./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/sorting_bubblesort_ground-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 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_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-examples/sorting_bubblesort_ground-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX --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 68585835b92043bfb2f3c62590e96ff685993869f8a251aecd9fe4c8aaea0e1e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 16:20:26,949 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:20:27,023 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 16:20:27,028 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:20:27,029 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:20:27,054 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:20:27,055 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:20:27,056 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:20:27,056 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:20:27,057 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:20:27,057 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:20:27,058 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:20:27,059 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:20:27,059 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:20:27,060 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:20:27,060 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:20:27,061 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 16:20:27,061 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 16:20:27,062 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:20:27,062 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 16:20:27,063 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:20:27,063 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 16:20:27,064 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:20:27,064 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 16:20:27,064 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:20:27,065 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 16:20:27,065 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 16:20:27,065 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:20:27,066 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:20:27,074 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:20:27,075 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:20:27,075 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:20:27,076 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:20:27,076 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:20:27,077 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:20:27,081 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 16:20:27,082 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:20:27,082 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 16:20:27,082 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:20:27,083 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:20:27,083 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:20:27,085 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:20:27,085 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_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68585835b92043bfb2f3c62590e96ff685993869f8a251aecd9fe4c8aaea0e1e [2024-11-08 16:20:27,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:20:27,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:20:27,476 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:20:27,478 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:20:27,478 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:20:27,480 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/array-examples/sorting_bubblesort_ground-1.i Unable to find full path for "g++" [2024-11-08 16:20:29,541 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:20:29,787 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:20:29,787 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/sv-benchmarks/c/array-examples/sorting_bubblesort_ground-1.i [2024-11-08 16:20:29,795 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/data/5e04061ad/c4731d7593e6457fa2001d9d98bf2542/FLAGb053542f5 [2024-11-08 16:20:30,101 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/data/5e04061ad/c4731d7593e6457fa2001d9d98bf2542 [2024-11-08 16:20:30,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:20:30,106 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:20:30,108 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:20:30,108 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:20:30,118 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:20:30,119 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:20:30" (1/1) ... [2024-11-08 16:20:30,120 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29a27ed8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:20:30, skipping insertion in model container [2024-11-08 16:20:30,120 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:20:30" (1/1) ... [2024-11-08 16:20:30,150 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:20:30,344 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/sv-benchmarks/c/array-examples/sorting_bubblesort_ground-1.i[820,833] [2024-11-08 16:20:30,371 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:20:30,382 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:20:30,398 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/sv-benchmarks/c/array-examples/sorting_bubblesort_ground-1.i[820,833] [2024-11-08 16:20:30,409 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:20:30,430 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:20:30,431 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:20:30 WrapperNode [2024-11-08 16:20:30,431 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:20:30,432 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:20:30,432 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:20:30,433 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:20:30,441 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:20:30" (1/1) ... [2024-11-08 16:20:30,448 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:20:30" (1/1) ... [2024-11-08 16:20:30,470 INFO L138 Inliner]: procedures = 16, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 80 [2024-11-08 16:20:30,471 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:20:30,471 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:20:30,471 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:20:30,472 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:20:30,485 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:20:30" (1/1) ... [2024-11-08 16:20:30,486 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:20:30" (1/1) ... [2024-11-08 16:20:30,488 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:20:30" (1/1) ... [2024-11-08 16:20:30,504 INFO L175 MemorySlicer]: Split 11 memory accesses to 2 slices as follows [2, 9]. 82 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-08 16:20:30,504 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:20:30" (1/1) ... [2024-11-08 16:20:30,505 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:20:30" (1/1) ... [2024-11-08 16:20:30,511 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:20:30" (1/1) ... [2024-11-08 16:20:30,517 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:20:30" (1/1) ... [2024-11-08 16:20:30,518 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:20:30" (1/1) ... [2024-11-08 16:20:30,519 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:20:30" (1/1) ... [2024-11-08 16:20:30,522 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:20:30,523 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:20:30,524 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:20:30,524 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:20:30,525 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:20:30" (1/1) ... [2024-11-08 16:20:30,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:20:30,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:20:30,562 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 16:20:30,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 16:20:30,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:20:30,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 16:20:30,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 16:20:30,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 16:20:30,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 16:20:30,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 16:20:30,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:20:30,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:20:30,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 16:20:30,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 16:20:30,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 16:20:30,692 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:20:30,695 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:20:30,894 INFO L? ?]: Removed 17 outVars from TransFormulas that were not future-live. [2024-11-08 16:20:30,894 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:20:30,909 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:20:30,909 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 16:20:30,909 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:20:30 BoogieIcfgContainer [2024-11-08 16:20:30,910 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:20:30,912 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:20:30,913 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:20:30,917 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:20:30,917 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:20:30" (1/3) ... [2024-11-08 16:20:30,918 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2600ec66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:20:30, skipping insertion in model container [2024-11-08 16:20:30,918 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:20:30" (2/3) ... [2024-11-08 16:20:30,919 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2600ec66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:20:30, skipping insertion in model container [2024-11-08 16:20:30,919 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:20:30" (3/3) ... [2024-11-08 16:20:30,920 INFO L112 eAbstractionObserver]: Analyzing ICFG sorting_bubblesort_ground-1.i [2024-11-08 16:20:30,957 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:20:30,957 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 16:20:31,034 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:20:31,050 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2a958365, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:20:31,050 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 16:20:31,060 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:20:31,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-08 16:20:31,070 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:20:31,071 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:20:31,072 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:20:31,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:20:31,081 INFO L85 PathProgramCache]: Analyzing trace with hash 564580083, now seen corresponding path program 1 times [2024-11-08 16:20:31,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:20:31,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426260367] [2024-11-08 16:20:31,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:20:31,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:20:31,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:20:31,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:20:31,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:20:31,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426260367] [2024-11-08 16:20:31,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426260367] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:20:31,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:20:31,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:20:31,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891882589] [2024-11-08 16:20:31,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:20:31,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:20:31,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:20:31,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:20:31,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:20:31,457 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 25 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:20:31,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:20:31,501 INFO L93 Difference]: Finished difference Result 50 states and 72 transitions. [2024-11-08 16:20:31,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:20:31,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-08 16:20:31,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:20:31,512 INFO L225 Difference]: With dead ends: 50 [2024-11-08 16:20:31,512 INFO L226 Difference]: Without dead ends: 24 [2024-11-08 16:20:31,514 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 16:20:31,518 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 1 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:20:31,519 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 63 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:20:31,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-08 16:20:31,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-08 16:20:31,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.434782608695652) internal successors, (33), 23 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:20:31,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 33 transitions. [2024-11-08 16:20:31,559 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 33 transitions. Word has length 12 [2024-11-08 16:20:31,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:20:31,559 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 33 transitions. [2024-11-08 16:20:31,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:20:31,560 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 33 transitions. [2024-11-08 16:20:31,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-08 16:20:31,561 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:20:31,561 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:20:31,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 16:20:31,562 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:20:31,562 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:20:31,563 INFO L85 PathProgramCache]: Analyzing trace with hash -734435144, now seen corresponding path program 1 times [2024-11-08 16:20:31,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:20:31,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518046894] [2024-11-08 16:20:31,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:20:31,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:20:31,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:20:31,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:20:31,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:20:31,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518046894] [2024-11-08 16:20:31,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518046894] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:20:31,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916529298] [2024-11-08 16:20:31,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:20:31,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:20:31,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:20:31,700 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:20:31,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 16:20:31,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:20:31,823 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 16:20:31,828 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:20:31,861 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:20:31,862 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:20:31,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916529298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:20:31,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:20:31,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-08 16:20:31,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823118710] [2024-11-08 16:20:31,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:20:31,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:20:31,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:20:31,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:20:31,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:20:31,872 INFO L87 Difference]: Start difference. First operand 24 states and 33 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:20:31,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:20:31,909 INFO L93 Difference]: Finished difference Result 41 states and 57 transitions. [2024-11-08 16:20:31,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:20:31,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-08 16:20:31,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:20:31,912 INFO L225 Difference]: With dead ends: 41 [2024-11-08 16:20:31,912 INFO L226 Difference]: Without dead ends: 31 [2024-11-08 16:20:31,913 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:20:31,915 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 8 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:20:31,918 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 60 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:20:31,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-08 16:20:31,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-11-08 16:20:31,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 30 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:20:31,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 43 transitions. [2024-11-08 16:20:31,930 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 43 transitions. Word has length 14 [2024-11-08 16:20:31,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:20:31,931 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 43 transitions. [2024-11-08 16:20:31,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:20:31,932 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 43 transitions. [2024-11-08 16:20:31,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-08 16:20:31,934 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:20:31,935 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:20:31,952 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 16:20:32,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:20:32,136 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:20:32,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:20:32,137 INFO L85 PathProgramCache]: Analyzing trace with hash 265572127, now seen corresponding path program 1 times [2024-11-08 16:20:32,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:20:32,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976355943] [2024-11-08 16:20:32,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:20:32,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:20:32,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:20:32,241 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:20:32,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:20:32,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976355943] [2024-11-08 16:20:32,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976355943] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:20:32,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896294376] [2024-11-08 16:20:32,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:20:32,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:20:32,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:20:32,245 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:20:32,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 16:20:32,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:20:32,319 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 16:20:32,321 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:20:32,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-08 16:20:32,339 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 16:20:32,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896294376] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:20:32,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 16:20:32,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-08 16:20:32,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139124164] [2024-11-08 16:20:32,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:20:32,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 16:20:32,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:20:32,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 16:20:32,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:20:32,344 INFO L87 Difference]: Start difference. First operand 31 states and 43 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:20:32,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:20:32,387 INFO L93 Difference]: Finished difference Result 60 states and 85 transitions. [2024-11-08 16:20:32,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 16:20:32,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-08 16:20:32,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:20:32,389 INFO L225 Difference]: With dead ends: 60 [2024-11-08 16:20:32,389 INFO L226 Difference]: Without dead ends: 36 [2024-11-08 16:20:32,390 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:20:32,391 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 4 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:20:32,392 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 49 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:20:32,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-08 16:20:32,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2024-11-08 16:20:32,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.40625) internal successors, (45), 32 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:20:32,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 45 transitions. [2024-11-08 16:20:32,403 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 45 transitions. Word has length 18 [2024-11-08 16:20:32,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:20:32,403 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 45 transitions. [2024-11-08 16:20:32,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:20:32,403 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 45 transitions. [2024-11-08 16:20:32,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-08 16:20:32,404 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:20:32,404 INFO L215 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] [2024-11-08 16:20:32,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 16:20:32,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-08 16:20:32,609 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:20:32,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:20:32,609 INFO L85 PathProgramCache]: Analyzing trace with hash -470823450, now seen corresponding path program 1 times [2024-11-08 16:20:32,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:20:32,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175775788] [2024-11-08 16:20:32,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:20:32,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:20:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:20:32,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 16:20:32,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:20:32,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175775788] [2024-11-08 16:20:32,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175775788] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:20:32,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528550892] [2024-11-08 16:20:32,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:20:32,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:20:32,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:20:32,761 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:20:32,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 16:20:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:20:32,843 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 16:20:32,845 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:20:32,884 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 16:20:32,884 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:20:32,917 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 16:20:32,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528550892] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:20:32,917 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:20:32,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-08 16:20:32,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106678603] [2024-11-08 16:20:32,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:20:32,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 16:20:32,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:20:32,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 16:20:32,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:20:32,920 INFO L87 Difference]: Start difference. First operand 33 states and 45 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:20:32,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:20:32,959 INFO L93 Difference]: Finished difference Result 65 states and 92 transitions. [2024-11-08 16:20:32,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:20:32,959 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-08 16:20:32,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:20:32,960 INFO L225 Difference]: With dead ends: 65 [2024-11-08 16:20:32,960 INFO L226 Difference]: Without dead ends: 38 [2024-11-08 16:20:32,961 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-08 16:20:32,962 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 16:20:32,962 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 78 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 16:20:32,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-08 16:20:32,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-08 16:20:32,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 37 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:20:32,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2024-11-08 16:20:32,968 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 49 transitions. Word has length 22 [2024-11-08 16:20:32,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:20:32,969 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 49 transitions. [2024-11-08 16:20:32,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:20:32,969 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 49 transitions. [2024-11-08 16:20:32,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-08 16:20:32,970 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:20:32,970 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:20:32,991 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 16:20:33,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:20:33,171 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:20:33,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:20:33,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1618383691, now seen corresponding path program 2 times [2024-11-08 16:20:33,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:20:33,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022432146] [2024-11-08 16:20:33,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:20:33,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:20:33,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:20:33,271 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 16:20:33,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:20:33,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022432146] [2024-11-08 16:20:33,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022432146] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:20:33,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234643355] [2024-11-08 16:20:33,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:20:33,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:20:33,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:20:33,274 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:20:33,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 16:20:33,374 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 16:20:33,374 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:20:33,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 16:20:33,379 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:20:33,485 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 16:20:33,486 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:20:33,599 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 16:20:33,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234643355] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:20:33,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:20:33,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-08 16:20:33,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232771535] [2024-11-08 16:20:33,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:20:33,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-08 16:20:33,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:20:33,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-08 16:20:33,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-08 16:20:33,605 INFO L87 Difference]: Start difference. First operand 38 states and 49 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:20:33,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:20:33,745 INFO L93 Difference]: Finished difference Result 88 states and 122 transitions. [2024-11-08 16:20:33,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 16:20:33,748 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2024-11-08 16:20:33,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:20:33,749 INFO L225 Difference]: With dead ends: 88 [2024-11-08 16:20:33,749 INFO L226 Difference]: Without dead ends: 61 [2024-11-08 16:20:33,750 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-08 16:20:33,751 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 8 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:20:33,753 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 128 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:20:33,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-08 16:20:33,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 57. [2024-11-08 16:20:33,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.2321428571428572) internal successors, (69), 56 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:20:33,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 69 transitions. [2024-11-08 16:20:33,764 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 69 transitions. Word has length 28 [2024-11-08 16:20:33,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:20:33,764 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 69 transitions. [2024-11-08 16:20:33,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:20:33,768 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 69 transitions. [2024-11-08 16:20:33,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-08 16:20:33,770 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:20:33,770 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:20:33,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 16:20:33,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:20:33,971 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:20:33,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:20:33,971 INFO L85 PathProgramCache]: Analyzing trace with hash 127990106, now seen corresponding path program 3 times [2024-11-08 16:20:33,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:20:33,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748373900] [2024-11-08 16:20:33,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:20:33,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:20:34,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:20:34,299 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-08 16:20:34,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:20:34,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748373900] [2024-11-08 16:20:34,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748373900] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:20:34,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814849133] [2024-11-08 16:20:34,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 16:20:34,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:20:34,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:20:34,304 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:20:34,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 16:20:34,401 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-08 16:20:34,401 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:20:34,402 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 16:20:34,404 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:20:34,445 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-08 16:20:34,446 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:20:34,498 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-08 16:20:34,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814849133] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:20:34,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:20:34,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-08 16:20:34,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620493854] [2024-11-08 16:20:34,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:20:34,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 16:20:34,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:20:34,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 16:20:34,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-08 16:20:34,501 INFO L87 Difference]: Start difference. First operand 57 states and 69 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:20:34,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:20:34,586 INFO L93 Difference]: Finished difference Result 120 states and 165 transitions. [2024-11-08 16:20:34,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 16:20:34,591 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2024-11-08 16:20:34,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:20:34,592 INFO L225 Difference]: With dead ends: 120 [2024-11-08 16:20:34,592 INFO L226 Difference]: Without dead ends: 87 [2024-11-08 16:20:34,592 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-08 16:20:34,593 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 19 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:20:34,593 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 90 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:20:34,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-08 16:20:34,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2024-11-08 16:20:34,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.2209302325581395) internal successors, (105), 86 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:20:34,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 105 transitions. [2024-11-08 16:20:34,616 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 105 transitions. Word has length 44 [2024-11-08 16:20:34,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:20:34,616 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 105 transitions. [2024-11-08 16:20:34,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:20:34,616 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 105 transitions. [2024-11-08 16:20:34,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-08 16:20:34,618 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:20:34,618 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:20:34,643 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 16:20:34,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-08 16:20:34,819 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:20:34,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:20:34,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1393015158, now seen corresponding path program 4 times [2024-11-08 16:20:34,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:20:34,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329580870] [2024-11-08 16:20:34,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:20:34,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:20:34,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:20:35,293 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-08 16:20:35,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:20:35,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329580870] [2024-11-08 16:20:35,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329580870] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:20:35,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536685344] [2024-11-08 16:20:35,294 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 16:20:35,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:20:35,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:20:35,299 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:20:35,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 16:20:35,433 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 16:20:35,433 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:20:35,437 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 16:20:35,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:20:35,631 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 1 proven. 66 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-08 16:20:35,632 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:20:35,867 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 1 proven. 66 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-08 16:20:35,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536685344] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:20:35,868 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:20:35,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 27 [2024-11-08 16:20:35,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433689897] [2024-11-08 16:20:35,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:20:35,870 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-08 16:20:35,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:20:35,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-08 16:20:35,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2024-11-08 16:20:35,874 INFO L87 Difference]: Start difference. First operand 87 states and 105 transitions. Second operand has 27 states, 27 states have (on average 3.6296296296296298) internal successors, (98), 27 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:20:36,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:20:36,097 INFO L93 Difference]: Finished difference Result 218 states and 286 transitions. [2024-11-08 16:20:36,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-08 16:20:36,098 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.6296296296296298) internal successors, (98), 27 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-08 16:20:36,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:20:36,099 INFO L225 Difference]: With dead ends: 218 [2024-11-08 16:20:36,099 INFO L226 Difference]: Without dead ends: 154 [2024-11-08 16:20:36,100 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2024-11-08 16:20:36,101 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 46 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 16:20:36,106 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 112 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 16:20:36,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-11-08 16:20:36,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 153. [2024-11-08 16:20:36,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.230263157894737) internal successors, (187), 152 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:20:36,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 187 transitions. [2024-11-08 16:20:36,127 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 187 transitions. Word has length 60 [2024-11-08 16:20:36,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:20:36,127 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 187 transitions. [2024-11-08 16:20:36,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.6296296296296298) internal successors, (98), 27 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:20:36,128 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 187 transitions. [2024-11-08 16:20:36,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-08 16:20:36,130 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:20:36,130 INFO L215 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:20:36,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-08 16:20:36,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:20:36,335 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:20:36,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:20:36,335 INFO L85 PathProgramCache]: Analyzing trace with hash 265935219, now seen corresponding path program 5 times [2024-11-08 16:20:36,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:20:36,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003861896] [2024-11-08 16:20:36,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:20:36,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:20:36,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:20:36,739 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2024-11-08 16:20:36,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:20:36,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003861896] [2024-11-08 16:20:36,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003861896] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:20:36,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267795015] [2024-11-08 16:20:36,740 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 16:20:36,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:20:36,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:20:36,743 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:20:36,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 16:20:37,113 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2024-11-08 16:20:37,114 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:20:37,117 INFO L255 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 16:20:37,121 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:20:37,565 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 1 proven. 378 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-08 16:20:37,566 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:20:38,270 INFO L134 CoverageAnalysis]: Checked inductivity of 500 backedges. 1 proven. 378 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2024-11-08 16:20:38,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267795015] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:20:38,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:20:38,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 17] total 44 [2024-11-08 16:20:38,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241091658] [2024-11-08 16:20:38,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:20:38,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-08 16:20:38,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:20:38,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-08 16:20:38,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=586, Invalid=1306, Unknown=0, NotChecked=0, Total=1892 [2024-11-08 16:20:38,275 INFO L87 Difference]: Start difference. First operand 153 states and 187 transitions. Second operand has 44 states, 44 states have (on average 3.727272727272727) internal successors, (164), 44 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:20:38,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:20:38,680 INFO L93 Difference]: Finished difference Result 412 states and 544 transitions. [2024-11-08 16:20:38,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-08 16:20:38,681 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.727272727272727) internal successors, (164), 44 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-11-08 16:20:38,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:20:38,682 INFO L225 Difference]: With dead ends: 412 [2024-11-08 16:20:38,683 INFO L226 Difference]: Without dead ends: 284 [2024-11-08 16:20:38,687 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=586, Invalid=1306, Unknown=0, NotChecked=0, Total=1892 [2024-11-08 16:20:38,688 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 100 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 16:20:38,688 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 220 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 16:20:38,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2024-11-08 16:20:38,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 283. [2024-11-08 16:20:38,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 282 states have (on average 1.2375886524822695) internal successors, (349), 282 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:20:38,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 349 transitions. [2024-11-08 16:20:38,714 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 349 transitions. Word has length 94 [2024-11-08 16:20:38,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:20:38,714 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 349 transitions. [2024-11-08 16:20:38,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.727272727272727) internal successors, (164), 44 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:20:38,715 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 349 transitions. [2024-11-08 16:20:38,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-08 16:20:38,717 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:20:38,718 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:20:38,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-08 16:20:38,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:20:38,922 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:20:38,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:20:38,922 INFO L85 PathProgramCache]: Analyzing trace with hash -670071704, now seen corresponding path program 6 times [2024-11-08 16:20:38,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:20:38,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405452056] [2024-11-08 16:20:38,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:20:38,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:20:38,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:20:39,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1915 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 1771 trivial. 0 not checked. [2024-11-08 16:20:39,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:20:39,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405452056] [2024-11-08 16:20:39,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405452056] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:20:39,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740907791] [2024-11-08 16:20:39,517 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 16:20:39,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:20:39,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:20:39,520 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:20:39,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 16:20:39,666 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2024-11-08 16:20:39,666 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:20:39,668 INFO L255 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-08 16:20:39,673 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:20:40,801 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 16:20:40,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-11-08 16:20:40,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1915 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 1826 trivial. 0 not checked. [2024-11-08 16:20:40,834 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:20:41,405 INFO L349 Elim1Store]: treesize reduction 13, result has 60.6 percent of original size [2024-11-08 16:20:41,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 28 [2024-11-08 16:20:41,494 INFO L134 CoverageAnalysis]: Checked inductivity of 1915 backedges. 30 proven. 59 refuted. 0 times theorem prover too weak. 1826 trivial. 0 not checked. [2024-11-08 16:20:41,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740907791] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:20:41,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:20:41,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 8] total 29 [2024-11-08 16:20:41,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277971648] [2024-11-08 16:20:41,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:20:41,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-08 16:20:41,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:20:41,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-08 16:20:41,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2024-11-08 16:20:41,501 INFO L87 Difference]: Start difference. First operand 283 states and 349 transitions. Second operand has 29 states, 29 states have (on average 3.103448275862069) internal successors, (90), 29 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:20:42,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:20:42,318 INFO L93 Difference]: Finished difference Result 558 states and 696 transitions. [2024-11-08 16:20:42,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-08 16:20:42,319 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.103448275862069) internal successors, (90), 29 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2024-11-08 16:20:42,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:20:42,321 INFO L225 Difference]: With dead ends: 558 [2024-11-08 16:20:42,321 INFO L226 Difference]: Without dead ends: 302 [2024-11-08 16:20:42,323 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=407, Invalid=1755, Unknown=0, NotChecked=0, Total=2162 [2024-11-08 16:20:42,324 INFO L432 NwaCegarLoop]: 21 mSDtfsCounter, 103 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 16:20:42,325 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 236 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 16:20:42,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2024-11-08 16:20:42,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 290. [2024-11-08 16:20:42,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 1.231833910034602) internal successors, (356), 289 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:20:42,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 356 transitions. [2024-11-08 16:20:42,381 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 356 transitions. Word has length 160 [2024-11-08 16:20:42,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:20:42,382 INFO L471 AbstractCegarLoop]: Abstraction has 290 states and 356 transitions. [2024-11-08 16:20:42,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.103448275862069) internal successors, (90), 29 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:20:42,383 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 356 transitions. [2024-11-08 16:20:42,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-08 16:20:42,389 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:20:42,389 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 13, 13, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:20:42,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-08 16:20:42,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:20:42,594 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:20:42,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:20:42,595 INFO L85 PathProgramCache]: Analyzing trace with hash 2036598484, now seen corresponding path program 1 times [2024-11-08 16:20:42,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:20:42,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070943528] [2024-11-08 16:20:42,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:20:42,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:20:42,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:20:43,405 INFO L134 CoverageAnalysis]: Checked inductivity of 1943 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 1774 trivial. 0 not checked. [2024-11-08 16:20:43,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:20:43,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070943528] [2024-11-08 16:20:43,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070943528] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:20:43,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226905907] [2024-11-08 16:20:43,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:20:43,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:20:43,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:20:43,408 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:20:43,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 16:20:43,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:20:43,608 INFO L255 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-08 16:20:43,612 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:20:43,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1943 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 1774 trivial. 0 not checked. [2024-11-08 16:20:43,691 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:20:44,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1943 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 1774 trivial. 0 not checked. [2024-11-08 16:20:44,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226905907] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:20:44,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:20:44,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2024-11-08 16:20:44,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184616425] [2024-11-08 16:20:44,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:20:44,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-08 16:20:44,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:20:44,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-08 16:20:44,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2024-11-08 16:20:44,125 INFO L87 Difference]: Start difference. First operand 290 states and 356 transitions. Second operand has 31 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 31 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:20:44,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:20:44,253 INFO L93 Difference]: Finished difference Result 581 states and 727 transitions. [2024-11-08 16:20:44,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-08 16:20:44,253 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 31 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2024-11-08 16:20:44,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:20:44,255 INFO L225 Difference]: With dead ends: 581 [2024-11-08 16:20:44,255 INFO L226 Difference]: Without dead ends: 320 [2024-11-08 16:20:44,256 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2024-11-08 16:20:44,257 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 2 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 16:20:44,258 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 147 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 16:20:44,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-11-08 16:20:44,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2024-11-08 16:20:44,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 319 states have (on average 1.2100313479623825) internal successors, (386), 319 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:20:44,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 386 transitions. [2024-11-08 16:20:44,274 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 386 transitions. Word has length 166 [2024-11-08 16:20:44,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:20:44,275 INFO L471 AbstractCegarLoop]: Abstraction has 320 states and 386 transitions. [2024-11-08 16:20:44,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.5483870967741935) internal successors, (79), 31 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:20:44,275 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 386 transitions. [2024-11-08 16:20:44,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-08 16:20:44,278 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:20:44,279 INFO L215 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 28, 28, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:20:44,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-08 16:20:44,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:20:44,479 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:20:44,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:20:44,480 INFO L85 PathProgramCache]: Analyzing trace with hash -214404513, now seen corresponding path program 2 times [2024-11-08 16:20:44,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:20:44,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008177225] [2024-11-08 16:20:44,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:20:44,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:20:44,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:20:45,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2558 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 1774 trivial. 0 not checked. [2024-11-08 16:20:45,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:20:45,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008177225] [2024-11-08 16:20:45,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008177225] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:20:45,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754089587] [2024-11-08 16:20:45,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:20:45,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:20:45,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:20:45,991 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:20:45,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 16:20:46,203 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 16:20:46,203 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:20:46,206 INFO L255 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-08 16:20:46,209 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:20:46,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2558 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 1774 trivial. 0 not checked. [2024-11-08 16:20:46,353 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:20:47,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2558 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 1774 trivial. 0 not checked. [2024-11-08 16:20:47,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754089587] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:20:47,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:20:47,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 61 [2024-11-08 16:20:47,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112170978] [2024-11-08 16:20:47,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:20:47,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-08 16:20:47,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:20:47,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-08 16:20:47,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2024-11-08 16:20:47,860 INFO L87 Difference]: Start difference. First operand 320 states and 386 transitions. Second operand has 61 states, 61 states have (on average 2.278688524590164) internal successors, (139), 61 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:20:48,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:20:48,107 INFO L93 Difference]: Finished difference Result 641 states and 802 transitions. [2024-11-08 16:20:48,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-08 16:20:48,108 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.278688524590164) internal successors, (139), 61 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 196 [2024-11-08 16:20:48,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:20:48,110 INFO L225 Difference]: With dead ends: 641 [2024-11-08 16:20:48,110 INFO L226 Difference]: Without dead ends: 380 [2024-11-08 16:20:48,112 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2024-11-08 16:20:48,113 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 2 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-08 16:20:48,114 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 195 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-08 16:20:48,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2024-11-08 16:20:48,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2024-11-08 16:20:48,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 1.1767810026385224) internal successors, (446), 379 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:20:48,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 446 transitions. [2024-11-08 16:20:48,132 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 446 transitions. Word has length 196 [2024-11-08 16:20:48,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:20:48,132 INFO L471 AbstractCegarLoop]: Abstraction has 380 states and 446 transitions. [2024-11-08 16:20:48,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.278688524590164) internal successors, (139), 61 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:20:48,133 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 446 transitions. [2024-11-08 16:20:48,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-08 16:20:48,138 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:20:48,139 INFO L215 NwaCegarLoop]: trace histogram [58, 58, 30, 30, 30, 30, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:20:48,161 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-08 16:20:48,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-08 16:20:48,340 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:20:48,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:20:48,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1944873397, now seen corresponding path program 3 times [2024-11-08 16:20:48,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:20:48,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657870625] [2024-11-08 16:20:48,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:20:48,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:20:48,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:20:52,674 INFO L134 CoverageAnalysis]: Checked inductivity of 5138 backedges. 0 proven. 3364 refuted. 0 times theorem prover too weak. 1774 trivial. 0 not checked. [2024-11-08 16:20:52,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:20:52,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657870625] [2024-11-08 16:20:52,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657870625] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:20:52,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340041131] [2024-11-08 16:20:52,674 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 16:20:52,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:20:52,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:20:52,676 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:20:52,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 16:20:52,891 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2024-11-08 16:20:52,891 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:20:52,894 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-08 16:20:52,899 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:20:54,734 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 16:20:54,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 13 [2024-11-08 16:20:54,799 INFO L134 CoverageAnalysis]: Checked inductivity of 5138 backedges. 1 proven. 205 refuted. 0 times theorem prover too weak. 4932 trivial. 0 not checked. [2024-11-08 16:20:54,799 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:20:56,155 INFO L349 Elim1Store]: treesize reduction 13, result has 73.5 percent of original size [2024-11-08 16:20:56,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 49 treesize of output 47 [2024-11-08 16:20:56,317 INFO L134 CoverageAnalysis]: Checked inductivity of 5138 backedges. 29 proven. 177 refuted. 0 times theorem prover too weak. 4932 trivial. 0 not checked. [2024-11-08 16:20:56,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340041131] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:20:56,318 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:20:56,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 13, 12] total 82 [2024-11-08 16:20:56,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167295151] [2024-11-08 16:20:56,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:20:56,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2024-11-08 16:20:56,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:20:56,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2024-11-08 16:20:56,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1924, Invalid=4718, Unknown=0, NotChecked=0, Total=6642 [2024-11-08 16:20:56,322 INFO L87 Difference]: Start difference. First operand 380 states and 446 transitions. Second operand has 82 states, 82 states have (on average 2.4390243902439024) internal successors, (200), 82 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:20:59,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:20:59,967 INFO L93 Difference]: Finished difference Result 784 states and 953 transitions. [2024-11-08 16:20:59,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2024-11-08 16:20:59,968 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 2.4390243902439024) internal successors, (200), 82 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 256 [2024-11-08 16:20:59,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:20:59,972 INFO L225 Difference]: With dead ends: 784 [2024-11-08 16:20:59,972 INFO L226 Difference]: Without dead ends: 523 [2024-11-08 16:20:59,977 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 638 GetRequests, 491 SyntacticMatches, 0 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3903 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=5656, Invalid=16396, Unknown=0, NotChecked=0, Total=22052 [2024-11-08 16:20:59,978 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 60 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 16:20:59,978 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 334 Invalid, 782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 16:20:59,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2024-11-08 16:20:59,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 386. [2024-11-08 16:20:59,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 1.174025974025974) internal successors, (452), 385 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:20:59,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 452 transitions. [2024-11-08 16:20:59,999 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 452 transitions. Word has length 256 [2024-11-08 16:20:59,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:20:59,999 INFO L471 AbstractCegarLoop]: Abstraction has 386 states and 452 transitions. [2024-11-08 16:20:59,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 2.4390243902439024) internal successors, (200), 82 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:21:00,000 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 452 transitions. [2024-11-08 16:21:00,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2024-11-08 16:21:00,003 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:21:00,003 INFO L215 NwaCegarLoop]: trace histogram [59, 59, 30, 30, 30, 30, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:21:00,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-08 16:21:00,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:21:00,204 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:21:00,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:21:00,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1418101153, now seen corresponding path program 4 times [2024-11-08 16:21:00,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:21:00,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169874078] [2024-11-08 16:21:00,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:21:00,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:21:00,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:21:04,115 INFO L134 CoverageAnalysis]: Checked inductivity of 5262 backedges. 0 proven. 3481 refuted. 0 times theorem prover too weak. 1781 trivial. 0 not checked. [2024-11-08 16:21:04,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:21:04,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169874078] [2024-11-08 16:21:04,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169874078] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:21:04,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448160828] [2024-11-08 16:21:04,115 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 16:21:04,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:21:04,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:21:04,117 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:21:04,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 16:21:04,456 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 16:21:04,456 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:21:04,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 949 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-08 16:21:04,467 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:21:05,952 INFO L134 CoverageAnalysis]: Checked inductivity of 5262 backedges. 1 proven. 1770 refuted. 0 times theorem prover too weak. 3491 trivial. 0 not checked. [2024-11-08 16:21:05,952 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:21:08,461 INFO L134 CoverageAnalysis]: Checked inductivity of 5262 backedges. 1 proven. 1770 refuted. 0 times theorem prover too weak. 3491 trivial. 0 not checked. [2024-11-08 16:21:08,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448160828] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:21:08,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:21:08,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 33, 33] total 124 [2024-11-08 16:21:08,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60441690] [2024-11-08 16:21:08,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:21:08,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 124 states [2024-11-08 16:21:08,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:21:08,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2024-11-08 16:21:08,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3906, Invalid=11346, Unknown=0, NotChecked=0, Total=15252 [2024-11-08 16:21:08,499 INFO L87 Difference]: Start difference. First operand 386 states and 452 transitions. Second operand has 124 states, 124 states have (on average 3.1451612903225805) internal successors, (390), 124 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:21:09,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:21:09,705 INFO L93 Difference]: Finished difference Result 910 states and 1170 transitions. [2024-11-08 16:21:09,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2024-11-08 16:21:09,706 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 124 states have (on average 3.1451612903225805) internal successors, (390), 124 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 262 [2024-11-08 16:21:09,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:21:09,710 INFO L225 Difference]: With dead ends: 910 [2024-11-08 16:21:09,710 INFO L226 Difference]: Without dead ends: 645 [2024-11-08 16:21:09,712 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 584 GetRequests, 462 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3658 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=3906, Invalid=11346, Unknown=0, NotChecked=0, Total=15252 [2024-11-08 16:21:09,713 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 233 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 16:21:09,714 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 316 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 16:21:09,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2024-11-08 16:21:09,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 644. [2024-11-08 16:21:09,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 643 states have (on average 1.2037325038880249) internal successors, (774), 643 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:21:09,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 774 transitions. [2024-11-08 16:21:09,746 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 774 transitions. Word has length 262 [2024-11-08 16:21:09,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:21:09,747 INFO L471 AbstractCegarLoop]: Abstraction has 644 states and 774 transitions. [2024-11-08 16:21:09,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 124 states, 124 states have (on average 3.1451612903225805) internal successors, (390), 124 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:21:09,747 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 774 transitions. [2024-11-08 16:21:09,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2024-11-08 16:21:09,755 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:21:09,755 INFO L215 NwaCegarLoop]: trace histogram [62, 62, 62, 62, 60, 60, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:21:09,780 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-08 16:21:09,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:21:09,956 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:21:09,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:21:09,957 INFO L85 PathProgramCache]: Analyzing trace with hash -207383546, now seen corresponding path program 5 times [2024-11-08 16:21:09,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:21:09,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737968130] [2024-11-08 16:21:09,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:21:09,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:21:10,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:21:14,465 INFO L134 CoverageAnalysis]: Checked inductivity of 11237 backedges. 0 proven. 3600 refuted. 0 times theorem prover too weak. 7637 trivial. 0 not checked. [2024-11-08 16:21:14,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:21:14,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737968130] [2024-11-08 16:21:14,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737968130] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:21:14,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699163811] [2024-11-08 16:21:14,466 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-08 16:21:14,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:21:14,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:21:14,468 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:21:14,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 16:28:01,942 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 63 check-sat command(s) [2024-11-08 16:28:01,942 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:28:02,019 INFO L255 TraceCheckSpWp]: Trace formula consists of 1194 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-08 16:28:02,028 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:28:05,958 INFO L134 CoverageAnalysis]: Checked inductivity of 11237 backedges. 1 proven. 7626 refuted. 0 times theorem prover too weak. 3610 trivial. 0 not checked. [2024-11-08 16:28:05,959 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:28:12,940 INFO L134 CoverageAnalysis]: Checked inductivity of 11237 backedges. 1 proven. 7626 refuted. 0 times theorem prover too weak. 3610 trivial. 0 not checked. [2024-11-08 16:28:12,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699163811] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:28:12,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:28:12,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 65, 65] total 189 [2024-11-08 16:28:12,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392165484] [2024-11-08 16:28:12,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:28:12,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 189 states [2024-11-08 16:28:12,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:28:12,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 189 interpolants. [2024-11-08 16:28:12,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10080, Invalid=25452, Unknown=0, NotChecked=0, Total=35532 [2024-11-08 16:28:12,951 INFO L87 Difference]: Start difference. First operand 644 states and 774 transitions. Second operand has 189 states, 189 states have (on average 3.4285714285714284) internal successors, (648), 189 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:28:15,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:28:15,793 INFO L93 Difference]: Finished difference Result 1680 states and 2196 transitions. [2024-11-08 16:28:15,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2024-11-08 16:28:15,794 INFO L78 Accepts]: Start accepts. Automaton has has 189 states, 189 states have (on average 3.4285714285714284) internal successors, (648), 189 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 392 [2024-11-08 16:28:15,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:28:15,799 INFO L225 Difference]: With dead ends: 1680 [2024-11-08 16:28:15,799 INFO L226 Difference]: Without dead ends: 1159 [2024-11-08 16:28:15,804 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 845 GetRequests, 658 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7560 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=10080, Invalid=25452, Unknown=0, NotChecked=0, Total=35532 [2024-11-08 16:28:15,805 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 608 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 16:28:15,805 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [608 Valid, 318 Invalid, 680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 16:28:15,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2024-11-08 16:28:15,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1158. [2024-11-08 16:28:15,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 1157 states have (on average 1.2238547968885047) internal successors, (1416), 1157 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:28:15,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1416 transitions. [2024-11-08 16:28:15,858 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1416 transitions. Word has length 392 [2024-11-08 16:28:15,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:28:15,859 INFO L471 AbstractCegarLoop]: Abstraction has 1158 states and 1416 transitions. [2024-11-08 16:28:15,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 189 states, 189 states have (on average 3.4285714285714284) internal successors, (648), 189 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:28:15,860 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1416 transitions. [2024-11-08 16:28:15,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 651 [2024-11-08 16:28:15,878 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:28:15,878 INFO L215 NwaCegarLoop]: trace histogram [126, 126, 126, 126, 61, 61, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:28:15,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-08 16:28:16,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:28:16,079 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:28:16,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:28:16,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1750436363, now seen corresponding path program 6 times [2024-11-08 16:28:16,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:28:16,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339548169] [2024-11-08 16:28:16,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:28:16,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:28:16,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:28:21,076 INFO L134 CoverageAnalysis]: Checked inductivity of 35358 backedges. 0 proven. 3721 refuted. 0 times theorem prover too weak. 31637 trivial. 0 not checked. [2024-11-08 16:28:21,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:28:21,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339548169] [2024-11-08 16:28:21,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339548169] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:28:21,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97154384] [2024-11-08 16:28:21,078 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-08 16:28:21,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:28:21,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:28:21,080 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:28:21,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 16:28:21,792 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2024-11-08 16:28:21,792 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:28:21,795 INFO L255 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-08 16:28:21,806 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:28:25,173 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 16:28:25,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 13 [2024-11-08 16:28:25,217 INFO L134 CoverageAnalysis]: Checked inductivity of 35358 backedges. 1 proven. 1378 refuted. 0 times theorem prover too weak. 33979 trivial. 0 not checked. [2024-11-08 16:28:25,217 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:28:28,551 INFO L349 Elim1Store]: treesize reduction 13, result has 73.5 percent of original size [2024-11-08 16:28:28,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 49 treesize of output 47 [2024-11-08 16:28:28,748 INFO L134 CoverageAnalysis]: Checked inductivity of 35358 backedges. 124 proven. 1255 refuted. 0 times theorem prover too weak. 33979 trivial. 0 not checked. [2024-11-08 16:28:28,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97154384] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:28:28,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:28:28,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 15, 14] total 89 [2024-11-08 16:28:28,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742097961] [2024-11-08 16:28:28,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:28:28,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2024-11-08 16:28:28,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:28:28,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2024-11-08 16:28:28,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2127, Invalid=5705, Unknown=0, NotChecked=0, Total=7832 [2024-11-08 16:28:28,754 INFO L87 Difference]: Start difference. First operand 1158 states and 1416 transitions. Second operand has 89 states, 89 states have (on average 2.49438202247191) internal successors, (222), 89 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:28:32,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:28:32,373 INFO L93 Difference]: Finished difference Result 2722 states and 3372 transitions. [2024-11-08 16:28:32,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-11-08 16:28:32,373 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.49438202247191) internal successors, (222), 89 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 650 [2024-11-08 16:28:32,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:28:32,381 INFO L225 Difference]: With dead ends: 2722 [2024-11-08 16:28:32,381 INFO L226 Difference]: Without dead ends: 1689 [2024-11-08 16:28:32,385 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1430 GetRequests, 1275 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4416 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=6211, Invalid=18281, Unknown=0, NotChecked=0, Total=24492 [2024-11-08 16:28:32,385 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 71 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-08 16:28:32,386 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 482 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-08 16:28:32,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2024-11-08 16:28:32,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 1164. [2024-11-08 16:28:32,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1164 states, 1163 states have (on average 1.2226999140154773) internal successors, (1422), 1163 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:28:32,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 1422 transitions. [2024-11-08 16:28:32,475 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 1422 transitions. Word has length 650 [2024-11-08 16:28:32,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:28:32,475 INFO L471 AbstractCegarLoop]: Abstraction has 1164 states and 1422 transitions. [2024-11-08 16:28:32,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 2.49438202247191) internal successors, (222), 89 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:28:32,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 1422 transitions. [2024-11-08 16:28:32,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2024-11-08 16:28:32,495 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:28:32,495 INFO L215 NwaCegarLoop]: trace histogram [126, 126, 126, 126, 62, 62, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:28:32,517 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-08 16:28:32,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:28:32,697 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:28:32,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:28:32,697 INFO L85 PathProgramCache]: Analyzing trace with hash 244819127, now seen corresponding path program 7 times [2024-11-08 16:28:32,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:28:32,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656505632] [2024-11-08 16:28:32,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:28:32,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:28:32,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:28:37,416 INFO L134 CoverageAnalysis]: Checked inductivity of 35492 backedges. 0 proven. 3844 refuted. 0 times theorem prover too weak. 31648 trivial. 0 not checked. [2024-11-08 16:28:37,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:28:37,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656505632] [2024-11-08 16:28:37,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656505632] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:28:37,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114952200] [2024-11-08 16:28:37,417 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-08 16:28:37,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:28:37,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:28:37,420 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:28:37,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-08 16:28:37,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:28:37,934 INFO L255 TraceCheckSpWp]: Trace formula consists of 1856 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-08 16:28:37,941 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:28:38,140 INFO L134 CoverageAnalysis]: Checked inductivity of 35492 backedges. 0 proven. 3844 refuted. 0 times theorem prover too weak. 31648 trivial. 0 not checked. [2024-11-08 16:28:38,140 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:28:43,362 INFO L134 CoverageAnalysis]: Checked inductivity of 35492 backedges. 0 proven. 3844 refuted. 0 times theorem prover too weak. 31648 trivial. 0 not checked. [2024-11-08 16:28:43,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114952200] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:28:43,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:28:43,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 129 [2024-11-08 16:28:43,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206751273] [2024-11-08 16:28:43,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:28:43,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2024-11-08 16:28:43,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:28:43,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2024-11-08 16:28:43,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2024-11-08 16:28:43,370 INFO L87 Difference]: Start difference. First operand 1164 states and 1422 transitions. Second operand has 129 states, 129 states have (on average 2.131782945736434) internal successors, (275), 129 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:28:43,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:28:43,903 INFO L93 Difference]: Finished difference Result 2329 states and 2908 transitions. [2024-11-08 16:28:43,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2024-11-08 16:28:43,906 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 129 states have (on average 2.131782945736434) internal successors, (275), 129 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 656 [2024-11-08 16:28:43,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:28:43,911 INFO L225 Difference]: With dead ends: 2329 [2024-11-08 16:28:43,912 INFO L226 Difference]: Without dead ends: 1292 [2024-11-08 16:28:43,914 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1375 GetRequests, 1248 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2024-11-08 16:28:43,916 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 2 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-08 16:28:43,916 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 171 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-08 16:28:43,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2024-11-08 16:28:43,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1292. [2024-11-08 16:28:43,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1292 states, 1291 states have (on average 1.2006196746707978) internal successors, (1550), 1291 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:28:43,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1292 states to 1292 states and 1550 transitions. [2024-11-08 16:28:43,983 INFO L78 Accepts]: Start accepts. Automaton has 1292 states and 1550 transitions. Word has length 656 [2024-11-08 16:28:43,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:28:43,983 INFO L471 AbstractCegarLoop]: Abstraction has 1292 states and 1550 transitions. [2024-11-08 16:28:43,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 129 states, 129 states have (on average 2.131782945736434) internal successors, (275), 129 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:28:43,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1292 states and 1550 transitions. [2024-11-08 16:28:43,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 785 [2024-11-08 16:28:43,991 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:28:43,991 INFO L215 NwaCegarLoop]: trace histogram [126, 126, 126, 126, 126, 126, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:28:44,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-08 16:28:44,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:28:44,192 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:28:44,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:28:44,192 INFO L85 PathProgramCache]: Analyzing trace with hash -880206345, now seen corresponding path program 8 times [2024-11-08 16:28:44,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:28:44,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135460915] [2024-11-08 16:28:44,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:28:44,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:28:44,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:29:00,473 INFO L134 CoverageAnalysis]: Checked inductivity of 47524 backedges. 0 proven. 15876 refuted. 0 times theorem prover too weak. 31648 trivial. 0 not checked. [2024-11-08 16:29:00,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:29:00,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135460915] [2024-11-08 16:29:00,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135460915] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:29:00,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47572032] [2024-11-08 16:29:00,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 16:29:00,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:29:00,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:29:00,476 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:29:00,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-08 16:29:01,141 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 16:29:01,141 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:29:01,151 INFO L255 TraceCheckSpWp]: Trace formula consists of 2496 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-11-08 16:29:01,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:29:01,517 INFO L134 CoverageAnalysis]: Checked inductivity of 47524 backedges. 0 proven. 15876 refuted. 0 times theorem prover too weak. 31648 trivial. 0 not checked. [2024-11-08 16:29:01,518 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:29:21,457 INFO L134 CoverageAnalysis]: Checked inductivity of 47524 backedges. 0 proven. 15876 refuted. 0 times theorem prover too weak. 31648 trivial. 0 not checked. [2024-11-08 16:29:21,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47572032] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:29:21,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:29:21,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129, 129] total 257 [2024-11-08 16:29:21,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594106662] [2024-11-08 16:29:21,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:29:21,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 257 states [2024-11-08 16:29:21,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:29:21,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 257 interpolants. [2024-11-08 16:29:21,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32896, Invalid=32896, Unknown=0, NotChecked=0, Total=65792 [2024-11-08 16:29:21,511 INFO L87 Difference]: Start difference. First operand 1292 states and 1550 transitions. Second operand has 257 states, 257 states have (on average 2.066147859922179) internal successors, (531), 257 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:29:23,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:29:23,683 INFO L93 Difference]: Finished difference Result 2585 states and 3228 transitions. [2024-11-08 16:29:23,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 256 states. [2024-11-08 16:29:23,683 INFO L78 Accepts]: Start accepts. Automaton has has 257 states, 257 states have (on average 2.066147859922179) internal successors, (531), 257 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 784 [2024-11-08 16:29:23,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:29:23,690 INFO L225 Difference]: With dead ends: 2585 [2024-11-08 16:29:23,690 INFO L226 Difference]: Without dead ends: 1548 [2024-11-08 16:29:23,695 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1695 GetRequests, 1440 SyntacticMatches, 0 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 26.2s TimeCoverageRelationStatistics Valid=32896, Invalid=32896, Unknown=0, NotChecked=0, Total=65792 [2024-11-08 16:29:23,696 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 2 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-08 16:29:23,696 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 243 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-08 16:29:23,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2024-11-08 16:29:23,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1548. [2024-11-08 16:29:23,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1548 states, 1547 states have (on average 1.167420814479638) internal successors, (1806), 1547 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:29:23,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1548 states to 1548 states and 1806 transitions. [2024-11-08 16:29:23,768 INFO L78 Accepts]: Start accepts. Automaton has 1548 states and 1806 transitions. Word has length 784 [2024-11-08 16:29:23,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:29:23,769 INFO L471 AbstractCegarLoop]: Abstraction has 1548 states and 1806 transitions. [2024-11-08 16:29:23,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 257 states, 257 states have (on average 2.066147859922179) internal successors, (531), 257 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:29:23,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1548 states and 1806 transitions. [2024-11-08 16:29:23,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1041 [2024-11-08 16:29:23,780 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:29:23,780 INFO L215 NwaCegarLoop]: trace histogram [254, 254, 126, 126, 126, 126, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:29:23,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-08 16:29:23,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:29:23,981 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:29:23,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:29:23,981 INFO L85 PathProgramCache]: Analyzing trace with hash -487583625, now seen corresponding path program 9 times [2024-11-08 16:29:23,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:29:23,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223809576] [2024-11-08 16:29:23,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:29:23,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:29:24,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:30:26,511 INFO L134 CoverageAnalysis]: Checked inductivity of 96164 backedges. 0 proven. 64516 refuted. 0 times theorem prover too weak. 31648 trivial. 0 not checked. [2024-11-08 16:30:26,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:30:26,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223809576] [2024-11-08 16:30:26,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223809576] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:30:26,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845046643] [2024-11-08 16:30:26,512 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 16:30:26,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:30:26,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:30:26,513 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:30:26,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-08 16:30:27,367 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2024-11-08 16:30:27,368 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:30:27,372 INFO L255 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-08 16:30:27,385 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:30:32,017 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 16:30:32,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 13 [2024-11-08 16:30:32,142 INFO L134 CoverageAnalysis]: Checked inductivity of 96164 backedges. 1 proven. 1879 refuted. 0 times theorem prover too weak. 94284 trivial. 0 not checked. [2024-11-08 16:30:32,142 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:30:36,759 INFO L349 Elim1Store]: treesize reduction 13, result has 73.5 percent of original size [2024-11-08 16:30:36,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 49 treesize of output 47 [2024-11-08 16:30:37,315 INFO L134 CoverageAnalysis]: Checked inductivity of 96164 backedges. 123 proven. 1757 refuted. 0 times theorem prover too weak. 94284 trivial. 0 not checked. [2024-11-08 16:30:37,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845046643] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:30:37,315 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:30:37,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [257, 17, 16] total 285 [2024-11-08 16:30:37,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593243321] [2024-11-08 16:30:37,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:30:37,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 285 states [2024-11-08 16:30:37,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:30:37,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 285 interpolants. [2024-11-08 16:30:37,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33021, Invalid=47919, Unknown=0, NotChecked=0, Total=80940 [2024-11-08 16:30:37,330 INFO L87 Difference]: Start difference. First operand 1548 states and 1806 transitions. Second operand has 285 states, 285 states have (on average 2.185964912280702) internal successors, (623), 285 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:31:13,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:31:13,587 INFO L93 Difference]: Finished difference Result 3120 states and 3771 transitions. [2024-11-08 16:31:13,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 277 states. [2024-11-08 16:31:13,588 INFO L78 Accepts]: Start accepts. Automaton has has 285 states, 285 states have (on average 2.185964912280702) internal successors, (623), 285 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1040 [2024-11-08 16:31:13,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:31:13,596 INFO L225 Difference]: With dead ends: 3120 [2024-11-08 16:31:13,596 INFO L226 Difference]: Without dead ends: 2083 [2024-11-08 16:31:13,614 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2597 GetRequests, 2051 SyntacticMatches, 1 SemanticMatches, 545 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43658 ImplicationChecksByTransitivity, 64.0s TimeCoverageRelationStatistics Valid=98872, Invalid=199790, Unknown=0, NotChecked=0, Total=298662 [2024-11-08 16:31:13,615 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 78 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 2001 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 2007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 2001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-08 16:31:13,615 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 647 Invalid, 2007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 2001 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-08 16:31:13,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2083 states. [2024-11-08 16:31:13,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2083 to 1554. [2024-11-08 16:31:13,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1554 states, 1553 states have (on average 1.16677398583387) internal successors, (1812), 1553 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:31:13,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 1812 transitions. [2024-11-08 16:31:13,694 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 1812 transitions. Word has length 1040 [2024-11-08 16:31:13,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:31:13,695 INFO L471 AbstractCegarLoop]: Abstraction has 1554 states and 1812 transitions. [2024-11-08 16:31:13,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 285 states, 285 states have (on average 2.185964912280702) internal successors, (623), 285 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:31:13,696 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 1812 transitions. [2024-11-08 16:31:13,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1047 [2024-11-08 16:31:13,707 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:31:13,707 INFO L215 NwaCegarLoop]: trace histogram [255, 255, 126, 126, 126, 126, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:31:13,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-08 16:31:13,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-08 16:31:13,909 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:31:13,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:31:13,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1424551267, now seen corresponding path program 10 times [2024-11-08 16:31:13,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:31:13,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766819608] [2024-11-08 16:31:13,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:31:13,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:31:14,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:32:14,127 INFO L134 CoverageAnalysis]: Checked inductivity of 96688 backedges. 0 proven. 65025 refuted. 0 times theorem prover too weak. 31663 trivial. 0 not checked. [2024-11-08 16:32:14,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:32:14,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766819608] [2024-11-08 16:32:14,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766819608] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 16:32:14,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732833820] [2024-11-08 16:32:14,128 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-08 16:32:14,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:32:14,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:32:14,129 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 16:32:14,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-08 16:32:15,197 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-08 16:32:15,198 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 16:32:15,212 INFO L255 TraceCheckSpWp]: Trace formula consists of 3799 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-11-08 16:32:15,227 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 16:32:35,669 INFO L134 CoverageAnalysis]: Checked inductivity of 96688 backedges. 1 proven. 31626 refuted. 0 times theorem prover too weak. 65061 trivial. 0 not checked. [2024-11-08 16:32:35,669 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 16:33:09,485 INFO L134 CoverageAnalysis]: Checked inductivity of 96688 backedges. 1 proven. 31626 refuted. 0 times theorem prover too weak. 65061 trivial. 0 not checked. [2024-11-08 16:33:09,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732833820] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 16:33:09,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 16:33:09,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [258, 129, 129] total 512 [2024-11-08 16:33:09,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830774282] [2024-11-08 16:33:09,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 16:33:09,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 512 states [2024-11-08 16:33:09,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:33:09,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 512 interpolants. [2024-11-08 16:33:09,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65792, Invalid=195840, Unknown=0, NotChecked=0, Total=261632 [2024-11-08 16:33:09,520 INFO L87 Difference]: Start difference. First operand 1554 states and 1812 transitions. Second operand has 512 states, 512 states have (on average 3.02734375) internal successors, (1550), 512 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:33:35,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 16:33:35,209 INFO L93 Difference]: Finished difference Result 3622 states and 4650 transitions. [2024-11-08 16:33:35,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 512 states. [2024-11-08 16:33:35,211 INFO L78 Accepts]: Start accepts. Automaton has has 512 states, 512 states have (on average 3.02734375) internal successors, (1550), 512 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1046 [2024-11-08 16:33:35,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 16:33:35,220 INFO L225 Difference]: With dead ends: 3622 [2024-11-08 16:33:35,220 INFO L226 Difference]: Without dead ends: 2581 [2024-11-08 16:33:35,235 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2348 GetRequests, 1838 SyntacticMatches, 0 SemanticMatches, 510 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64770 ImplicationChecksByTransitivity, 79.6s TimeCoverageRelationStatistics Valid=65792, Invalid=195840, Unknown=0, NotChecked=0, Total=261632 [2024-11-08 16:33:35,236 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 1299 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 1607 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1299 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 1609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-08 16:33:35,237 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1299 Valid, 540 Invalid, 1609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1607 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-08 16:33:35,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2581 states. [2024-11-08 16:33:35,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2581 to 2580. [2024-11-08 16:33:35,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2580 states, 2579 states have (on average 1.1996898022489337) internal successors, (3094), 2579 states have internal predecessors, (3094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:33:35,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2580 states to 2580 states and 3094 transitions. [2024-11-08 16:33:35,477 INFO L78 Accepts]: Start accepts. Automaton has 2580 states and 3094 transitions. Word has length 1046 [2024-11-08 16:33:35,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 16:33:35,479 INFO L471 AbstractCegarLoop]: Abstraction has 2580 states and 3094 transitions. [2024-11-08 16:33:35,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 512 states, 512 states have (on average 3.02734375) internal successors, (1550), 512 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:33:35,480 INFO L276 IsEmpty]: Start isEmpty. Operand 2580 states and 3094 transitions. [2024-11-08 16:33:35,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1561 [2024-11-08 16:33:35,500 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 16:33:35,500 INFO L215 NwaCegarLoop]: trace histogram [256, 256, 254, 254, 254, 254, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:33:35,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-08 16:33:35,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bd6333-5183-47f0-aeff-fcf248cdf678/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 16:33:35,701 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 16:33:35,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:33:35,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1615550568, now seen corresponding path program 11 times [2024-11-08 16:33:35,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:33:35,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589589995] [2024-11-08 16:33:35,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:33:35,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:33:36,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat