./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb57480-eaa9-4b2d-8a3f-88e49ef16760/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb57480-eaa9-4b2d-8a3f-88e49ef16760/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb57480-eaa9-4b2d-8a3f-88e49ef16760/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb57480-eaa9-4b2d-8a3f-88e49ef16760/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb57480-eaa9-4b2d-8a3f-88e49ef16760/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb57480-eaa9-4b2d-8a3f-88e49ef16760/bin/uautomizer-verify-bycVGegfSx --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 3b13662719be51a1d3330a7f40f7706daa8c7b2d4044bc92f854095c09c7c129 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:19:18,480 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:19:18,555 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb57480-eaa9-4b2d-8a3f-88e49ef16760/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-21 22:19:18,562 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:19:18,562 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:19:18,601 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:19:18,602 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:19:18,602 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:19:18,603 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:19:18,604 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:19:18,605 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:19:18,606 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:19:18,607 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:19:18,607 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:19:18,608 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:19:18,609 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:19:18,609 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:19:18,610 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:19:18,611 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:19:18,611 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:19:18,612 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:19:18,613 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:19:18,614 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:19:18,614 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:19:18,615 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:19:18,615 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:19:18,616 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:19:18,617 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:19:18,617 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:19:18,618 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:19:18,619 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:19:18,619 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:19:18,620 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:19:18,620 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:19:18,621 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:19:18,621 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:19:18,622 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:19:18,637 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:19:18,637 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:19:18,638 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:19:18,638 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:19:18,639 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:19:18,639 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_9cb57480-eaa9-4b2d-8a3f-88e49ef16760/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb57480-eaa9-4b2d-8a3f-88e49ef16760/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b13662719be51a1d3330a7f40f7706daa8c7b2d4044bc92f854095c09c7c129 [2023-11-21 22:19:18,911 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:19:18,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:19:18,945 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:19:18,946 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:19:18,947 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:19:18,948 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb57480-eaa9-4b2d-8a3f-88e49ef16760/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i [2023-11-21 22:19:22,026 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:19:22,385 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:19:22,386 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb57480-eaa9-4b2d-8a3f-88e49ef16760/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i [2023-11-21 22:19:22,413 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb57480-eaa9-4b2d-8a3f-88e49ef16760/bin/uautomizer-verify-bycVGegfSx/data/55596e908/1898594efb4542a896f4dd7cc1ccaf3b/FLAGf80a236c4 [2023-11-21 22:19:22,437 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb57480-eaa9-4b2d-8a3f-88e49ef16760/bin/uautomizer-verify-bycVGegfSx/data/55596e908/1898594efb4542a896f4dd7cc1ccaf3b [2023-11-21 22:19:22,439 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:19:22,441 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:19:22,444 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:19:22,445 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:19:22,450 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:19:22,454 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:19:22" (1/1) ... [2023-11-21 22:19:22,455 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b096ef1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:19:22, skipping insertion in model container [2023-11-21 22:19:22,456 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:19:22" (1/1) ... [2023-11-21 22:19:22,513 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:19:23,025 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_9cb57480-eaa9-4b2d-8a3f-88e49ef16760/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i[33822,33835] [2023-11-21 22:19:23,074 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:19:23,091 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:19:23,134 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_9cb57480-eaa9-4b2d-8a3f-88e49ef16760/sv-benchmarks/c/heap-manipulation/bubble_sort_linux-2.i[33822,33835] [2023-11-21 22:19:23,156 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:19:23,230 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:19:23,230 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:19:23 WrapperNode [2023-11-21 22:19:23,231 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:19:23,233 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:19:23,233 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:19:23,234 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:19:23,242 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:19:23" (1/1) ... [2023-11-21 22:19:23,277 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:19:23" (1/1) ... [2023-11-21 22:19:23,324 INFO L138 Inliner]: procedures = 232, calls = 75, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 118 [2023-11-21 22:19:23,325 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:19:23,326 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:19:23,326 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:19:23,327 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:19:23,340 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:19:23" (1/1) ... [2023-11-21 22:19:23,341 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:19:23" (1/1) ... [2023-11-21 22:19:23,358 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:19:23" (1/1) ... [2023-11-21 22:19:23,419 INFO L187 HeapSplitter]: Split 37 memory accesses to 2 slices as follows [35, 2] [2023-11-21 22:19:23,421 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:19:23" (1/1) ... [2023-11-21 22:19:23,421 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:19:23" (1/1) ... [2023-11-21 22:19:23,438 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:19:23" (1/1) ... [2023-11-21 22:19:23,454 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:19:23" (1/1) ... [2023-11-21 22:19:23,464 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:19:23" (1/1) ... [2023-11-21 22:19:23,470 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:19:23" (1/1) ... [2023-11-21 22:19:23,475 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:19:23,482 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:19:23,484 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:19:23,484 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:19:23,485 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:19:23" (1/1) ... [2023-11-21 22:19:23,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:19:23,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb57480-eaa9-4b2d-8a3f-88e49ef16760/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:19:23,542 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb57480-eaa9-4b2d-8a3f-88e49ef16760/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:19:23,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb57480-eaa9-4b2d-8a3f-88e49ef16760/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:19:23,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-21 22:19:23,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-21 22:19:23,624 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2023-11-21 22:19:23,624 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2023-11-21 22:19:23,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:19:23,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-21 22:19:23,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-21 22:19:23,625 INFO L130 BoogieDeclarations]: Found specification of procedure val_from_node [2023-11-21 22:19:23,627 INFO L138 BoogieDeclarations]: Found implementation of procedure val_from_node [2023-11-21 22:19:23,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-21 22:19:23,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-21 22:19:23,627 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2023-11-21 22:19:23,627 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2023-11-21 22:19:23,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-21 22:19:23,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-21 22:19:23,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 22:19:23,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:19:23,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-21 22:19:23,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-21 22:19:23,629 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2023-11-21 22:19:23,629 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2023-11-21 22:19:23,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 22:19:23,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-21 22:19:23,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:19:23,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:19:23,819 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:19:23,822 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:19:24,260 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:19:24,356 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:19:24,358 INFO L308 CfgBuilder]: Removed 41 assume(true) statements. [2023-11-21 22:19:24,360 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:19:24 BoogieIcfgContainer [2023-11-21 22:19:24,360 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:19:24,363 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:19:24,364 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:19:24,368 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:19:24,368 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:19:22" (1/3) ... [2023-11-21 22:19:24,369 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d8d875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:19:24, skipping insertion in model container [2023-11-21 22:19:24,369 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:19:23" (2/3) ... [2023-11-21 22:19:24,371 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d8d875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:19:24, skipping insertion in model container [2023-11-21 22:19:24,371 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:19:24" (3/3) ... [2023-11-21 22:19:24,373 INFO L112 eAbstractionObserver]: Analyzing ICFG bubble_sort_linux-2.i [2023-11-21 22:19:24,399 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:19:24,399 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 22:19:24,452 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:19:24,459 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;@1423b823, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:19:24,460 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 22:19:24,465 INFO L276 IsEmpty]: Start isEmpty. Operand has 105 states, 76 states have (on average 1.8421052631578947) internal successors, (140), 95 states have internal predecessors, (140), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-11-21 22:19:24,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 22:19:24,474 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:19:24,474 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:19:24,475 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:19:24,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:19:24,481 INFO L85 PathProgramCache]: Analyzing trace with hash -754496073, now seen corresponding path program 1 times [2023-11-21 22:19:24,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:19:24,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916290091] [2023-11-21 22:19:24,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:19:24,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:19:24,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:24,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:19:24,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:19:24,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916290091] [2023-11-21 22:19:24,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916290091] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:19:24,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:19:24,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:19:24,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801279598] [2023-11-21 22:19:24,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:19:24,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-21 22:19:24,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:19:24,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-21 22:19:24,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-21 22:19:24,680 INFO L87 Difference]: Start difference. First operand has 105 states, 76 states have (on average 1.8421052631578947) internal successors, (140), 95 states have internal predecessors, (140), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:19:24,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:19:24,805 INFO L93 Difference]: Finished difference Result 206 states and 369 transitions. [2023-11-21 22:19:24,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 22:19:24,808 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-21 22:19:24,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:19:24,820 INFO L225 Difference]: With dead ends: 206 [2023-11-21 22:19:24,821 INFO L226 Difference]: Without dead ends: 97 [2023-11-21 22:19:24,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-21 22:19:24,834 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:19:24,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 114 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 22:19:24,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-11-21 22:19:24,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2023-11-21 22:19:24,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 72 states have (on average 1.2777777777777777) internal successors, (92), 87 states have internal predecessors, (92), 21 states have call successors, (21), 4 states have call predecessors, (21), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-21 22:19:24,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 118 transitions. [2023-11-21 22:19:24,917 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 118 transitions. Word has length 8 [2023-11-21 22:19:24,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:19:24,919 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 118 transitions. [2023-11-21 22:19:24,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:19:24,920 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 118 transitions. [2023-11-21 22:19:24,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-21 22:19:24,921 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:19:24,921 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:19:24,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:19:24,922 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:19:24,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:19:24,923 INFO L85 PathProgramCache]: Analyzing trace with hash -896617474, now seen corresponding path program 1 times [2023-11-21 22:19:24,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:19:24,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44122405] [2023-11-21 22:19:24,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:19:24,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:19:24,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:25,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:19:25,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:25,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:19:25,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:19:25,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44122405] [2023-11-21 22:19:25,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44122405] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:19:25,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:19:25,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 22:19:25,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010122456] [2023-11-21 22:19:25,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:19:25,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:19:25,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:19:25,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:19:25,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:19:25,421 INFO L87 Difference]: Start difference. First operand 97 states and 118 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:19:25,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:19:25,961 INFO L93 Difference]: Finished difference Result 99 states and 119 transitions. [2023-11-21 22:19:25,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:19:25,962 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-11-21 22:19:25,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:19:25,966 INFO L225 Difference]: With dead ends: 99 [2023-11-21 22:19:25,966 INFO L226 Difference]: Without dead ends: 96 [2023-11-21 22:19:25,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:19:25,973 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 233 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 22:19:25,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 76 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 22:19:25,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2023-11-21 22:19:26,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2023-11-21 22:19:26,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 72 states have (on average 1.2638888888888888) internal successors, (91), 86 states have internal predecessors, (91), 20 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-21 22:19:26,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 116 transitions. [2023-11-21 22:19:26,011 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 116 transitions. Word has length 15 [2023-11-21 22:19:26,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:19:26,013 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 116 transitions. [2023-11-21 22:19:26,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:19:26,014 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 116 transitions. [2023-11-21 22:19:26,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-21 22:19:26,016 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:19:26,016 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:19:26,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:19:26,017 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:19:26,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:19:26,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1010502954, now seen corresponding path program 1 times [2023-11-21 22:19:26,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:19:26,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741511279] [2023-11-21 22:19:26,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:19:26,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:19:26,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:26,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:19:26,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:26,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:19:26,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:19:26,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741511279] [2023-11-21 22:19:26,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741511279] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:19:26,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:19:26,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-21 22:19:26,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029052659] [2023-11-21 22:19:26,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:19:26,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-21 22:19:26,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:19:26,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-21 22:19:26,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-21 22:19:26,972 INFO L87 Difference]: Start difference. First operand 96 states and 116 transitions. Second operand has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:19:28,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:19:28,297 INFO L93 Difference]: Finished difference Result 181 states and 217 transitions. [2023-11-21 22:19:28,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-21 22:19:28,297 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2023-11-21 22:19:28,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:19:28,299 INFO L225 Difference]: With dead ends: 181 [2023-11-21 22:19:28,299 INFO L226 Difference]: Without dead ends: 175 [2023-11-21 22:19:28,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2023-11-21 22:19:28,301 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 459 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:19:28,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 121 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-21 22:19:28,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-11-21 22:19:28,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 159. [2023-11-21 22:19:28,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 131 states have (on average 1.2671755725190839) internal successors, (166), 145 states have internal predecessors, (166), 23 states have call successors, (23), 6 states have call predecessors, (23), 4 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-21 22:19:28,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 196 transitions. [2023-11-21 22:19:28,343 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 196 transitions. Word has length 18 [2023-11-21 22:19:28,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:19:28,344 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 196 transitions. [2023-11-21 22:19:28,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:19:28,344 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 196 transitions. [2023-11-21 22:19:28,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-21 22:19:28,345 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:19:28,345 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:19:28,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:19:28,346 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:19:28,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:19:28,347 INFO L85 PathProgramCache]: Analyzing trace with hash -734298133, now seen corresponding path program 1 times [2023-11-21 22:19:28,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:19:28,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202487898] [2023-11-21 22:19:28,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:19:28,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:19:28,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:29,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:19:29,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:29,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:19:29,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:19:29,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202487898] [2023-11-21 22:19:29,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202487898] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:19:29,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:19:29,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-21 22:19:29,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138153674] [2023-11-21 22:19:29,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:19:29,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-21 22:19:29,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:19:29,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-21 22:19:29,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-21 22:19:29,377 INFO L87 Difference]: Start difference. First operand 159 states and 196 transitions. Second operand has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:19:30,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:19:30,482 INFO L93 Difference]: Finished difference Result 253 states and 308 transitions. [2023-11-21 22:19:30,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-21 22:19:30,483 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2023-11-21 22:19:30,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:19:30,485 INFO L225 Difference]: With dead ends: 253 [2023-11-21 22:19:30,485 INFO L226 Difference]: Without dead ends: 250 [2023-11-21 22:19:30,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2023-11-21 22:19:30,487 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 296 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-21 22:19:30,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 144 Invalid, 957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-21 22:19:30,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2023-11-21 22:19:30,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 234. [2023-11-21 22:19:30,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 199 states have (on average 1.2613065326633166) internal successors, (251), 214 states have internal predecessors, (251), 28 states have call successors, (28), 8 states have call predecessors, (28), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-21 22:19:30,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 290 transitions. [2023-11-21 22:19:30,551 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 290 transitions. Word has length 21 [2023-11-21 22:19:30,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:19:30,552 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 290 transitions. [2023-11-21 22:19:30,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:19:30,552 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 290 transitions. [2023-11-21 22:19:30,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-21 22:19:30,553 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:19:30,553 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:19:30,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 22:19:30,554 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:19:30,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:19:30,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1459497818, now seen corresponding path program 1 times [2023-11-21 22:19:30,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:19:30,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698176482] [2023-11-21 22:19:30,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:19:30,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:19:30,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:31,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:19:31,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:31,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:19:31,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:19:31,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698176482] [2023-11-21 22:19:31,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698176482] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:19:31,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:19:31,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-21 22:19:31,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122264989] [2023-11-21 22:19:31,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:19:31,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-21 22:19:31,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:19:31,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-21 22:19:31,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-21 22:19:31,374 INFO L87 Difference]: Start difference. First operand 234 states and 290 transitions. Second operand has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:19:32,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:19:32,540 INFO L93 Difference]: Finished difference Result 254 states and 309 transitions. [2023-11-21 22:19:32,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-21 22:19:32,543 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2023-11-21 22:19:32,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:19:32,546 INFO L225 Difference]: With dead ends: 254 [2023-11-21 22:19:32,547 INFO L226 Difference]: Without dead ends: 251 [2023-11-21 22:19:32,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2023-11-21 22:19:32,549 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 336 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-21 22:19:32,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 144 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-21 22:19:32,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2023-11-21 22:19:32,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 234. [2023-11-21 22:19:32,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 199 states have (on average 1.256281407035176) internal successors, (250), 214 states have internal predecessors, (250), 28 states have call successors, (28), 8 states have call predecessors, (28), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-21 22:19:32,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 289 transitions. [2023-11-21 22:19:32,601 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 289 transitions. Word has length 24 [2023-11-21 22:19:32,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:19:32,601 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 289 transitions. [2023-11-21 22:19:32,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:19:32,602 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 289 transitions. [2023-11-21 22:19:32,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-21 22:19:32,603 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:19:32,603 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:19:32,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 22:19:32,604 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:19:32,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:19:32,604 INFO L85 PathProgramCache]: Analyzing trace with hash 2112541078, now seen corresponding path program 1 times [2023-11-21 22:19:32,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:19:32,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131463518] [2023-11-21 22:19:32,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:19:32,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:19:32,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:33,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:19:33,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:33,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:19:33,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:19:33,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131463518] [2023-11-21 22:19:33,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131463518] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:19:33,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:19:33,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-21 22:19:33,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403534088] [2023-11-21 22:19:33,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:19:33,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-21 22:19:33,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:19:33,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-21 22:19:33,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-11-21 22:19:33,701 INFO L87 Difference]: Start difference. First operand 234 states and 289 transitions. Second operand has 12 states, 10 states have (on average 2.3) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:19:35,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:19:35,120 INFO L93 Difference]: Finished difference Result 251 states and 304 transitions. [2023-11-21 22:19:35,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-21 22:19:35,121 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2023-11-21 22:19:35,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:19:35,123 INFO L225 Difference]: With dead ends: 251 [2023-11-21 22:19:35,123 INFO L226 Difference]: Without dead ends: 248 [2023-11-21 22:19:35,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2023-11-21 22:19:35,125 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 329 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 1069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:19:35,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 161 Invalid, 1069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-21 22:19:35,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2023-11-21 22:19:35,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 234. [2023-11-21 22:19:35,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 199 states have (on average 1.2512562814070352) internal successors, (249), 214 states have internal predecessors, (249), 28 states have call successors, (28), 8 states have call predecessors, (28), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-21 22:19:35,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 288 transitions. [2023-11-21 22:19:35,182 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 288 transitions. Word has length 27 [2023-11-21 22:19:35,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:19:35,183 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 288 transitions. [2023-11-21 22:19:35,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:19:35,183 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 288 transitions. [2023-11-21 22:19:35,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-21 22:19:35,185 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:19:35,185 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:19:35,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 22:19:35,185 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 22:19:35,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:19:35,186 INFO L85 PathProgramCache]: Analyzing trace with hash -849953334, now seen corresponding path program 1 times [2023-11-21 22:19:35,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:19:35,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620599612] [2023-11-21 22:19:35,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:19:35,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:19:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:36,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 22:19:36,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:36,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 22:19:36,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:36,766 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:19:36,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:19:36,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620599612] [2023-11-21 22:19:36,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620599612] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:19:36,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682357380] [2023-11-21 22:19:36,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:19:36,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:19:36,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb57480-eaa9-4b2d-8a3f-88e49ef16760/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:19:36,771 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb57480-eaa9-4b2d-8a3f-88e49ef16760/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:19:36,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9cb57480-eaa9-4b2d-8a3f-88e49ef16760/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 22:19:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:19:37,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 71 conjunts are in the unsatisfiable core [2023-11-21 22:19:37,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:19:37,130 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-21 22:19:37,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-11-21 22:19:37,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-21 22:19:37,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-21 22:19:37,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2023-11-21 22:19:37,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 43 [2023-11-21 22:19:37,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:19:37,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 14 [2023-11-21 22:19:37,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2023-11-21 22:19:37,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:19:37,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 26 [2023-11-21 22:19:37,792 INFO L349 Elim1Store]: treesize reduction 24, result has 41.5 percent of original size [2023-11-21 22:19:37,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 25 treesize of output 29 [2023-11-21 22:19:37,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2023-11-21 22:19:37,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2023-11-21 22:19:37,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 39 [2023-11-21 22:19:37,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 32 [2023-11-21 22:19:37,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 45 [2023-11-21 22:19:42,329 INFO L349 Elim1Store]: treesize reduction 79, result has 6.0 percent of original size [2023-11-21 22:19:42,329 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 80 treesize of output 77 [2023-11-21 22:19:42,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 13 [2023-11-21 22:19:42,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:19:42,352 INFO L349 Elim1Store]: treesize reduction 51, result has 1.9 percent of original size [2023-11-21 22:19:42,352 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 44 [2023-11-21 22:19:42,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 19 [2023-11-21 22:19:42,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-21 22:19:42,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 18 [2023-11-21 22:19:42,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-11-21 22:19:42,680 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:19:42,680 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:19:42,765 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_510 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_gl_insert_~node~1#1.base| v_ArrVal_510) |c_~#gl_list~0.base|) (+ |c_~#gl_list~0.offset| 4)) |c_~#gl_list~0.base|))) is different from false [2023-11-21 22:19:42,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 49 [2023-11-21 22:19:42,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682357380] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:19:42,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:19:42,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 25 [2023-11-21 22:19:42,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359349449] [2023-11-21 22:19:42,987 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:19:42,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-21 22:19:42,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:19:42,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-21 22:19:42,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=658, Unknown=4, NotChecked=52, Total=812 [2023-11-21 22:19:42,989 INFO L87 Difference]: Start difference. First operand 234 states and 288 transitions. Second operand has 26 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 16 states have internal predecessors, (39), 5 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-21 22:19:56,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 22:19:58,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 22:20:00,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 22:20:06,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 22:20:08,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 22:20:10,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-21 22:20:12,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]