./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya --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 39f35a37b269351a16278221a7bbfcc0d2e5f28c28376776cbcd4a03ccd8aa74 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:59:32,273 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:59:32,339 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 01:59:32,343 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:59:32,344 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:59:32,368 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:59:32,368 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:59:32,369 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:59:32,370 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:59:32,370 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:59:32,371 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:59:32,371 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:59:32,372 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:59:32,372 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:59:32,373 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:59:32,374 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:59:32,374 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:59:32,375 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:59:32,375 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:59:32,376 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:59:32,376 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:59:32,377 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:59:32,377 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:59:32,378 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:59:32,378 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:59:32,379 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:59:32,379 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:59:32,379 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:59:32,380 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:59:32,380 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:59:32,381 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:59:32,381 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:59:32,381 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:59:32,382 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:59:32,382 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:59:32,382 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:59:32,382 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:59:32,382 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:59:32,383 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:59:32,383 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:59:32,383 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:59:32,383 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:59:32,384 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_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39f35a37b269351a16278221a7bbfcc0d2e5f28c28376776cbcd4a03ccd8aa74 [2023-11-29 01:59:32,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:59:32,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:59:32,621 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:59:32,622 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:59:32,623 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:59:32,624 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-3.i [2023-11-29 01:59:35,457 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:59:35,687 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:59:35,688 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-3.i [2023-11-29 01:59:35,703 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/data/611fffa11/ab07747d12144cbcb9fe934344d8c61a/FLAG9e0a5e70d [2023-11-29 01:59:35,716 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/data/611fffa11/ab07747d12144cbcb9fe934344d8c61a [2023-11-29 01:59:35,719 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:59:35,720 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:59:35,722 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:59:35,722 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:59:35,727 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:59:35,728 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:59:35" (1/1) ... [2023-11-29 01:59:35,729 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3147ee50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:59:35, skipping insertion in model container [2023-11-29 01:59:35,729 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:59:35" (1/1) ... [2023-11-29 01:59:35,782 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:59:35,910 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-3.i[915,928] [2023-11-29 01:59:36,098 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:59:36,119 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:59:36,129 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-500_file-3.i[915,928] [2023-11-29 01:59:36,223 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:59:36,244 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:59:36,245 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:59:36 WrapperNode [2023-11-29 01:59:36,245 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:59:36,246 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:59:36,246 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:59:36,246 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:59:36,252 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:59:36" (1/1) ... [2023-11-29 01:59:36,279 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:59:36" (1/1) ... [2023-11-29 01:59:36,421 INFO L138 Inliner]: procedures = 26, calls = 127, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 866 [2023-11-29 01:59:36,421 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:59:36,422 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:59:36,422 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:59:36,422 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:59:36,435 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:59:36" (1/1) ... [2023-11-29 01:59:36,435 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:59:36" (1/1) ... [2023-11-29 01:59:36,446 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:59:36" (1/1) ... [2023-11-29 01:59:36,480 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 01:59:36,480 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:59:36" (1/1) ... [2023-11-29 01:59:36,481 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:59:36" (1/1) ... [2023-11-29 01:59:36,503 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:59:36" (1/1) ... [2023-11-29 01:59:36,514 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:59:36" (1/1) ... [2023-11-29 01:59:36,521 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:59:36" (1/1) ... [2023-11-29 01:59:36,531 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:59:36" (1/1) ... [2023-11-29 01:59:36,540 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:59:36,541 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:59:36,541 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:59:36,541 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:59:36,542 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:59:36" (1/1) ... [2023-11-29 01:59:36,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:59:36,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:59:36,575 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:59:36,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:59:36,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:59:36,615 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 01:59:36,615 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 01:59:36,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:59:36,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:59:36,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:59:36,766 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:59:36,768 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:59:37,790 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:59:37,854 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:59:37,854 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 01:59:37,855 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:59:37 BoogieIcfgContainer [2023-11-29 01:59:37,855 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:59:37,857 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:59:37,858 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:59:37,861 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:59:37,861 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:59:35" (1/3) ... [2023-11-29 01:59:37,862 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a1d727d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:59:37, skipping insertion in model container [2023-11-29 01:59:37,862 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:59:36" (2/3) ... [2023-11-29 01:59:37,862 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a1d727d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:59:37, skipping insertion in model container [2023-11-29 01:59:37,862 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:59:37" (3/3) ... [2023-11-29 01:59:37,863 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-500_file-3.i [2023-11-29 01:59:37,883 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:59:37,883 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 01:59:37,945 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:59:37,951 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2c7e080d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:59:37,951 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 01:59:37,958 INFO L276 IsEmpty]: Start isEmpty. Operand has 344 states, 227 states have (on average 1.6343612334801763) internal successors, (371), 228 states have internal predecessors, (371), 114 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) [2023-11-29 01:59:38,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 727 [2023-11-29 01:59:38,004 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:59:38,005 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:59:38,006 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:59:38,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:59:38,011 INFO L85 PathProgramCache]: Analyzing trace with hash -31867623, now seen corresponding path program 1 times [2023-11-29 01:59:38,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:59:38,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849926616] [2023-11-29 01:59:38,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:59:38,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:59:38,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:59:38,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:59:38,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849926616] [2023-11-29 01:59:38,418 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 01:59:38,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389416206] [2023-11-29 01:59:38,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:59:38,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:59:38,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:59:38,425 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:59:38,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:59:38,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:59:38,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 1632 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 01:59:38,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:59:39,039 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 226 proven. 0 refuted. 0 times theorem prover too weak. 25538 trivial. 0 not checked. [2023-11-29 01:59:39,039 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:59:39,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389416206] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:59:39,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:59:39,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:59:39,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391589135] [2023-11-29 01:59:39,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:59:39,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 01:59:39,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:59:39,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 01:59:39,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:59:39,080 INFO L87 Difference]: Start difference. First operand has 344 states, 227 states have (on average 1.6343612334801763) internal successors, (371), 228 states have internal predecessors, (371), 114 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) Second operand has 2 states, 2 states have (on average 80.5) internal successors, (161), 2 states have internal predecessors, (161), 2 states have call successors, (114), 2 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 2 states have call successors, (114) [2023-11-29 01:59:39,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:59:39,164 INFO L93 Difference]: Finished difference Result 685 states and 1310 transitions. [2023-11-29 01:59:39,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 01:59:39,168 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 80.5) internal successors, (161), 2 states have internal predecessors, (161), 2 states have call successors, (114), 2 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 2 states have call successors, (114) Word has length 726 [2023-11-29 01:59:39,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:59:39,183 INFO L225 Difference]: With dead ends: 685 [2023-11-29 01:59:39,183 INFO L226 Difference]: Without dead ends: 342 [2023-11-29 01:59:39,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 725 GetRequests, 725 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:59:39,198 INFO L413 NwaCegarLoop]: 589 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:59:39,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 589 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:59:39,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2023-11-29 01:59:39,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2023-11-29 01:59:39,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 226 states have (on average 1.6106194690265487) internal successors, (364), 226 states have internal predecessors, (364), 114 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) [2023-11-29 01:59:39,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 592 transitions. [2023-11-29 01:59:39,306 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 592 transitions. Word has length 726 [2023-11-29 01:59:39,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:59:39,306 INFO L495 AbstractCegarLoop]: Abstraction has 342 states and 592 transitions. [2023-11-29 01:59:39,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 80.5) internal successors, (161), 2 states have internal predecessors, (161), 2 states have call successors, (114), 2 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 2 states have call successors, (114) [2023-11-29 01:59:39,307 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 592 transitions. [2023-11-29 01:59:39,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 727 [2023-11-29 01:59:39,354 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:59:39,355 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:59:39,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:59:39,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 01:59:39,556 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:59:39,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:59:39,557 INFO L85 PathProgramCache]: Analyzing trace with hash -2050886755, now seen corresponding path program 1 times [2023-11-29 01:59:39,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:59:39,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864580974] [2023-11-29 01:59:39,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:59:39,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:59:39,702 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:59:39,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [211437557] [2023-11-29 01:59:39,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:59:39,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:59:39,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:59:39,705 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:59:39,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:59:40,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:59:40,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 1632 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:59:40,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:59:40,266 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-11-29 01:59:40,267 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:59:40,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:59:40,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864580974] [2023-11-29 01:59:40,267 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:59:40,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211437557] [2023-11-29 01:59:40,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211437557] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:59:40,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:59:40,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:59:40,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749204091] [2023-11-29 01:59:40,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:59:40,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:59:40,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:59:40,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:59:40,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:59:40,273 INFO L87 Difference]: Start difference. First operand 342 states and 592 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-29 01:59:40,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:59:40,334 INFO L93 Difference]: Finished difference Result 684 states and 1185 transitions. [2023-11-29 01:59:40,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:59:40,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 726 [2023-11-29 01:59:40,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:59:40,344 INFO L225 Difference]: With dead ends: 684 [2023-11-29 01:59:40,344 INFO L226 Difference]: Without dead ends: 343 [2023-11-29 01:59:40,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 725 GetRequests, 724 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:59:40,349 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 0 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:59:40,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1171 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:59:40,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2023-11-29 01:59:40,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2023-11-29 01:59:40,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 227 states have (on average 1.6079295154185023) internal successors, (365), 227 states have internal predecessors, (365), 114 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) [2023-11-29 01:59:40,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 593 transitions. [2023-11-29 01:59:40,422 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 593 transitions. Word has length 726 [2023-11-29 01:59:40,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:59:40,426 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 593 transitions. [2023-11-29 01:59:40,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-29 01:59:40,427 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 593 transitions. [2023-11-29 01:59:40,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 728 [2023-11-29 01:59:40,440 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:59:40,440 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:59:40,449 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:59:40,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:59:40,641 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:59:40,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:59:40,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1428924628, now seen corresponding path program 1 times [2023-11-29 01:59:40,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:59:40,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293842890] [2023-11-29 01:59:40,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:59:40,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:59:40,773 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:59:40,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [208630867] [2023-11-29 01:59:40,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:59:40,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:59:40,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:59:40,775 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:59:40,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:59:41,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:59:41,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 1633 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:59:41,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:59:41,308 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-11-29 01:59:41,308 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:59:41,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:59:41,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293842890] [2023-11-29 01:59:41,309 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:59:41,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208630867] [2023-11-29 01:59:41,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208630867] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:59:41,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:59:41,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:59:41,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553627260] [2023-11-29 01:59:41,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:59:41,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:59:41,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:59:41,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:59:41,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:59:41,313 INFO L87 Difference]: Start difference. First operand 343 states and 593 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-29 01:59:41,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:59:41,431 INFO L93 Difference]: Finished difference Result 921 states and 1593 transitions. [2023-11-29 01:59:41,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:59:41,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 727 [2023-11-29 01:59:41,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:59:41,439 INFO L225 Difference]: With dead ends: 921 [2023-11-29 01:59:41,439 INFO L226 Difference]: Without dead ends: 579 [2023-11-29 01:59:41,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 726 GetRequests, 725 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:59:41,442 INFO L413 NwaCegarLoop]: 860 mSDtfsCounter, 397 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 1428 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:59:41,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 1428 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:59:41,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2023-11-29 01:59:41,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 576. [2023-11-29 01:59:41,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 386 states have (on average 1.61139896373057) internal successors, (622), 387 states have internal predecessors, (622), 187 states have call successors, (187), 2 states have call predecessors, (187), 2 states have return successors, (187), 186 states have call predecessors, (187), 187 states have call successors, (187) [2023-11-29 01:59:41,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 996 transitions. [2023-11-29 01:59:41,500 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 996 transitions. Word has length 727 [2023-11-29 01:59:41,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:59:41,502 INFO L495 AbstractCegarLoop]: Abstraction has 576 states and 996 transitions. [2023-11-29 01:59:41,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-29 01:59:41,502 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 996 transitions. [2023-11-29 01:59:41,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2023-11-29 01:59:41,508 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:59:41,508 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:59:41,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 01:59:41,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:59:41,709 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:59:41,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:59:41,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1471251898, now seen corresponding path program 1 times [2023-11-29 01:59:41,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:59:41,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032690421] [2023-11-29 01:59:41,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:59:41,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:59:41,807 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:59:41,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [310255380] [2023-11-29 01:59:41,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:59:41,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:59:41,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:59:41,809 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:59:41,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:59:42,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:59:42,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 1637 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:59:42,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:59:42,372 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-11-29 01:59:42,372 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:59:42,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:59:42,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032690421] [2023-11-29 01:59:42,372 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:59:42,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310255380] [2023-11-29 01:59:42,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310255380] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:59:42,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:59:42,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:59:42,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176966812] [2023-11-29 01:59:42,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:59:42,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:59:42,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:59:42,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:59:42,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:59:42,376 INFO L87 Difference]: Start difference. First operand 576 states and 996 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-29 01:59:42,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:59:42,495 INFO L93 Difference]: Finished difference Result 1158 states and 1996 transitions. [2023-11-29 01:59:42,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:59:42,496 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 728 [2023-11-29 01:59:42,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:59:42,502 INFO L225 Difference]: With dead ends: 1158 [2023-11-29 01:59:42,502 INFO L226 Difference]: Without dead ends: 583 [2023-11-29 01:59:42,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 727 GetRequests, 726 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:59:42,505 INFO L413 NwaCegarLoop]: 620 mSDtfsCounter, 371 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:59:42,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 1188 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:59:42,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2023-11-29 01:59:42,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 431. [2023-11-29 01:59:42,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 314 states have (on average 1.6656050955414012) internal successors, (523), 314 states have internal predecessors, (523), 114 states have call successors, (114), 2 states have call predecessors, (114), 2 states have return successors, (114), 114 states have call predecessors, (114), 114 states have call successors, (114) [2023-11-29 01:59:42,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 751 transitions. [2023-11-29 01:59:42,549 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 751 transitions. Word has length 728 [2023-11-29 01:59:42,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:59:42,551 INFO L495 AbstractCegarLoop]: Abstraction has 431 states and 751 transitions. [2023-11-29 01:59:42,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-29 01:59:42,552 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 751 transitions. [2023-11-29 01:59:42,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2023-11-29 01:59:42,559 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:59:42,560 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:59:42,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-29 01:59:42,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:59:42,762 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:59:42,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:59:42,762 INFO L85 PathProgramCache]: Analyzing trace with hash 57067770, now seen corresponding path program 1 times [2023-11-29 01:59:42,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:59:42,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629803787] [2023-11-29 01:59:42,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:59:42,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:59:42,851 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:59:42,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [562902260] [2023-11-29 01:59:42,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:59:42,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:59:42,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:59:42,852 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:59:42,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:59:43,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:59:43,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 1637 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:59:43,320 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:59:43,377 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-11-29 01:59:43,377 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:59:43,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:59:43,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629803787] [2023-11-29 01:59:43,378 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:59:43,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562902260] [2023-11-29 01:59:43,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562902260] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:59:43,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:59:43,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:59:43,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876308860] [2023-11-29 01:59:43,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:59:43,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:59:43,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:59:43,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:59:43,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:59:43,382 INFO L87 Difference]: Start difference. First operand 431 states and 751 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-29 01:59:43,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:59:43,476 INFO L93 Difference]: Finished difference Result 1291 states and 2251 transitions. [2023-11-29 01:59:43,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:59:43,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 728 [2023-11-29 01:59:43,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:59:43,505 INFO L225 Difference]: With dead ends: 1291 [2023-11-29 01:59:43,505 INFO L226 Difference]: Without dead ends: 861 [2023-11-29 01:59:43,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 727 GetRequests, 726 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:59:43,507 INFO L413 NwaCegarLoop]: 602 mSDtfsCounter, 579 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:59:43,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 1184 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:59:43,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2023-11-29 01:59:43,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 859. [2023-11-29 01:59:43,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 626 states have (on average 1.65814696485623) internal successors, (1038), 626 states have internal predecessors, (1038), 228 states have call successors, (228), 4 states have call predecessors, (228), 4 states have return successors, (228), 228 states have call predecessors, (228), 228 states have call successors, (228) [2023-11-29 01:59:43,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1494 transitions. [2023-11-29 01:59:43,609 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1494 transitions. Word has length 728 [2023-11-29 01:59:43,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:59:43,610 INFO L495 AbstractCegarLoop]: Abstraction has 859 states and 1494 transitions. [2023-11-29 01:59:43,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-29 01:59:43,611 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1494 transitions. [2023-11-29 01:59:43,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 729 [2023-11-29 01:59:43,619 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:59:43,620 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:59:43,628 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 01:59:43,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:59:43,821 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:59:43,821 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:59:43,821 INFO L85 PathProgramCache]: Analyzing trace with hash -840325508, now seen corresponding path program 1 times [2023-11-29 01:59:43,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:59:43,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133282065] [2023-11-29 01:59:43,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:59:43,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:59:43,910 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:59:43,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1365457574] [2023-11-29 01:59:43,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:59:43,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:59:43,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:59:43,912 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:59:43,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:59:44,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:59:44,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:59:44,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:59:44,465 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-11-29 01:59:44,465 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:59:44,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:59:44,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133282065] [2023-11-29 01:59:44,465 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:59:44,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365457574] [2023-11-29 01:59:44,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365457574] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:59:44,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:59:44,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:59:44,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164696093] [2023-11-29 01:59:44,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:59:44,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:59:44,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:59:44,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:59:44,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:59:44,486 INFO L87 Difference]: Start difference. First operand 859 states and 1494 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-29 01:59:44,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:59:44,629 INFO L93 Difference]: Finished difference Result 2259 states and 3952 transitions. [2023-11-29 01:59:44,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:59:44,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 728 [2023-11-29 01:59:44,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:59:44,644 INFO L225 Difference]: With dead ends: 2259 [2023-11-29 01:59:44,644 INFO L226 Difference]: Without dead ends: 1401 [2023-11-29 01:59:44,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 727 GetRequests, 726 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:59:44,648 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 308 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:59:44,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 1147 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:59:44,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1401 states. [2023-11-29 01:59:44,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1401 to 1397. [2023-11-29 01:59:44,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1397 states, 1094 states have (on average 1.696526508226691) internal successors, (1856), 1096 states have internal predecessors, (1856), 296 states have call successors, (296), 6 states have call predecessors, (296), 6 states have return successors, (296), 294 states have call predecessors, (296), 296 states have call successors, (296) [2023-11-29 01:59:44,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 2448 transitions. [2023-11-29 01:59:44,805 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 2448 transitions. Word has length 728 [2023-11-29 01:59:44,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:59:44,806 INFO L495 AbstractCegarLoop]: Abstraction has 1397 states and 2448 transitions. [2023-11-29 01:59:44,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-29 01:59:44,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 2448 transitions. [2023-11-29 01:59:44,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2023-11-29 01:59:44,816 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:59:44,816 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:59:44,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 01:59:45,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:59:45,017 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:59:45,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:59:45,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1499155832, now seen corresponding path program 1 times [2023-11-29 01:59:45,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:59:45,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640657633] [2023-11-29 01:59:45,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:59:45,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:59:45,098 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:59:45,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [502232130] [2023-11-29 01:59:45,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:59:45,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:59:45,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:59:45,100 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:59:45,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 01:59:45,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:59:45,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:59:45,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:59:45,668 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-11-29 01:59:45,668 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:59:45,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:59:45,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640657633] [2023-11-29 01:59:45,668 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:59:45,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502232130] [2023-11-29 01:59:45,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502232130] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:59:45,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:59:45,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:59:45,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556705538] [2023-11-29 01:59:45,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:59:45,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:59:45,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:59:45,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:59:45,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:59:45,672 INFO L87 Difference]: Start difference. First operand 1397 states and 2448 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-29 01:59:45,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:59:45,815 INFO L93 Difference]: Finished difference Result 3595 states and 6234 transitions. [2023-11-29 01:59:45,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:59:45,816 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 729 [2023-11-29 01:59:45,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:59:45,835 INFO L225 Difference]: With dead ends: 3595 [2023-11-29 01:59:45,835 INFO L226 Difference]: Without dead ends: 2199 [2023-11-29 01:59:45,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 728 GetRequests, 727 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:59:45,840 INFO L413 NwaCegarLoop]: 587 mSDtfsCounter, 331 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:59:45,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 1167 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:59:45,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2199 states. [2023-11-29 01:59:46,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2199 to 2195. [2023-11-29 01:59:46,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2195 states, 1636 states have (on average 1.6356968215158925) internal successors, (2676), 1642 states have internal predecessors, (2676), 546 states have call successors, (546), 12 states have call predecessors, (546), 12 states have return successors, (546), 540 states have call predecessors, (546), 546 states have call successors, (546) [2023-11-29 01:59:46,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2195 states to 2195 states and 3768 transitions. [2023-11-29 01:59:46,102 INFO L78 Accepts]: Start accepts. Automaton has 2195 states and 3768 transitions. Word has length 729 [2023-11-29 01:59:46,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:59:46,103 INFO L495 AbstractCegarLoop]: Abstraction has 2195 states and 3768 transitions. [2023-11-29 01:59:46,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-29 01:59:46,104 INFO L276 IsEmpty]: Start isEmpty. Operand 2195 states and 3768 transitions. [2023-11-29 01:59:46,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2023-11-29 01:59:46,113 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:59:46,113 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:59:46,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-29 01:59:46,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:59:46,314 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:59:46,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:59:46,315 INFO L85 PathProgramCache]: Analyzing trace with hash -306282502, now seen corresponding path program 1 times [2023-11-29 01:59:46,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:59:46,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197248589] [2023-11-29 01:59:46,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:59:46,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:59:46,412 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:59:46,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [597191705] [2023-11-29 01:59:46,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:59:46,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:59:46,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:59:46,416 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:59:46,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 01:59:46,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:59:46,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 1639 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:59:46,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:59:47,106 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 9335 proven. 78 refuted. 0 times theorem prover too weak. 16351 trivial. 0 not checked. [2023-11-29 01:59:47,106 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:59:47,587 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 261 proven. 78 refuted. 0 times theorem prover too weak. 25425 trivial. 0 not checked. [2023-11-29 01:59:47,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:59:47,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197248589] [2023-11-29 01:59:47,588 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:59:47,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597191705] [2023-11-29 01:59:47,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597191705] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:59:47,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:59:47,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 01:59:47,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395941724] [2023-11-29 01:59:47,589 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:59:47,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:59:47,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:59:47,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:59:47,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:59:47,592 INFO L87 Difference]: Start difference. First operand 2195 states and 3768 transitions. Second operand has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 2 states have call successors, (140), 2 states have call predecessors, (140), 4 states have return successors, (141), 2 states have call predecessors, (141), 2 states have call successors, (141) [2023-11-29 01:59:48,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:59:48,576 INFO L93 Difference]: Finished difference Result 4429 states and 7571 transitions. [2023-11-29 01:59:48,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:59:48,577 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 2 states have call successors, (140), 2 states have call predecessors, (140), 4 states have return successors, (141), 2 states have call predecessors, (141), 2 states have call successors, (141) Word has length 729 [2023-11-29 01:59:48,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:59:48,596 INFO L225 Difference]: With dead ends: 4429 [2023-11-29 01:59:48,596 INFO L226 Difference]: Without dead ends: 2235 [2023-11-29 01:59:48,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1460 GetRequests, 1450 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:59:48,605 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 1014 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 380 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1101 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 380 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:59:48,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1101 Valid, 1173 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [380 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 01:59:48,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2235 states. [2023-11-29 01:59:48,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2235 to 2211. [2023-11-29 01:59:48,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2211 states, 1648 states have (on average 1.6189320388349515) internal successors, (2668), 1654 states have internal predecessors, (2668), 546 states have call successors, (546), 16 states have call predecessors, (546), 16 states have return successors, (546), 540 states have call predecessors, (546), 546 states have call successors, (546) [2023-11-29 01:59:48,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2211 states to 2211 states and 3760 transitions. [2023-11-29 01:59:48,908 INFO L78 Accepts]: Start accepts. Automaton has 2211 states and 3760 transitions. Word has length 729 [2023-11-29 01:59:48,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:59:48,910 INFO L495 AbstractCegarLoop]: Abstraction has 2211 states and 3760 transitions. [2023-11-29 01:59:48,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 2 states have call successors, (140), 2 states have call predecessors, (140), 4 states have return successors, (141), 2 states have call predecessors, (141), 2 states have call successors, (141) [2023-11-29 01:59:48,910 INFO L276 IsEmpty]: Start isEmpty. Operand 2211 states and 3760 transitions. [2023-11-29 01:59:48,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2023-11-29 01:59:48,925 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:59:48,926 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:59:48,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 01:59:49,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-29 01:59:49,130 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:59:49,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:59:49,131 INFO L85 PathProgramCache]: Analyzing trace with hash 155220943, now seen corresponding path program 1 times [2023-11-29 01:59:49,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:59:49,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063425218] [2023-11-29 01:59:49,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:59:49,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:59:49,235 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:59:49,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1074407052] [2023-11-29 01:59:49,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:59:49,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:59:49,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:59:49,237 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:59:49,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 01:59:49,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:59:49,661 INFO L262 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 01:59:49,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:59:50,471 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-11-29 01:59:50,471 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:59:50,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:59:50,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063425218] [2023-11-29 01:59:50,472 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:59:50,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074407052] [2023-11-29 01:59:50,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074407052] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:59:50,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:59:50,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:59:50,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629769064] [2023-11-29 01:59:50,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:59:50,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:59:50,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:59:50,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:59:50,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:59:50,476 INFO L87 Difference]: Start difference. First operand 2211 states and 3760 transitions. Second operand has 5 states, 5 states have (on average 32.8) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-29 01:59:51,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:59:51,273 INFO L93 Difference]: Finished difference Result 10915 states and 18548 transitions. [2023-11-29 01:59:51,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:59:51,274 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 731 [2023-11-29 01:59:51,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:59:51,339 INFO L225 Difference]: With dead ends: 10915 [2023-11-29 01:59:51,339 INFO L226 Difference]: Without dead ends: 8705 [2023-11-29 01:59:51,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 730 GetRequests, 727 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:59:51,349 INFO L413 NwaCegarLoop]: 920 mSDtfsCounter, 1594 mSDsluCounter, 1520 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1594 SdHoareTripleChecker+Valid, 2440 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:59:51,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1594 Valid, 2440 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:59:51,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8705 states. [2023-11-29 01:59:52,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8705 to 8699. [2023-11-29 01:59:52,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8699 states, 6450 states have (on average 1.6052713178294573) internal successors, (10354), 6474 states have internal predecessors, (10354), 2184 states have call successors, (2184), 64 states have call predecessors, (2184), 64 states have return successors, (2184), 2160 states have call predecessors, (2184), 2184 states have call successors, (2184) [2023-11-29 01:59:52,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8699 states to 8699 states and 14722 transitions. [2023-11-29 01:59:52,221 INFO L78 Accepts]: Start accepts. Automaton has 8699 states and 14722 transitions. Word has length 731 [2023-11-29 01:59:52,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:59:52,223 INFO L495 AbstractCegarLoop]: Abstraction has 8699 states and 14722 transitions. [2023-11-29 01:59:52,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 4 states have internal predecessors, (164), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-29 01:59:52,224 INFO L276 IsEmpty]: Start isEmpty. Operand 8699 states and 14722 transitions. [2023-11-29 01:59:52,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2023-11-29 01:59:52,245 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:59:52,246 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:59:52,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 01:59:52,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-29 01:59:52,447 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:59:52,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:59:52,447 INFO L85 PathProgramCache]: Analyzing trace with hash 374075661, now seen corresponding path program 1 times [2023-11-29 01:59:52,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:59:52,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068948361] [2023-11-29 01:59:52,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:59:52,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:59:52,544 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:59:52,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1834849954] [2023-11-29 01:59:52,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:59:52,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:59:52,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:59:52,546 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:59:52,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 01:59:52,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:59:52,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 1637 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:59:52,974 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:59:53,347 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 12723 proven. 144 refuted. 0 times theorem prover too weak. 12897 trivial. 0 not checked. [2023-11-29 01:59:53,347 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:59:53,885 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 195 proven. 144 refuted. 0 times theorem prover too weak. 25425 trivial. 0 not checked. [2023-11-29 01:59:53,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:59:53,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068948361] [2023-11-29 01:59:53,886 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:59:53,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834849954] [2023-11-29 01:59:53,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834849954] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:59:53,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:59:53,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-29 01:59:53,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130271170] [2023-11-29 01:59:53,887 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:59:53,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 01:59:53,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:59:53,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 01:59:53,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:59:53,891 INFO L87 Difference]: Start difference. First operand 8699 states and 14722 transitions. Second operand has 12 states, 12 states have (on average 20.5) internal successors, (246), 12 states have internal predecessors, (246), 3 states have call successors, (162), 2 states have call predecessors, (162), 4 states have return successors, (163), 3 states have call predecessors, (163), 3 states have call successors, (163) [2023-11-29 01:59:57,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:59:57,222 INFO L93 Difference]: Finished difference Result 38011 states and 63990 transitions. [2023-11-29 01:59:57,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 01:59:57,223 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 20.5) internal successors, (246), 12 states have internal predecessors, (246), 3 states have call successors, (162), 2 states have call predecessors, (162), 4 states have return successors, (163), 3 states have call predecessors, (163), 3 states have call successors, (163) Word has length 731 [2023-11-29 01:59:57,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:59:57,338 INFO L225 Difference]: With dead ends: 38011 [2023-11-29 01:59:57,338 INFO L226 Difference]: Without dead ends: 29313 [2023-11-29 01:59:57,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1477 GetRequests, 1452 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=471, Unknown=0, NotChecked=0, Total=702 [2023-11-29 01:59:57,369 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 1918 mSDsluCounter, 1964 mSDsCounter, 0 mSdLazyCounter, 1831 mSolverCounterSat, 699 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2048 SdHoareTripleChecker+Valid, 2521 SdHoareTripleChecker+Invalid, 2530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 699 IncrementalHoareTripleChecker+Valid, 1831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:59:57,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2048 Valid, 2521 Invalid, 2530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [699 Valid, 1831 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 01:59:57,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29313 states. [2023-11-29 01:59:59,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29313 to 16203. [2023-11-29 01:59:59,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16203 states, 12322 states have (on average 1.6154844992695991) internal successors, (19906), 12378 states have internal predecessors, (19906), 3768 states have call successors, (3768), 112 states have call predecessors, (3768), 112 states have return successors, (3768), 3712 states have call predecessors, (3768), 3768 states have call successors, (3768) [2023-11-29 01:59:59,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16203 states to 16203 states and 27442 transitions. [2023-11-29 01:59:59,797 INFO L78 Accepts]: Start accepts. Automaton has 16203 states and 27442 transitions. Word has length 731 [2023-11-29 01:59:59,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:59:59,798 INFO L495 AbstractCegarLoop]: Abstraction has 16203 states and 27442 transitions. [2023-11-29 01:59:59,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 20.5) internal successors, (246), 12 states have internal predecessors, (246), 3 states have call successors, (162), 2 states have call predecessors, (162), 4 states have return successors, (163), 3 states have call predecessors, (163), 3 states have call successors, (163) [2023-11-29 01:59:59,798 INFO L276 IsEmpty]: Start isEmpty. Operand 16203 states and 27442 transitions. [2023-11-29 01:59:59,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2023-11-29 01:59:59,816 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:59:59,817 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:59:59,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 02:00:00,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 02:00:00,018 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:00:00,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:00:00,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1316781727, now seen corresponding path program 1 times [2023-11-29 02:00:00,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:00:00,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22419204] [2023-11-29 02:00:00,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:00:00,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:00:00,090 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:00:00,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1451429248] [2023-11-29 02:00:00,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:00:00,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:00:00,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:00:00,092 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:00:00,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 02:00:00,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:00:00,600 INFO L262 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 02:00:00,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:00:01,411 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 14393 proven. 159 refuted. 0 times theorem prover too weak. 11212 trivial. 0 not checked. [2023-11-29 02:00:01,411 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:00:01,733 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 180 proven. 159 refuted. 0 times theorem prover too weak. 25425 trivial. 0 not checked. [2023-11-29 02:00:01,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:00:01,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22419204] [2023-11-29 02:00:01,734 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:00:01,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451429248] [2023-11-29 02:00:01,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451429248] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:00:01,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:00:01,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-29 02:00:01,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183937014] [2023-11-29 02:00:01,735 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:00:01,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:00:01,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:00:01,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:00:01,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:00:01,737 INFO L87 Difference]: Start difference. First operand 16203 states and 27442 transitions. Second operand has 10 states, 10 states have (on average 23.3) internal successors, (233), 10 states have internal predecessors, (233), 5 states have call successors, (167), 3 states have call predecessors, (167), 5 states have return successors, (168), 5 states have call predecessors, (168), 5 states have call successors, (168) [2023-11-29 02:00:03,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:00:03,103 INFO L93 Difference]: Finished difference Result 32821 states and 55235 transitions. [2023-11-29 02:00:03,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 02:00:03,104 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 23.3) internal successors, (233), 10 states have internal predecessors, (233), 5 states have call successors, (167), 3 states have call predecessors, (167), 5 states have return successors, (168), 5 states have call predecessors, (168), 5 states have call successors, (168) Word has length 732 [2023-11-29 02:00:03,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:00:03,145 INFO L225 Difference]: With dead ends: 32821 [2023-11-29 02:00:03,145 INFO L226 Difference]: Without dead ends: 16619 [2023-11-29 02:00:03,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1468 GetRequests, 1454 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=152, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:00:03,183 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 366 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 02:00:03,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 1140 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 02:00:03,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16619 states. [2023-11-29 02:00:04,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16619 to 16459. [2023-11-29 02:00:04,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16459 states, 12514 states have (on average 1.5999680357999042) internal successors, (20022), 12570 states have internal predecessors, (20022), 3768 states have call successors, (3768), 176 states have call predecessors, (3768), 176 states have return successors, (3768), 3712 states have call predecessors, (3768), 3768 states have call successors, (3768) [2023-11-29 02:00:04,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16459 states to 16459 states and 27558 transitions. [2023-11-29 02:00:04,765 INFO L78 Accepts]: Start accepts. Automaton has 16459 states and 27558 transitions. Word has length 732 [2023-11-29 02:00:04,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:00:04,767 INFO L495 AbstractCegarLoop]: Abstraction has 16459 states and 27558 transitions. [2023-11-29 02:00:04,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 23.3) internal successors, (233), 10 states have internal predecessors, (233), 5 states have call successors, (167), 3 states have call predecessors, (167), 5 states have return successors, (168), 5 states have call predecessors, (168), 5 states have call successors, (168) [2023-11-29 02:00:04,767 INFO L276 IsEmpty]: Start isEmpty. Operand 16459 states and 27558 transitions. [2023-11-29 02:00:04,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 733 [2023-11-29 02:00:04,786 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:00:04,787 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:00:04,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 02:00:04,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 02:00:04,987 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:00:04,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:00:04,988 INFO L85 PathProgramCache]: Analyzing trace with hash -429558881, now seen corresponding path program 1 times [2023-11-29 02:00:04,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:00:04,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239991945] [2023-11-29 02:00:04,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:00:04,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:00:05,064 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:00:05,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1037767374] [2023-11-29 02:00:05,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:00:05,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:00:05,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:00:05,066 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:00:05,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 02:00:05,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:00:05,555 INFO L262 TraceCheckSpWp]: Trace formula consists of 1636 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 02:00:05,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:00:05,895 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 11805 proven. 117 refuted. 0 times theorem prover too weak. 13842 trivial. 0 not checked. [2023-11-29 02:00:05,895 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:00:06,338 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 222 proven. 117 refuted. 0 times theorem prover too weak. 25425 trivial. 0 not checked. [2023-11-29 02:00:06,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:00:06,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239991945] [2023-11-29 02:00:06,338 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:00:06,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037767374] [2023-11-29 02:00:06,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037767374] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:00:06,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:00:06,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 02:00:06,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059718578] [2023-11-29 02:00:06,339 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:00:06,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:00:06,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:00:06,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:00:06,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:00:06,342 INFO L87 Difference]: Start difference. First operand 16459 states and 27558 transitions. Second operand has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 2 states have call successors, (153), 2 states have call predecessors, (153), 4 states have return successors, (154), 2 states have call predecessors, (154), 2 states have call successors, (154) [2023-11-29 02:00:07,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:00:07,789 INFO L93 Difference]: Finished difference Result 29445 states and 48771 transitions. [2023-11-29 02:00:07,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 02:00:07,790 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 2 states have call successors, (153), 2 states have call predecessors, (153), 4 states have return successors, (154), 2 states have call predecessors, (154), 2 states have call successors, (154) Word has length 732 [2023-11-29 02:00:07,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:00:07,820 INFO L225 Difference]: With dead ends: 29445 [2023-11-29 02:00:07,820 INFO L226 Difference]: Without dead ends: 12987 [2023-11-29 02:00:07,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1466 GetRequests, 1456 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:00:07,837 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 381 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:00:07,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 1125 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 02:00:07,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12987 states. [2023-11-29 02:00:09,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12987 to 12795. [2023-11-29 02:00:09,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12795 states, 8834 states have (on average 1.5252433778582748) internal successors, (13474), 8890 states have internal predecessors, (13474), 3768 states have call successors, (3768), 192 states have call predecessors, (3768), 192 states have return successors, (3768), 3712 states have call predecessors, (3768), 3768 states have call successors, (3768) [2023-11-29 02:00:09,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12795 states to 12795 states and 21010 transitions. [2023-11-29 02:00:09,070 INFO L78 Accepts]: Start accepts. Automaton has 12795 states and 21010 transitions. Word has length 732 [2023-11-29 02:00:09,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:00:09,071 INFO L495 AbstractCegarLoop]: Abstraction has 12795 states and 21010 transitions. [2023-11-29 02:00:09,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.857142857142858) internal successors, (174), 7 states have internal predecessors, (174), 2 states have call successors, (153), 2 states have call predecessors, (153), 4 states have return successors, (154), 2 states have call predecessors, (154), 2 states have call successors, (154) [2023-11-29 02:00:09,072 INFO L276 IsEmpty]: Start isEmpty. Operand 12795 states and 21010 transitions. [2023-11-29 02:00:09,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2023-11-29 02:00:09,080 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:00:09,080 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:00:09,087 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 02:00:09,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 02:00:09,281 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:00:09,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:00:09,282 INFO L85 PathProgramCache]: Analyzing trace with hash 2144558333, now seen corresponding path program 1 times [2023-11-29 02:00:09,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:00:09,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207281194] [2023-11-29 02:00:09,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:00:09,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:00:09,363 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:00:09,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [993594218] [2023-11-29 02:00:09,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:00:09,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:00:09,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:00:09,366 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:00:09,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 02:00:09,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:00:09,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 1640 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 02:00:09,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:00:10,118 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 7445 proven. 57 refuted. 0 times theorem prover too weak. 18262 trivial. 0 not checked. [2023-11-29 02:00:10,119 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:00:10,409 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 282 proven. 57 refuted. 0 times theorem prover too weak. 25425 trivial. 0 not checked. [2023-11-29 02:00:10,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:00:10,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207281194] [2023-11-29 02:00:10,410 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:00:10,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993594218] [2023-11-29 02:00:10,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993594218] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:00:10,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:00:10,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 02:00:10,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972328691] [2023-11-29 02:00:10,411 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:00:10,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 02:00:10,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:00:10,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 02:00:10,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 02:00:10,414 INFO L87 Difference]: Start difference. First operand 12795 states and 21010 transitions. Second operand has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 2 states have call successors, (133), 2 states have call predecessors, (133), 4 states have return successors, (134), 2 states have call predecessors, (134), 2 states have call successors, (134) [2023-11-29 02:00:12,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:00:12,424 INFO L93 Difference]: Finished difference Result 25829 states and 42251 transitions. [2023-11-29 02:00:12,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 02:00:12,425 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 2 states have call successors, (133), 2 states have call predecessors, (133), 4 states have return successors, (134), 2 states have call predecessors, (134), 2 states have call successors, (134) Word has length 733 [2023-11-29 02:00:12,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:00:12,462 INFO L225 Difference]: With dead ends: 25829 [2023-11-29 02:00:12,462 INFO L226 Difference]: Without dead ends: 13035 [2023-11-29 02:00:12,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1468 GetRequests, 1458 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 02:00:12,494 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 626 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:00:12,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 1138 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 02:00:12,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13035 states. [2023-11-29 02:00:13,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13035 to 12827. [2023-11-29 02:00:13,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12827 states, 8858 states have (on average 1.516595168209528) internal successors, (13434), 8914 states have internal predecessors, (13434), 3768 states have call successors, (3768), 200 states have call predecessors, (3768), 200 states have return successors, (3768), 3712 states have call predecessors, (3768), 3768 states have call successors, (3768) [2023-11-29 02:00:13,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12827 states to 12827 states and 20970 transitions. [2023-11-29 02:00:13,994 INFO L78 Accepts]: Start accepts. Automaton has 12827 states and 20970 transitions. Word has length 733 [2023-11-29 02:00:13,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:00:13,995 INFO L495 AbstractCegarLoop]: Abstraction has 12827 states and 20970 transitions. [2023-11-29 02:00:13,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.0) internal successors, (175), 7 states have internal predecessors, (175), 2 states have call successors, (133), 2 states have call predecessors, (133), 4 states have return successors, (134), 2 states have call predecessors, (134), 2 states have call successors, (134) [2023-11-29 02:00:13,995 INFO L276 IsEmpty]: Start isEmpty. Operand 12827 states and 20970 transitions. [2023-11-29 02:00:14,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2023-11-29 02:00:14,003 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:00:14,004 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:00:14,011 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 02:00:14,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 02:00:14,205 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:00:14,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:00:14,205 INFO L85 PathProgramCache]: Analyzing trace with hash -2009860353, now seen corresponding path program 1 times [2023-11-29 02:00:14,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:00:14,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894480305] [2023-11-29 02:00:14,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:00:14,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:00:14,265 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:00:14,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2054669966] [2023-11-29 02:00:14,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:00:14,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:00:14,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:00:14,267 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:00:14,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 02:00:14,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:00:14,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 1639 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 02:00:14,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:00:14,745 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-11-29 02:00:14,745 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:00:14,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:00:14,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894480305] [2023-11-29 02:00:14,746 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:00:14,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054669966] [2023-11-29 02:00:14,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054669966] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:00:14,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:00:14,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:00:14,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233567452] [2023-11-29 02:00:14,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:00:14,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:00:14,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:00:14,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:00:14,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:00:14,750 INFO L87 Difference]: Start difference. First operand 12827 states and 20970 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-29 02:00:16,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:00:16,785 INFO L93 Difference]: Finished difference Result 34647 states and 56100 transitions. [2023-11-29 02:00:16,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:00:16,785 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 733 [2023-11-29 02:00:16,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:00:16,835 INFO L225 Difference]: With dead ends: 34647 [2023-11-29 02:00:16,835 INFO L226 Difference]: Without dead ends: 21757 [2023-11-29 02:00:16,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 730 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:00:16,868 INFO L413 NwaCegarLoop]: 813 mSDtfsCounter, 310 mSDsluCounter, 1189 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 310 SdHoareTripleChecker+Valid, 2002 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 02:00:16,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [310 Valid, 2002 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 02:00:16,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21757 states. [2023-11-29 02:00:19,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21757 to 21747. [2023-11-29 02:00:19,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21747 states, 13986 states have (on average 1.4484484484484486) internal successors, (20258), 14106 states have internal predecessors, (20258), 7368 states have call successors, (7368), 392 states have call predecessors, (7368), 392 states have return successors, (7368), 7248 states have call predecessors, (7368), 7368 states have call successors, (7368) [2023-11-29 02:00:19,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21747 states to 21747 states and 34994 transitions. [2023-11-29 02:00:19,591 INFO L78 Accepts]: Start accepts. Automaton has 21747 states and 34994 transitions. Word has length 733 [2023-11-29 02:00:19,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:00:19,592 INFO L495 AbstractCegarLoop]: Abstraction has 21747 states and 34994 transitions. [2023-11-29 02:00:19,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-29 02:00:19,592 INFO L276 IsEmpty]: Start isEmpty. Operand 21747 states and 34994 transitions. [2023-11-29 02:00:19,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2023-11-29 02:00:19,613 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:00:19,614 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:00:19,621 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 02:00:19,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 02:00:19,815 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:00:19,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:00:19,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1947820739, now seen corresponding path program 1 times [2023-11-29 02:00:19,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:00:19,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662843156] [2023-11-29 02:00:19,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:00:19,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:00:19,892 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:00:19,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1564728865] [2023-11-29 02:00:19,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:00:19,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:00:19,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:00:19,894 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:00:19,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 02:00:20,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:00:20,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 1640 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 02:00:20,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:00:21,320 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-11-29 02:00:21,320 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:00:21,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:00:21,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662843156] [2023-11-29 02:00:21,320 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:00:21,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564728865] [2023-11-29 02:00:21,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564728865] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:00:21,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:00:21,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 02:00:21,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185895724] [2023-11-29 02:00:21,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:00:21,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 02:00:21,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:00:21,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 02:00:21,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-29 02:00:21,324 INFO L87 Difference]: Start difference. First operand 21747 states and 34994 transitions. Second operand has 8 states, 8 states have (on average 20.75) internal successors, (166), 7 states have internal predecessors, (166), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-29 02:00:31,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:00:31,486 INFO L93 Difference]: Finished difference Result 89965 states and 144173 transitions. [2023-11-29 02:00:31,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 02:00:31,486 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.75) internal successors, (166), 7 states have internal predecessors, (166), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 733 [2023-11-29 02:00:31,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:00:31,647 INFO L225 Difference]: With dead ends: 89965 [2023-11-29 02:00:31,647 INFO L226 Difference]: Without dead ends: 67243 [2023-11-29 02:00:31,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 739 GetRequests, 726 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2023-11-29 02:00:31,694 INFO L413 NwaCegarLoop]: 792 mSDtfsCounter, 2019 mSDsluCounter, 2918 mSDsCounter, 0 mSdLazyCounter, 1922 mSolverCounterSat, 1199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2019 SdHoareTripleChecker+Valid, 3710 SdHoareTripleChecker+Invalid, 3121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1199 IncrementalHoareTripleChecker+Valid, 1922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-29 02:00:31,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2019 Valid, 3710 Invalid, 3121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1199 Valid, 1922 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-29 02:00:31,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67243 states. [2023-11-29 02:00:37,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67243 to 35955. [2023-11-29 02:00:37,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35955 states, 24194 states have (on average 1.477473753823262) internal successors, (35746), 24370 states have internal predecessors, (35746), 11152 states have call successors, (11152), 608 states have call predecessors, (11152), 608 states have return successors, (11152), 10976 states have call predecessors, (11152), 11152 states have call successors, (11152) [2023-11-29 02:00:37,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35955 states to 35955 states and 58050 transitions. [2023-11-29 02:00:37,354 INFO L78 Accepts]: Start accepts. Automaton has 35955 states and 58050 transitions. Word has length 733 [2023-11-29 02:00:37,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:00:37,356 INFO L495 AbstractCegarLoop]: Abstraction has 35955 states and 58050 transitions. [2023-11-29 02:00:37,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.75) internal successors, (166), 7 states have internal predecessors, (166), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-29 02:00:37,356 INFO L276 IsEmpty]: Start isEmpty. Operand 35955 states and 58050 transitions. [2023-11-29 02:00:37,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2023-11-29 02:00:37,378 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:00:37,378 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:00:37,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 02:00:37,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 02:00:37,579 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:00:37,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:00:37,580 INFO L85 PathProgramCache]: Analyzing trace with hash 977586109, now seen corresponding path program 1 times [2023-11-29 02:00:37,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:00:37,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783966091] [2023-11-29 02:00:37,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:00:37,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:00:37,636 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:00:37,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [61884179] [2023-11-29 02:00:37,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:00:37,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:00:37,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:00:37,638 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:00:37,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 02:00:38,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:00:38,074 INFO L262 TraceCheckSpWp]: Trace formula consists of 1636 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 02:00:38,081 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:00:38,143 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-11-29 02:00:38,144 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:00:38,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:00:38,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783966091] [2023-11-29 02:00:38,144 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:00:38,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61884179] [2023-11-29 02:00:38,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61884179] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:00:38,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:00:38,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:00:38,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493227283] [2023-11-29 02:00:38,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:00:38,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:00:38,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:00:38,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:00:38,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:00:38,147 INFO L87 Difference]: Start difference. First operand 35955 states and 58050 transitions. Second operand has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-29 02:00:41,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:00:41,816 INFO L93 Difference]: Finished difference Result 72815 states and 117780 transitions. [2023-11-29 02:00:41,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:00:41,817 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 733 [2023-11-29 02:00:41,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:00:41,897 INFO L225 Difference]: With dead ends: 72815 [2023-11-29 02:00:41,897 INFO L226 Difference]: Without dead ends: 36749 [2023-11-29 02:00:41,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 731 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:00:41,955 INFO L413 NwaCegarLoop]: 1042 mSDtfsCounter, 546 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 546 SdHoareTripleChecker+Valid, 1613 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:00:41,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [546 Valid, 1613 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:00:41,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36749 states. [2023-11-29 02:00:47,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36749 to 36283. [2023-11-29 02:00:47,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36283 states, 24522 states have (on average 1.4776119402985075) internal successors, (36234), 24698 states have internal predecessors, (36234), 11152 states have call successors, (11152), 608 states have call predecessors, (11152), 608 states have return successors, (11152), 10976 states have call predecessors, (11152), 11152 states have call successors, (11152) [2023-11-29 02:00:47,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36283 states to 36283 states and 58538 transitions. [2023-11-29 02:00:47,343 INFO L78 Accepts]: Start accepts. Automaton has 36283 states and 58538 transitions. Word has length 733 [2023-11-29 02:00:47,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:00:47,344 INFO L495 AbstractCegarLoop]: Abstraction has 36283 states and 58538 transitions. [2023-11-29 02:00:47,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.333333333333336) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-29 02:00:47,344 INFO L276 IsEmpty]: Start isEmpty. Operand 36283 states and 58538 transitions. [2023-11-29 02:00:47,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2023-11-29 02:00:47,357 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:00:47,357 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:00:47,364 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 02:00:47,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 02:00:47,558 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:00:47,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:00:47,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1111599615, now seen corresponding path program 1 times [2023-11-29 02:00:47,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:00:47,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480784065] [2023-11-29 02:00:47,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:00:47,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:00:47,626 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:00:47,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [117662208] [2023-11-29 02:00:47,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:00:47,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:00:47,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:00:47,628 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:00:47,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 02:00:48,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:00:48,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 1637 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 02:00:48,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:00:49,904 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-11-29 02:00:49,904 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:00:49,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:00:49,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480784065] [2023-11-29 02:00:49,905 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:00:49,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117662208] [2023-11-29 02:00:49,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117662208] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:00:49,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:00:49,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 02:00:49,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972730888] [2023-11-29 02:00:49,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:00:49,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:00:49,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:00:49,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:00:49,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:00:49,907 INFO L87 Difference]: Start difference. First operand 36283 states and 58538 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-29 02:00:55,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:00:55,386 INFO L93 Difference]: Finished difference Result 86862 states and 140459 transitions. [2023-11-29 02:00:55,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:00:55,387 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 733 [2023-11-29 02:00:55,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:00:55,498 INFO L225 Difference]: With dead ends: 86862 [2023-11-29 02:00:55,498 INFO L226 Difference]: Without dead ends: 50580 [2023-11-29 02:00:55,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 730 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:00:55,566 INFO L413 NwaCegarLoop]: 614 mSDtfsCounter, 987 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:00:55,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [987 Valid, 1527 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 02:00:55,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50580 states. [2023-11-29 02:01:02,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50580 to 50072. [2023-11-29 02:01:02,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50072 states, 34201 states have (on average 1.4856875529955265) internal successors, (50812), 34433 states have internal predecessors, (50812), 15042 states have call successors, (15042), 828 states have call predecessors, (15042), 828 states have return successors, (15042), 14810 states have call predecessors, (15042), 15042 states have call successors, (15042) [2023-11-29 02:01:02,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50072 states to 50072 states and 80896 transitions. [2023-11-29 02:01:02,507 INFO L78 Accepts]: Start accepts. Automaton has 50072 states and 80896 transitions. Word has length 733 [2023-11-29 02:01:02,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:01:02,508 INFO L495 AbstractCegarLoop]: Abstraction has 50072 states and 80896 transitions. [2023-11-29 02:01:02,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 3 states have internal predecessors, (166), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-29 02:01:02,508 INFO L276 IsEmpty]: Start isEmpty. Operand 50072 states and 80896 transitions. [2023-11-29 02:01:02,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2023-11-29 02:01:02,525 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:01:02,526 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:01:02,533 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 02:01:02,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 02:01:02,726 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:01:02,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:01:02,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1322179261, now seen corresponding path program 1 times [2023-11-29 02:01:02,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:01:02,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392934643] [2023-11-29 02:01:02,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:01:02,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:01:02,788 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:01:02,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1884698131] [2023-11-29 02:01:02,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:01:02,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:01:02,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:01:02,790 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:01:02,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 02:01:03,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:03,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 1635 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 02:01:03,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:01:03,385 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-11-29 02:01:03,385 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:01:03,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:01:03,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392934643] [2023-11-29 02:01:03,386 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:01:03,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884698131] [2023-11-29 02:01:03,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884698131] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:01:03,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:01:03,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:01:03,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197634884] [2023-11-29 02:01:03,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:01:03,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 02:01:03,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:01:03,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 02:01:03,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:01:03,389 INFO L87 Difference]: Start difference. First operand 50072 states and 80896 transitions. Second operand has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-29 02:01:11,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:01:11,077 INFO L93 Difference]: Finished difference Result 130470 states and 212030 transitions. [2023-11-29 02:01:11,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 02:01:11,078 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 733 [2023-11-29 02:01:11,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:01:11,246 INFO L225 Difference]: With dead ends: 130470 [2023-11-29 02:01:11,246 INFO L226 Difference]: Without dead ends: 80808 [2023-11-29 02:01:11,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 730 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 02:01:11,325 INFO L413 NwaCegarLoop]: 842 mSDtfsCounter, 318 mSDsluCounter, 1310 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 2152 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 02:01:11,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 2152 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 02:01:11,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80808 states. [2023-11-29 02:01:19,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80808 to 80525. [2023-11-29 02:01:19,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80525 states, 60558 states have (on average 1.5477723835001156) internal successors, (93730), 61046 states have internal predecessors, (93730), 18882 states have call successors, (18882), 1084 states have call predecessors, (18882), 1084 states have return successors, (18882), 18394 states have call predecessors, (18882), 18882 states have call successors, (18882) [2023-11-29 02:01:20,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80525 states to 80525 states and 131494 transitions. [2023-11-29 02:01:20,345 INFO L78 Accepts]: Start accepts. Automaton has 80525 states and 131494 transitions. Word has length 733 [2023-11-29 02:01:20,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:01:20,346 INFO L495 AbstractCegarLoop]: Abstraction has 80525 states and 131494 transitions. [2023-11-29 02:01:20,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.5) internal successors, (166), 4 states have internal predecessors, (166), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-29 02:01:20,347 INFO L276 IsEmpty]: Start isEmpty. Operand 80525 states and 131494 transitions. [2023-11-29 02:01:20,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 734 [2023-11-29 02:01:20,366 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:01:20,366 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:01:20,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 02:01:20,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 02:01:20,567 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:01:20,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:01:20,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1066384769, now seen corresponding path program 1 times [2023-11-29 02:01:20,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:01:20,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899226743] [2023-11-29 02:01:20,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:01:20,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:01:20,618 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:01:20,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1321236282] [2023-11-29 02:01:20,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:01:20,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:01:20,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:01:20,619 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:01:20,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 02:01:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:21,055 INFO L262 TraceCheckSpWp]: Trace formula consists of 1635 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 02:01:21,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:01:21,319 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 2927 proven. 18 refuted. 0 times theorem prover too weak. 22819 trivial. 0 not checked. [2023-11-29 02:01:21,320 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:01:21,746 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 321 proven. 18 refuted. 0 times theorem prover too weak. 25425 trivial. 0 not checked. [2023-11-29 02:01:21,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:01:21,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899226743] [2023-11-29 02:01:21,746 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:01:21,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321236282] [2023-11-29 02:01:21,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321236282] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:01:21,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:01:21,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-29 02:01:21,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545672600] [2023-11-29 02:01:21,747 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:01:21,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 02:01:21,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:01:21,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 02:01:21,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-11-29 02:01:21,750 INFO L87 Difference]: Start difference. First operand 80525 states and 131494 transitions. Second operand has 10 states, 10 states have (on average 24.6) internal successors, (246), 10 states have internal predecessors, (246), 5 states have call successors, (120), 3 states have call predecessors, (120), 5 states have return successors, (121), 5 states have call predecessors, (121), 5 states have call successors, (121) [2023-11-29 02:01:30,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:01:30,885 INFO L93 Difference]: Finished difference Result 161703 states and 262901 transitions. [2023-11-29 02:01:30,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 02:01:30,886 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 24.6) internal successors, (246), 10 states have internal predecessors, (246), 5 states have call successors, (120), 3 states have call predecessors, (120), 5 states have return successors, (121), 5 states have call predecessors, (121), 5 states have call successors, (121) Word has length 733 [2023-11-29 02:01:30,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:01:31,063 INFO L225 Difference]: With dead ends: 161703 [2023-11-29 02:01:31,063 INFO L226 Difference]: Without dead ends: 82113 [2023-11-29 02:01:31,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1470 GetRequests, 1456 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=152, Unknown=0, NotChecked=0, Total=240 [2023-11-29 02:01:31,184 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 673 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 836 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 02:01:31,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 1144 Invalid, 836 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 02:01:31,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82113 states. [2023-11-29 02:01:40,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82113 to 80725. [2023-11-29 02:01:40,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80725 states, 60708 states have (on average 1.5400935626276602) internal successors, (93496), 61196 states have internal predecessors, (93496), 18882 states have call successors, (18882), 1134 states have call predecessors, (18882), 1134 states have return successors, (18882), 18394 states have call predecessors, (18882), 18882 states have call successors, (18882) [2023-11-29 02:01:40,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80725 states to 80725 states and 131260 transitions. [2023-11-29 02:01:40,376 INFO L78 Accepts]: Start accepts. Automaton has 80725 states and 131260 transitions. Word has length 733 [2023-11-29 02:01:40,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:01:40,377 INFO L495 AbstractCegarLoop]: Abstraction has 80725 states and 131260 transitions. [2023-11-29 02:01:40,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.6) internal successors, (246), 10 states have internal predecessors, (246), 5 states have call successors, (120), 3 states have call predecessors, (120), 5 states have return successors, (121), 5 states have call predecessors, (121), 5 states have call successors, (121) [2023-11-29 02:01:40,377 INFO L276 IsEmpty]: Start isEmpty. Operand 80725 states and 131260 transitions. [2023-11-29 02:01:40,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 735 [2023-11-29 02:01:40,397 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:01:40,398 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:01:40,405 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 02:01:40,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:01:40,598 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:01:40,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:01:40,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1098327253, now seen corresponding path program 1 times [2023-11-29 02:01:40,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:01:40,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816531386] [2023-11-29 02:01:40,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:01:40,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:01:40,656 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:01:40,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1130651964] [2023-11-29 02:01:40,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:01:40,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:01:40,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:01:40,657 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:01:40,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 02:01:41,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:01:41,177 INFO L262 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 02:01:41,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:01:43,111 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 13460 proven. 219 refuted. 0 times theorem prover too weak. 12085 trivial. 0 not checked. [2023-11-29 02:01:43,112 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 02:01:44,407 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 120 proven. 219 refuted. 0 times theorem prover too weak. 25425 trivial. 0 not checked. [2023-11-29 02:01:44,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:01:44,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816531386] [2023-11-29 02:01:44,408 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:01:44,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130651964] [2023-11-29 02:01:44,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130651964] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 02:01:44,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 02:01:44,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 18 [2023-11-29 02:01:44,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114384751] [2023-11-29 02:01:44,408 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 02:01:44,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 02:01:44,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:01:44,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 02:01:44,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2023-11-29 02:01:44,411 INFO L87 Difference]: Start difference. First operand 80725 states and 131260 transitions. Second operand has 18 states, 18 states have (on average 15.833333333333334) internal successors, (285), 18 states have internal predecessors, (285), 5 states have call successors, (205), 3 states have call predecessors, (205), 5 states have return successors, (205), 5 states have call predecessors, (205), 5 states have call successors, (205) [2023-11-29 02:03:11,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:03:11,563 INFO L93 Difference]: Finished difference Result 870843 states and 1412117 transitions. [2023-11-29 02:03:11,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-11-29 02:03:11,563 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 15.833333333333334) internal successors, (285), 18 states have internal predecessors, (285), 5 states have call successors, (205), 3 states have call predecessors, (205), 5 states have return successors, (205), 5 states have call predecessors, (205), 5 states have call successors, (205) Word has length 734 [2023-11-29 02:03:11,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:03:13,697 INFO L225 Difference]: With dead ends: 870843 [2023-11-29 02:03:13,697 INFO L226 Difference]: Without dead ends: 790615 [2023-11-29 02:03:13,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1542 GetRequests, 1464 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2021 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1673, Invalid=4647, Unknown=0, NotChecked=0, Total=6320 [2023-11-29 02:03:13,983 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 6868 mSDsluCounter, 5029 mSDsCounter, 0 mSdLazyCounter, 2880 mSolverCounterSat, 1405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6908 SdHoareTripleChecker+Valid, 5451 SdHoareTripleChecker+Invalid, 4285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1405 IncrementalHoareTripleChecker+Valid, 2880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:03:13,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6908 Valid, 5451 Invalid, 4285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1405 Valid, 2880 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-29 02:03:14,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790615 states. [2023-11-29 02:04:11,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790615 to 448529. [2023-11-29 02:04:11,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448529 states, 368220 states have (on average 1.5839362337732876) internal successors, (583237), 371780 states have internal predecessors, (583237), 75714 states have call successors, (75714), 4594 states have call predecessors, (75714), 4594 states have return successors, (75714), 72154 states have call predecessors, (75714), 75714 states have call successors, (75714) [2023-11-29 02:04:14,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448529 states to 448529 states and 734665 transitions. [2023-11-29 02:04:14,199 INFO L78 Accepts]: Start accepts. Automaton has 448529 states and 734665 transitions. Word has length 734 [2023-11-29 02:04:14,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:04:14,201 INFO L495 AbstractCegarLoop]: Abstraction has 448529 states and 734665 transitions. [2023-11-29 02:04:14,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 15.833333333333334) internal successors, (285), 18 states have internal predecessors, (285), 5 states have call successors, (205), 3 states have call predecessors, (205), 5 states have return successors, (205), 5 states have call predecessors, (205), 5 states have call successors, (205) [2023-11-29 02:04:14,201 INFO L276 IsEmpty]: Start isEmpty. Operand 448529 states and 734665 transitions. [2023-11-29 02:04:14,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 735 [2023-11-29 02:04:14,365 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:04:14,365 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:04:14,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 02:04:14,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:04:14,566 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:04:14,566 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:04:14,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1561912875, now seen corresponding path program 1 times [2023-11-29 02:04:14,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:04:14,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390667962] [2023-11-29 02:04:14,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:04:14,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:04:14,634 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:04:14,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [776718609] [2023-11-29 02:04:14,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:04:14,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:04:14,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:04:14,636 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:04:14,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 02:04:15,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:04:15,153 INFO L262 TraceCheckSpWp]: Trace formula consists of 1640 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:04:15,161 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:04:15,818 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-11-29 02:04:15,819 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:04:15,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:04:15,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390667962] [2023-11-29 02:04:15,819 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:04:15,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776718609] [2023-11-29 02:04:15,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776718609] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:04:15,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:04:15,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:04:15,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945825980] [2023-11-29 02:04:15,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:04:15,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:04:15,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:04:15,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:04:15,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:04:15,822 INFO L87 Difference]: Start difference. First operand 448529 states and 734665 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-29 02:05:53,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:05:53,477 INFO L93 Difference]: Finished difference Result 1341429 states and 2196599 transitions. [2023-11-29 02:05:53,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 02:05:53,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 734 [2023-11-29 02:05:53,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:05:56,071 INFO L225 Difference]: With dead ends: 1341429 [2023-11-29 02:05:56,071 INFO L226 Difference]: Without dead ends: 896599 [2023-11-29 02:05:56,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 733 GetRequests, 732 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:05:56,716 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 236 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 02:05:56,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 1134 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 02:05:57,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896599 states. [2023-11-29 02:07:40,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896599 to 896597. [2023-11-29 02:07:41,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896597 states, 736112 states have (on average 1.580581487599713) internal successors, (1163485), 743232 states have internal predecessors, (1163485), 151314 states have call successors, (151314), 9170 states have call predecessors, (151314), 9170 states have return successors, (151314), 144194 states have call predecessors, (151314), 151314 states have call successors, (151314) [2023-11-29 02:07:45,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896597 states to 896597 states and 1466113 transitions. [2023-11-29 02:07:45,492 INFO L78 Accepts]: Start accepts. Automaton has 896597 states and 1466113 transitions. Word has length 734 [2023-11-29 02:07:45,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:07:45,493 INFO L495 AbstractCegarLoop]: Abstraction has 896597 states and 1466113 transitions. [2023-11-29 02:07:45,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-29 02:07:45,493 INFO L276 IsEmpty]: Start isEmpty. Operand 896597 states and 1466113 transitions. [2023-11-29 02:07:45,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 735 [2023-11-29 02:07:45,816 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:07:45,816 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:07:45,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-29 02:07:46,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:07:46,017 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:07:46,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:07:46,018 INFO L85 PathProgramCache]: Analyzing trace with hash 937776232, now seen corresponding path program 1 times [2023-11-29 02:07:46,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:07:46,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033777250] [2023-11-29 02:07:46,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:07:46,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:07:46,071 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:07:46,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [514671937] [2023-11-29 02:07:46,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:07:46,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:07:46,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:07:46,073 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:07:46,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 02:07:46,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:07:46,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 1642 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 02:07:46,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:07:47,117 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-11-29 02:07:47,117 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:07:47,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:07:47,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033777250] [2023-11-29 02:07:47,117 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:07:47,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514671937] [2023-11-29 02:07:47,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514671937] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:07:47,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:07:47,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 02:07:47,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091461335] [2023-11-29 02:07:47,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:07:47,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 02:07:47,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:07:47,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 02:07:47,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 02:07:47,119 INFO L87 Difference]: Start difference. First operand 896597 states and 1466113 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-29 02:09:23,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 02:09:23,409 INFO L93 Difference]: Finished difference Result 1341575 states and 2194536 transitions. [2023-11-29 02:09:23,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 02:09:23,410 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) Word has length 734 [2023-11-29 02:09:23,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 02:09:25,665 INFO L225 Difference]: With dead ends: 1341575 [2023-11-29 02:09:25,666 INFO L226 Difference]: Without dead ends: 896745 [2023-11-29 02:09:26,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 734 GetRequests, 730 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-29 02:09:26,540 INFO L413 NwaCegarLoop]: 991 mSDtfsCounter, 1169 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1169 SdHoareTripleChecker+Valid, 2071 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 02:09:26,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1169 Valid, 2071 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 02:09:27,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896745 states. [2023-11-29 02:11:11,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896745 to 896597. [2023-11-29 02:11:12,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896597 states, 736112 states have (on average 1.578755678483709) internal successors, (1162141), 743232 states have internal predecessors, (1162141), 151314 states have call successors, (151314), 9170 states have call predecessors, (151314), 9170 states have return successors, (151314), 144194 states have call predecessors, (151314), 151314 states have call successors, (151314) [2023-11-29 02:11:16,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896597 states to 896597 states and 1464769 transitions. [2023-11-29 02:11:16,683 INFO L78 Accepts]: Start accepts. Automaton has 896597 states and 1464769 transitions. Word has length 734 [2023-11-29 02:11:16,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 02:11:16,684 INFO L495 AbstractCegarLoop]: Abstraction has 896597 states and 1464769 transitions. [2023-11-29 02:11:16,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114) [2023-11-29 02:11:16,685 INFO L276 IsEmpty]: Start isEmpty. Operand 896597 states and 1464769 transitions. [2023-11-29 02:11:17,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 735 [2023-11-29 02:11:17,033 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 02:11:17,033 INFO L195 NwaCegarLoop]: trace histogram [114, 114, 114, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 02:11:17,041 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 02:11:17,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:17,234 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 02:11:17,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 02:11:17,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1511823898, now seen corresponding path program 1 times [2023-11-29 02:11:17,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 02:11:17,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386027735] [2023-11-29 02:11:17,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:17,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 02:11:17,303 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 02:11:17,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1375807719] [2023-11-29 02:11:17,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 02:11:17,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 02:11:17,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 02:11:17,305 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 02:11:17,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5261a8d1-28d5-42e6-b466-079e35f24aec/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 02:11:17,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 02:11:17,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 1643 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 02:11:17,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 02:11:18,925 INFO L134 CoverageAnalysis]: Checked inductivity of 25764 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25764 trivial. 0 not checked. [2023-11-29 02:11:18,925 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 02:11:18,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 02:11:18,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386027735] [2023-11-29 02:11:18,926 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 02:11:18,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1375807719] [2023-11-29 02:11:18,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1375807719] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 02:11:18,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 02:11:18,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 02:11:18,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670351825] [2023-11-29 02:11:18,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 02:11:18,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 02:11:18,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 02:11:18,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 02:11:18,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 02:11:18,929 INFO L87 Difference]: Start difference. First operand 896597 states and 1464769 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 1 states have call successors, (114), 1 states have call predecessors, (114), 1 states have return successors, (114), 1 states have call predecessors, (114), 1 states have call successors, (114)