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2023-11-23 22:40:37,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-23 22:40:37,522 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 1.3658536585365855) internal successors, (56), 28 states have internal predecessors, (56), 3 states have call successors, (4), 1 states have call predecessors, (4), 21 states have return successors, (21), 21 states have call predecessors, (21), 3 states have call successors, (21) Word has length 45 [2023-11-23 22:40:37,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:40:37,523 INFO L225 Difference]: With dead ends: 56 [2023-11-23 22:40:37,524 INFO L226 Difference]: Without dead ends: 50 [2023-11-23 22:40:37,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1109 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=740, Invalid=3952, Unknown=0, NotChecked=0, Total=4692 [2023-11-23 22:40:37,527 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 32 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 22:40:37,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 90 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 22:40:37,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-23 22:40:37,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-11-23 22:40:37,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 33 states have (on average 1.0303030303030303) internal successors, (34), 34 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 14 states have return successors, (15), 14 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-23 22:40:37,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2023-11-23 22:40:37,535 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 45 [2023-11-23 22:40:37,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:40:37,536 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2023-11-23 22:40:37,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 1.3658536585365855) internal successors, (56), 28 states have internal predecessors, (56), 3 states have call successors, (4), 1 states have call predecessors, (4), 21 states have return successors, (21), 21 states have call predecessors, (21), 3 states have call successors, (21) [2023-11-23 22:40:37,536 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2023-11-23 22:40:37,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-23 22:40:37,540 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:40:37,540 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:40:37,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 22:40:37,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-23 22:40:37,761 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:40:37,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:40:37,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1570097358, now seen corresponding path program 7 times [2023-11-23 22:40:37,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:40:37,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820419003] [2023-11-23 22:40:37,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:40:37,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:40:37,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:37,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:40:37,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:38,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:38,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:38,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:38,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:38,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:38,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:38,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:38,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:38,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:38,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:38,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:39,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:39,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:39,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:39,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:39,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:39,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:39,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:39,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:39,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:39,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:39,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:39,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:39,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:39,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:39,430 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 273 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2023-11-23 22:40:39,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:40:39,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820419003] [2023-11-23 22:40:39,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820419003] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:40:39,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253889367] [2023-11-23 22:40:39,431 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-23 22:40:39,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:40:39,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:40:39,433 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:40:39,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 22:40:39,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:39,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-23 22:40:39,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:40:39,713 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2023-11-23 22:40:39,714 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:40:53,480 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-11-23 22:40:53,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253889367] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:40:53,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:40:53,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 31] total 36 [2023-11-23 22:40:53,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338761168] [2023-11-23 22:40:53,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:40:53,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-11-23 22:40:53,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:40:53,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-11-23 22:40:53,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=339, Invalid=921, Unknown=0, NotChecked=0, Total=1260 [2023-11-23 22:40:53,485 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand has 36 states, 34 states have (on average 2.0) internal successors, (68), 35 states have internal predecessors, (68), 17 states have call successors, (17), 1 states have call predecessors, (17), 15 states have return successors, (41), 14 states have call predecessors, (41), 17 states have call successors, (41) [2023-11-23 22:40:53,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:40:53,764 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2023-11-23 22:40:53,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-23 22:40:53,765 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 2.0) internal successors, (68), 35 states have internal predecessors, (68), 17 states have call successors, (17), 1 states have call predecessors, (17), 15 states have return successors, (41), 14 states have call predecessors, (41), 17 states have call successors, (41) Word has length 87 [2023-11-23 22:40:53,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:40:53,771 INFO L225 Difference]: With dead ends: 57 [2023-11-23 22:40:53,771 INFO L226 Difference]: Without dead ends: 53 [2023-11-23 22:40:53,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 168 SyntacticMatches, 14 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 962 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=802, Invalid=1648, Unknown=0, NotChecked=0, Total=2450 [2023-11-23 22:40:53,776 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 79 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 22:40:53,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 97 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 22:40:53,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-11-23 22:40:53,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2023-11-23 22:40:53,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 36 states have internal predecessors, (36), 2 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (16), 15 states have call predecessors, (16), 2 states have call successors, (16) [2023-11-23 22:40:53,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2023-11-23 22:40:53,803 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 87 [2023-11-23 22:40:53,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:40:53,805 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2023-11-23 22:40:53,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 2.0) internal successors, (68), 35 states have internal predecessors, (68), 17 states have call successors, (17), 1 states have call predecessors, (17), 15 states have return successors, (41), 14 states have call predecessors, (41), 17 states have call successors, (41) [2023-11-23 22:40:53,806 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2023-11-23 22:40:53,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-23 22:40:53,810 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:40:53,811 INFO L195 NwaCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:40:53,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 22:40:54,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:40:54,035 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:40:54,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:40:54,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1407069436, now seen corresponding path program 8 times [2023-11-23 22:40:54,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:40:54,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694269434] [2023-11-23 22:40:54,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:40:54,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:40:54,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:54,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:40:54,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:54,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:54,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:54,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:54,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:54,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:54,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:55,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:55,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:55,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:55,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:55,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:55,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:55,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:55,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:55,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:55,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:55,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:55,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:55,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:55,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:55,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:55,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:55,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:55,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:55,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:55,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:40:55,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:55,872 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 315 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2023-11-23 22:40:55,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:40:55,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694269434] [2023-11-23 22:40:55,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694269434] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:40:55,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678859262] [2023-11-23 22:40:55,873 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 22:40:55,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:40:55,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:40:55,875 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:40:55,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 22:40:56,182 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 22:40:56,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 22:40:56,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-23 22:40:56,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:40:56,338 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2023-11-23 22:40:56,338 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:41:13,213 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 497 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-11-23 22:41:13,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678859262] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:41:13,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:41:13,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 33] total 38 [2023-11-23 22:41:13,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922288614] [2023-11-23 22:41:13,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:41:13,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-23 22:41:13,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:41:13,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-23 22:41:13,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=377, Invalid=1029, Unknown=0, NotChecked=0, Total=1406 [2023-11-23 22:41:13,220 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand has 38 states, 36 states have (on average 2.0) internal successors, (72), 37 states have internal predecessors, (72), 18 states have call successors, (18), 1 states have call predecessors, (18), 16 states have return successors, (44), 15 states have call predecessors, (44), 18 states have call successors, (44) [2023-11-23 22:41:13,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:41:13,599 INFO L93 Difference]: Finished difference Result 60 states and 61 transitions. [2023-11-23 22:41:13,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-23 22:41:13,600 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 2.0) internal successors, (72), 37 states have internal predecessors, (72), 18 states have call successors, (18), 1 states have call predecessors, (18), 16 states have return successors, (44), 15 states have call predecessors, (44), 18 states have call successors, (44) Word has length 93 [2023-11-23 22:41:13,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:41:13,609 INFO L225 Difference]: With dead ends: 60 [2023-11-23 22:41:13,609 INFO L226 Difference]: Without dead ends: 56 [2023-11-23 22:41:13,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 180 SyntacticMatches, 15 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1098 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=903, Invalid=1853, Unknown=0, NotChecked=0, Total=2756 [2023-11-23 22:41:13,615 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 147 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 22:41:13,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 96 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 22:41:13,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-23 22:41:13,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-11-23 22:41:13,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 37 states have (on average 1.027027027027027) internal successors, (38), 38 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (17), 16 states have call predecessors, (17), 2 states have call successors, (17) [2023-11-23 22:41:13,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2023-11-23 22:41:13,636 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 93 [2023-11-23 22:41:13,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:41:13,636 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2023-11-23 22:41:13,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 2.0) internal successors, (72), 37 states have internal predecessors, (72), 18 states have call successors, (18), 1 states have call predecessors, (18), 16 states have return successors, (44), 15 states have call predecessors, (44), 18 states have call successors, (44) [2023-11-23 22:41:13,637 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2023-11-23 22:41:13,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-23 22:41:13,651 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:41:13,651 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:41:13,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 22:41:13,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_747f467c-e0c0-4522-a8de-93f0c9d887c0/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:41:13,875 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 22:41:13,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:41:13,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1758730226, now seen corresponding path program 9 times [2023-11-23 22:41:13,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:41:13,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969718222] [2023-11-23 22:41:13,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:41:13,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:41:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:41:14,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 22:41:14,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:41:14,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:41:14,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:41:14,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:41:14,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:41:14,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:41:14,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:41:14,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:41:14,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:41:15,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:41:15,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:41:15,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 22:41:15,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat