./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-13.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/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_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-13.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/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_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/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 d5194ca2a271eb4c42f992f5d7dece7ecd9a6b07ea3e315005d3dcdd4e1a968f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 05:07:58,237 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 05:07:58,300 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 05:07:58,305 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 05:07:58,305 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 05:07:58,330 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 05:07:58,330 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 05:07:58,331 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 05:07:58,331 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 05:07:58,332 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 05:07:58,332 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 05:07:58,333 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 05:07:58,334 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 05:07:58,334 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 05:07:58,335 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 05:07:58,335 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 05:07:58,336 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 05:07:58,336 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 05:07:58,337 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 05:07:58,337 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 05:07:58,338 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 05:07:58,340 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 05:07:58,341 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 05:07:58,341 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 05:07:58,342 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 05:07:58,342 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 05:07:58,343 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 05:07:58,343 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 05:07:58,343 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 05:07:58,344 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 05:07:58,344 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 05:07:58,344 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:07:58,345 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 05:07:58,345 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 05:07:58,345 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 05:07:58,345 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 05:07:58,345 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 05:07:58,346 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 05:07:58,346 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 05:07:58,346 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 05:07:58,346 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 05:07:58,347 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 05:07:58,347 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_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d5194ca2a271eb4c42f992f5d7dece7ecd9a6b07ea3e315005d3dcdd4e1a968f [2023-11-29 05:07:58,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 05:07:58,581 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 05:07:58,583 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 05:07:58,584 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 05:07:58,584 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 05:07:58,585 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-13.i [2023-11-29 05:08:01,317 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 05:08:01,563 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 05:08:01,564 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-13.i [2023-11-29 05:08:01,578 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/data/f84aad46d/0b42096db7ce41e29218cea9da750a6d/FLAG6dda48eb3 [2023-11-29 05:08:01,590 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/data/f84aad46d/0b42096db7ce41e29218cea9da750a6d [2023-11-29 05:08:01,592 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 05:08:01,594 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 05:08:01,595 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 05:08:01,595 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 05:08:01,599 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 05:08:01,600 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:08:01" (1/1) ... [2023-11-29 05:08:01,601 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6398564f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:08:01, skipping insertion in model container [2023-11-29 05:08:01,601 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 05:08:01" (1/1) ... [2023-11-29 05:08:01,657 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 05:08:01,774 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_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-13.i[916,929] [2023-11-29 05:08:01,982 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:08:01,999 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 05:08:02,011 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_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-13.i[916,929] [2023-11-29 05:08:02,125 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 05:08:02,144 INFO L206 MainTranslator]: Completed translation [2023-11-29 05:08:02,144 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:08:02 WrapperNode [2023-11-29 05:08:02,144 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 05:08:02,145 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 05:08:02,145 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 05:08:02,145 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 05:08:02,151 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:08:02" (1/1) ... [2023-11-29 05:08:02,177 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:08:02" (1/1) ... [2023-11-29 05:08:02,303 INFO L138 Inliner]: procedures = 26, calls = 92, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 722 [2023-11-29 05:08:02,303 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 05:08:02,304 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 05:08:02,304 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 05:08:02,304 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 05:08:02,316 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:08:02" (1/1) ... [2023-11-29 05:08:02,316 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:08:02" (1/1) ... [2023-11-29 05:08:02,329 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:08:02" (1/1) ... [2023-11-29 05:08:02,386 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 05:08:02,386 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:08:02" (1/1) ... [2023-11-29 05:08:02,386 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:08:02" (1/1) ... [2023-11-29 05:08:02,417 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:08:02" (1/1) ... [2023-11-29 05:08:02,424 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:08:02" (1/1) ... [2023-11-29 05:08:02,440 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:08:02" (1/1) ... [2023-11-29 05:08:02,445 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:08:02" (1/1) ... [2023-11-29 05:08:02,464 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 05:08:02,464 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 05:08:02,465 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 05:08:02,465 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 05:08:02,465 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:08:02" (1/1) ... [2023-11-29 05:08:02,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 05:08:02,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:08:02,492 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 05:08:02,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 05:08:02,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 05:08:02,525 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 05:08:02,526 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 05:08:02,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 05:08:02,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 05:08:02,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 05:08:02,662 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 05:08:02,664 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 05:08:03,630 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 05:08:03,687 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 05:08:03,687 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 05:08:03,687 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:08:03 BoogieIcfgContainer [2023-11-29 05:08:03,687 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 05:08:03,690 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 05:08:03,690 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 05:08:03,706 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 05:08:03,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 05:08:01" (1/3) ... [2023-11-29 05:08:03,707 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bb84aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:08:03, skipping insertion in model container [2023-11-29 05:08:03,707 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 05:08:02" (2/3) ... [2023-11-29 05:08:03,708 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bb84aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 05:08:03, skipping insertion in model container [2023-11-29 05:08:03,708 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 05:08:03" (3/3) ... [2023-11-29 05:08:03,709 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-13.i [2023-11-29 05:08:03,728 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 05:08:03,728 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 05:08:03,780 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 05:08:03,787 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;@55d5cee2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 05:08:03,787 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 05:08:03,793 INFO L276 IsEmpty]: Start isEmpty. Operand has 279 states, 197 states have (on average 1.5939086294416243) internal successors, (314), 198 states have internal predecessors, (314), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2023-11-29 05:08:03,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2023-11-29 05:08:03,824 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:08:03,825 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:08:03,826 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:08:03,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:08:03,832 INFO L85 PathProgramCache]: Analyzing trace with hash -320492981, now seen corresponding path program 1 times [2023-11-29 05:08:03,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:08:03,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579408291] [2023-11-29 05:08:03,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:03,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:08:04,111 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:08:04,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1504612972] [2023-11-29 05:08:04,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:04,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:08:04,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:08:04,114 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:08:04,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 05:08:04,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:08:04,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 1290 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 05:08:04,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:08:05,296 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-11-29 05:08:05,296 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:08:05,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:08:05,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579408291] [2023-11-29 05:08:05,297 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:08:05,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504612972] [2023-11-29 05:08:05,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504612972] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:08:05,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:08:05,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:08:05,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239678721] [2023-11-29 05:08:05,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:08:05,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:08:05,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:08:05,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:08:05,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:08:05,332 INFO L87 Difference]: Start difference. First operand has 279 states, 197 states have (on average 1.5939086294416243) internal successors, (314), 198 states have internal predecessors, (314), 79 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-11-29 05:08:05,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:08:05,910 INFO L93 Difference]: Finished difference Result 828 states and 1565 transitions. [2023-11-29 05:08:05,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:08:05,913 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 527 [2023-11-29 05:08:05,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:08:05,933 INFO L225 Difference]: With dead ends: 828 [2023-11-29 05:08:05,933 INFO L226 Difference]: Without dead ends: 550 [2023-11-29 05:08:05,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 523 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:08:05,952 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 561 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 1462 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:08:05,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [561 Valid, 1462 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 05:08:05,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2023-11-29 05:08:06,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 407. [2023-11-29 05:08:06,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 246 states have (on average 1.4552845528455285) internal successors, (358), 246 states have internal predecessors, (358), 158 states have call successors, (158), 2 states have call predecessors, (158), 2 states have return successors, (158), 158 states have call predecessors, (158), 158 states have call successors, (158) [2023-11-29 05:08:06,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 674 transitions. [2023-11-29 05:08:06,111 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 674 transitions. Word has length 527 [2023-11-29 05:08:06,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:08:06,114 INFO L495 AbstractCegarLoop]: Abstraction has 407 states and 674 transitions. [2023-11-29 05:08:06,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-11-29 05:08:06,115 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 674 transitions. [2023-11-29 05:08:06,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2023-11-29 05:08:06,132 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:08:06,132 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:08:06,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 05:08:06,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 05:08:06,334 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:08:06,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:08:06,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1153846681, now seen corresponding path program 1 times [2023-11-29 05:08:06,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:08:06,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552606653] [2023-11-29 05:08:06,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:06,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:08:06,451 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:08:06,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [641032672] [2023-11-29 05:08:06,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:06,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:08:06,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:08:06,453 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:08:06,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 05:08:06,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:08:06,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 1291 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 05:08:06,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:08:06,916 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-11-29 05:08:06,916 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:08:06,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:08:06,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552606653] [2023-11-29 05:08:06,917 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:08:06,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641032672] [2023-11-29 05:08:06,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641032672] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:08:06,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:08:06,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:08:06,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416686365] [2023-11-29 05:08:06,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:08:06,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:08:06,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:08:06,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:08:06,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:08:06,922 INFO L87 Difference]: Start difference. First operand 407 states and 674 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-11-29 05:08:07,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:08:07,036 INFO L93 Difference]: Finished difference Result 851 states and 1419 transitions. [2023-11-29 05:08:07,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:08:07,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 528 [2023-11-29 05:08:07,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:08:07,044 INFO L225 Difference]: With dead ends: 851 [2023-11-29 05:08:07,045 INFO L226 Difference]: Without dead ends: 577 [2023-11-29 05:08:07,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 526 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 05:08:07,049 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 263 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:08:07,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 890 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:08:07,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2023-11-29 05:08:07,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 574. [2023-11-29 05:08:07,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 395 states have (on average 1.5291139240506328) internal successors, (604), 396 states have internal predecessors, (604), 174 states have call successors, (174), 4 states have call predecessors, (174), 4 states have return successors, (174), 173 states have call predecessors, (174), 174 states have call successors, (174) [2023-11-29 05:08:07,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 952 transitions. [2023-11-29 05:08:07,101 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 952 transitions. Word has length 528 [2023-11-29 05:08:07,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:08:07,103 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 952 transitions. [2023-11-29 05:08:07,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-11-29 05:08:07,103 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 952 transitions. [2023-11-29 05:08:07,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 529 [2023-11-29 05:08:07,108 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:08:07,109 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:08:07,116 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 05:08:07,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:08:07,310 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:08:07,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:08:07,311 INFO L85 PathProgramCache]: Analyzing trace with hash 223740199, now seen corresponding path program 1 times [2023-11-29 05:08:07,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:08:07,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367441451] [2023-11-29 05:08:07,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:07,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:08:07,398 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:08:07,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1227988654] [2023-11-29 05:08:07,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:07,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:08:07,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:08:07,401 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:08:07,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 05:08:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:08:07,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 1291 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 05:08:07,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:08:07,866 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-11-29 05:08:07,866 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:08:07,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:08:07,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367441451] [2023-11-29 05:08:07,867 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:08:07,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227988654] [2023-11-29 05:08:07,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227988654] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:08:07,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:08:07,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:08:07,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557660577] [2023-11-29 05:08:07,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:08:07,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:08:07,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:08:07,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:08:07,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:08:07,870 INFO L87 Difference]: Start difference. First operand 574 states and 952 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-11-29 05:08:11,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 05:08:12,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:08:12,062 INFO L93 Difference]: Finished difference Result 1442 states and 2413 transitions. [2023-11-29 05:08:12,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:08:12,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 528 [2023-11-29 05:08:12,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:08:12,072 INFO L225 Difference]: With dead ends: 1442 [2023-11-29 05:08:12,073 INFO L226 Difference]: Without dead ends: 1005 [2023-11-29 05:08:12,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 527 GetRequests, 526 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 05:08:12,075 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 431 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:08:12,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 890 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 27 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2023-11-29 05:08:12,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1005 states. [2023-11-29 05:08:12,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1005 to 1003. [2023-11-29 05:08:12,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1003 states, 727 states have (on average 1.5515818431911967) internal successors, (1128), 729 states have internal predecessors, (1128), 269 states have call successors, (269), 6 states have call predecessors, (269), 6 states have return successors, (269), 267 states have call predecessors, (269), 269 states have call successors, (269) [2023-11-29 05:08:12,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1666 transitions. [2023-11-29 05:08:12,198 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1666 transitions. Word has length 528 [2023-11-29 05:08:12,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:08:12,199 INFO L495 AbstractCegarLoop]: Abstraction has 1003 states and 1666 transitions. [2023-11-29 05:08:12,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-11-29 05:08:12,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1666 transitions. [2023-11-29 05:08:12,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2023-11-29 05:08:12,217 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:08:12,217 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:08:12,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-29 05:08:12,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:08:12,420 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:08:12,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:08:12,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1140340741, now seen corresponding path program 1 times [2023-11-29 05:08:12,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:08:12,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606656115] [2023-11-29 05:08:12,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:12,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:08:12,504 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:08:12,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1440246166] [2023-11-29 05:08:12,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:12,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:08:12,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:08:12,507 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:08:12,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 05:08:12,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:08:12,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 1292 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 05:08:12,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:08:12,971 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-11-29 05:08:12,972 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:08:12,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:08:12,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606656115] [2023-11-29 05:08:12,972 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:08:12,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440246166] [2023-11-29 05:08:12,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440246166] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:08:12,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:08:12,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:08:12,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279792166] [2023-11-29 05:08:12,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:08:12,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 05:08:12,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:08:12,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 05:08:12,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 05:08:12,976 INFO L87 Difference]: Start difference. First operand 1003 states and 1666 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-11-29 05:08:13,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:08:13,130 INFO L93 Difference]: Finished difference Result 2673 states and 4460 transitions. [2023-11-29 05:08:13,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 05:08:13,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 529 [2023-11-29 05:08:13,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:08:13,153 INFO L225 Difference]: With dead ends: 2673 [2023-11-29 05:08:13,153 INFO L226 Difference]: Without dead ends: 1807 [2023-11-29 05:08:13,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 527 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 05:08:13,157 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 413 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 05:08:13,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 906 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 05:08:13,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1807 states. [2023-11-29 05:08:13,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1807 to 1123. [2023-11-29 05:08:13,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1123 states, 847 states have (on average 1.5820543093270365) internal successors, (1340), 849 states have internal predecessors, (1340), 269 states have call successors, (269), 6 states have call predecessors, (269), 6 states have return successors, (269), 267 states have call predecessors, (269), 269 states have call successors, (269) [2023-11-29 05:08:13,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1878 transitions. [2023-11-29 05:08:13,337 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1878 transitions. Word has length 529 [2023-11-29 05:08:13,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:08:13,339 INFO L495 AbstractCegarLoop]: Abstraction has 1123 states and 1878 transitions. [2023-11-29 05:08:13,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-11-29 05:08:13,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1878 transitions. [2023-11-29 05:08:13,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2023-11-29 05:08:13,346 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:08:13,346 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:08:13,354 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 05:08:13,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:08:13,547 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:08:13,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:08:13,547 INFO L85 PathProgramCache]: Analyzing trace with hash 296335239, now seen corresponding path program 1 times [2023-11-29 05:08:13,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:08:13,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936815248] [2023-11-29 05:08:13,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:13,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:08:13,622 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:08:13,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1775717672] [2023-11-29 05:08:13,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:13,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:08:13,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:08:13,624 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:08:13,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 05:08:14,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:08:14,067 INFO L262 TraceCheckSpWp]: Trace formula consists of 1293 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 05:08:14,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:08:14,180 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-11-29 05:08:14,181 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:08:14,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:08:14,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936815248] [2023-11-29 05:08:14,181 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:08:14,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775717672] [2023-11-29 05:08:14,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775717672] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:08:14,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:08:14,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:08:14,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029703373] [2023-11-29 05:08:14,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:08:14,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:08:14,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:08:14,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:08:14,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:08:14,186 INFO L87 Difference]: Start difference. First operand 1123 states and 1878 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-11-29 05:08:14,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:08:14,609 INFO L93 Difference]: Finished difference Result 3573 states and 5996 transitions. [2023-11-29 05:08:14,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:08:14,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 529 [2023-11-29 05:08:14,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:08:14,628 INFO L225 Difference]: With dead ends: 3573 [2023-11-29 05:08:14,628 INFO L226 Difference]: Without dead ends: 2587 [2023-11-29 05:08:14,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 526 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 05:08:14,633 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 685 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:08:14,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [685 Valid, 1184 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 05:08:14,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2587 states. [2023-11-29 05:08:14,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2587 to 1939. [2023-11-29 05:08:14,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1939 states, 1586 states have (on average 1.6128625472887768) internal successors, (2558), 1592 states have internal predecessors, (2558), 341 states have call successors, (341), 11 states have call predecessors, (341), 11 states have return successors, (341), 335 states have call predecessors, (341), 341 states have call successors, (341) [2023-11-29 05:08:14,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1939 states to 1939 states and 3240 transitions. [2023-11-29 05:08:14,814 INFO L78 Accepts]: Start accepts. Automaton has 1939 states and 3240 transitions. Word has length 529 [2023-11-29 05:08:14,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:08:14,815 INFO L495 AbstractCegarLoop]: Abstraction has 1939 states and 3240 transitions. [2023-11-29 05:08:14,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-11-29 05:08:14,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1939 states and 3240 transitions. [2023-11-29 05:08:14,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2023-11-29 05:08:14,823 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:08:14,823 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:08:14,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 05:08:15,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:08:15,024 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:08:15,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:08:15,025 INFO L85 PathProgramCache]: Analyzing trace with hash 857035017, now seen corresponding path program 1 times [2023-11-29 05:08:15,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:08:15,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923689149] [2023-11-29 05:08:15,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:15,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:08:15,100 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:08:15,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2046747509] [2023-11-29 05:08:15,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:15,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:08:15,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:08:15,104 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:08:15,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 05:08:15,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:08:15,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 1292 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 05:08:15,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:08:15,936 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-11-29 05:08:15,936 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:08:15,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:08:15,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923689149] [2023-11-29 05:08:15,937 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:08:15,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046747509] [2023-11-29 05:08:15,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046747509] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:08:15,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:08:15,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 05:08:15,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072047980] [2023-11-29 05:08:15,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:08:15,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:08:15,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:08:15,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:08:15,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:08:15,941 INFO L87 Difference]: Start difference. First operand 1939 states and 3240 transitions. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-11-29 05:08:17,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:08:17,280 INFO L93 Difference]: Finished difference Result 8549 states and 14207 transitions. [2023-11-29 05:08:17,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 05:08:17,281 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 529 [2023-11-29 05:08:17,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:08:17,323 INFO L225 Difference]: With dead ends: 8549 [2023-11-29 05:08:17,323 INFO L226 Difference]: Without dead ends: 6751 [2023-11-29 05:08:17,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 526 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:08:17,330 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 2419 mSDsluCounter, 1810 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2419 SdHoareTripleChecker+Valid, 2347 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:08:17,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2419 Valid, 2347 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 05:08:17,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6751 states. [2023-11-29 05:08:17,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6751 to 4356. [2023-11-29 05:08:17,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4356 states, 3702 states have (on average 1.609670448406267) internal successors, (5959), 3720 states have internal predecessors, (5959), 625 states have call successors, (625), 28 states have call predecessors, (625), 28 states have return successors, (625), 607 states have call predecessors, (625), 625 states have call successors, (625) [2023-11-29 05:08:17,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4356 states to 4356 states and 7209 transitions. [2023-11-29 05:08:17,673 INFO L78 Accepts]: Start accepts. Automaton has 4356 states and 7209 transitions. Word has length 529 [2023-11-29 05:08:17,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:08:17,674 INFO L495 AbstractCegarLoop]: Abstraction has 4356 states and 7209 transitions. [2023-11-29 05:08:17,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-11-29 05:08:17,675 INFO L276 IsEmpty]: Start isEmpty. Operand 4356 states and 7209 transitions. [2023-11-29 05:08:17,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2023-11-29 05:08:17,687 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:08:17,688 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:08:17,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 05:08:17,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 05:08:17,897 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:08:17,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:08:17,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1171551093, now seen corresponding path program 1 times [2023-11-29 05:08:17,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:08:17,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298417964] [2023-11-29 05:08:17,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:17,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:08:17,972 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:08:17,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2026057757] [2023-11-29 05:08:17,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:17,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:08:17,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:08:17,974 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:08:17,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 05:08:18,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:08:18,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 1289 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:08:18,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:08:18,505 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 1128 proven. 9 refuted. 0 times theorem prover too weak. 11187 trivial. 0 not checked. [2023-11-29 05:08:18,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:08:18,790 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 225 proven. 9 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2023-11-29 05:08:18,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:08:18,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298417964] [2023-11-29 05:08:18,791 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:08:18,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026057757] [2023-11-29 05:08:18,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026057757] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:08:18,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:08:18,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2023-11-29 05:08:18,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229600298] [2023-11-29 05:08:18,792 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:08:18,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:08:18,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:08:18,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:08:18,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:08:18,795 INFO L87 Difference]: Start difference. First operand 4356 states and 7209 transitions. Second operand has 10 states, 10 states have (on average 14.8) internal successors, (148), 10 states have internal predecessors, (148), 2 states have call successors, (82), 2 states have call predecessors, (82), 4 states have return successors, (83), 2 states have call predecessors, (83), 2 states have call successors, (83) [2023-11-29 05:08:23,749 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 05:08:27,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 05:08:31,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 05:08:35,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 05:08:39,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 05:08:40,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:08:40,722 INFO L93 Difference]: Finished difference Result 11708 states and 19248 transitions. [2023-11-29 05:08:40,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 05:08:40,723 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.8) internal successors, (148), 10 states have internal predecessors, (148), 2 states have call successors, (82), 2 states have call predecessors, (82), 4 states have return successors, (83), 2 states have call predecessors, (83), 2 states have call successors, (83) Word has length 529 [2023-11-29 05:08:40,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:08:40,784 INFO L225 Difference]: With dead ends: 11708 [2023-11-29 05:08:40,784 INFO L226 Difference]: Without dead ends: 7497 [2023-11-29 05:08:40,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1068 GetRequests, 1047 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2023-11-29 05:08:40,794 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 1667 mSDsluCounter, 2186 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 467 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1743 SdHoareTripleChecker+Valid, 2767 SdHoareTripleChecker+Invalid, 1942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 467 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.5s IncrementalHoareTripleChecker+Time [2023-11-29 05:08:40,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1743 Valid, 2767 Invalid, 1942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [467 Valid, 1470 Invalid, 5 Unknown, 0 Unchecked, 21.5s Time] [2023-11-29 05:08:40,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7497 states. [2023-11-29 05:08:41,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7497 to 4388. [2023-11-29 05:08:41,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4388 states, 3731 states have (on average 1.6049316537121414) internal successors, (5988), 3749 states have internal predecessors, (5988), 625 states have call successors, (625), 31 states have call predecessors, (625), 31 states have return successors, (625), 607 states have call predecessors, (625), 625 states have call successors, (625) [2023-11-29 05:08:41,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4388 states to 4388 states and 7238 transitions. [2023-11-29 05:08:41,190 INFO L78 Accepts]: Start accepts. Automaton has 4388 states and 7238 transitions. Word has length 529 [2023-11-29 05:08:41,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:08:41,191 INFO L495 AbstractCegarLoop]: Abstraction has 4388 states and 7238 transitions. [2023-11-29 05:08:41,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.8) internal successors, (148), 10 states have internal predecessors, (148), 2 states have call successors, (82), 2 states have call predecessors, (82), 4 states have return successors, (83), 2 states have call predecessors, (83), 2 states have call successors, (83) [2023-11-29 05:08:41,191 INFO L276 IsEmpty]: Start isEmpty. Operand 4388 states and 7238 transitions. [2023-11-29 05:08:41,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2023-11-29 05:08:41,216 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:08:41,216 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:08:41,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 05:08:41,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 05:08:41,417 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:08:41,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:08:41,418 INFO L85 PathProgramCache]: Analyzing trace with hash 251399868, now seen corresponding path program 1 times [2023-11-29 05:08:41,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:08:41,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647292819] [2023-11-29 05:08:41,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:41,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:08:41,491 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:08:41,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [528571664] [2023-11-29 05:08:41,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:41,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:08:41,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:08:41,496 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:08:41,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 05:08:41,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:08:41,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 1293 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:08:41,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:08:42,042 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 3378 proven. 36 refuted. 0 times theorem prover too weak. 8910 trivial. 0 not checked. [2023-11-29 05:08:42,043 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:08:42,313 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 198 proven. 36 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2023-11-29 05:08:42,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:08:42,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647292819] [2023-11-29 05:08:42,314 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:08:42,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528571664] [2023-11-29 05:08:42,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528571664] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:08:42,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:08:42,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 05:08:42,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391422172] [2023-11-29 05:08:42,315 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:08:42,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:08:42,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:08:42,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:08:42,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:08:42,318 INFO L87 Difference]: Start difference. First operand 4388 states and 7238 transitions. Second operand has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 2 states have call successors, (91), 2 states have call predecessors, (91), 4 states have return successors, (92), 2 states have call predecessors, (92), 2 states have call successors, (92) [2023-11-29 05:08:42,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:08:42,850 INFO L93 Difference]: Finished difference Result 8675 states and 14296 transitions. [2023-11-29 05:08:42,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:08:42,851 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 2 states have call successors, (91), 2 states have call predecessors, (91), 4 states have return successors, (92), 2 states have call predecessors, (92), 2 states have call successors, (92) Word has length 530 [2023-11-29 05:08:42,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:08:42,878 INFO L225 Difference]: With dead ends: 8675 [2023-11-29 05:08:42,878 INFO L226 Difference]: Without dead ends: 4436 [2023-11-29 05:08:42,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1062 GetRequests, 1052 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 05:08:42,886 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 344 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:08:42,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 961 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 05:08:42,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4436 states. [2023-11-29 05:08:43,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4436 to 4400. [2023-11-29 05:08:43,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4400 states, 3740 states have (on average 1.5991978609625668) internal successors, (5981), 3758 states have internal predecessors, (5981), 625 states have call successors, (625), 34 states have call predecessors, (625), 34 states have return successors, (625), 607 states have call predecessors, (625), 625 states have call successors, (625) [2023-11-29 05:08:43,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4400 states to 4400 states and 7231 transitions. [2023-11-29 05:08:43,163 INFO L78 Accepts]: Start accepts. Automaton has 4400 states and 7231 transitions. Word has length 530 [2023-11-29 05:08:43,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:08:43,164 INFO L495 AbstractCegarLoop]: Abstraction has 4400 states and 7231 transitions. [2023-11-29 05:08:43,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.0) internal successors, (147), 7 states have internal predecessors, (147), 2 states have call successors, (91), 2 states have call predecessors, (91), 4 states have return successors, (92), 2 states have call predecessors, (92), 2 states have call successors, (92) [2023-11-29 05:08:43,164 INFO L276 IsEmpty]: Start isEmpty. Operand 4400 states and 7231 transitions. [2023-11-29 05:08:43,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2023-11-29 05:08:43,175 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:08:43,176 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:08:43,184 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 05:08:43,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:08:43,377 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:08:43,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:08:43,377 INFO L85 PathProgramCache]: Analyzing trace with hash -241226306, now seen corresponding path program 1 times [2023-11-29 05:08:43,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:08:43,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631168361] [2023-11-29 05:08:43,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:43,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:08:43,452 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:08:43,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [720944569] [2023-11-29 05:08:43,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:43,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:08:43,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:08:43,453 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:08:43,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 05:08:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:08:43,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 1294 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:08:43,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:08:44,158 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 6220 proven. 123 refuted. 0 times theorem prover too weak. 5981 trivial. 0 not checked. [2023-11-29 05:08:44,158 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:08:44,504 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 111 proven. 123 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2023-11-29 05:08:44,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:08:44,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631168361] [2023-11-29 05:08:44,504 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:08:44,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720944569] [2023-11-29 05:08:44,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720944569] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:08:44,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:08:44,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-11-29 05:08:44,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077063888] [2023-11-29 05:08:44,506 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:08:44,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 05:08:44,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:08:44,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 05:08:44,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:08:44,508 INFO L87 Difference]: Start difference. First operand 4400 states and 7231 transitions. Second operand has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 2 states have call successors, (120), 2 states have call predecessors, (120), 4 states have return successors, (121), 2 states have call predecessors, (121), 2 states have call successors, (121) [2023-11-29 05:08:45,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:08:45,538 INFO L93 Difference]: Finished difference Result 8330 states and 13662 transitions. [2023-11-29 05:08:45,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 05:08:45,539 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 2 states have call successors, (120), 2 states have call predecessors, (120), 4 states have return successors, (121), 2 states have call predecessors, (121), 2 states have call successors, (121) Word has length 530 [2023-11-29 05:08:45,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:08:45,550 INFO L225 Difference]: With dead ends: 8330 [2023-11-29 05:08:45,550 INFO L226 Difference]: Without dead ends: 4083 [2023-11-29 05:08:45,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1069 GetRequests, 1051 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2023-11-29 05:08:45,555 INFO L413 NwaCegarLoop]: 552 mSDtfsCounter, 583 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 1517 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:08:45,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [621 Valid, 1517 Invalid, 1080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 913 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 05:08:45,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4083 states. [2023-11-29 05:08:45,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4083 to 3780. [2023-11-29 05:08:45,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3780 states, 3117 states have (on average 1.5572666025024062) internal successors, (4854), 3135 states have internal predecessors, (4854), 625 states have call successors, (625), 37 states have call predecessors, (625), 37 states have return successors, (625), 607 states have call predecessors, (625), 625 states have call successors, (625) [2023-11-29 05:08:45,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3780 states to 3780 states and 6104 transitions. [2023-11-29 05:08:45,897 INFO L78 Accepts]: Start accepts. Automaton has 3780 states and 6104 transitions. Word has length 530 [2023-11-29 05:08:45,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:08:45,897 INFO L495 AbstractCegarLoop]: Abstraction has 3780 states and 6104 transitions. [2023-11-29 05:08:45,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 18.375) internal successors, (147), 8 states have internal predecessors, (147), 2 states have call successors, (120), 2 states have call predecessors, (120), 4 states have return successors, (121), 2 states have call predecessors, (121), 2 states have call successors, (121) [2023-11-29 05:08:45,898 INFO L276 IsEmpty]: Start isEmpty. Operand 3780 states and 6104 transitions. [2023-11-29 05:08:45,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2023-11-29 05:08:45,907 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:08:45,907 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:08:45,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 05:08:46,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:08:46,108 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:08:46,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:08:46,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1623083291, now seen corresponding path program 1 times [2023-11-29 05:08:46,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:08:46,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831600064] [2023-11-29 05:08:46,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:46,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:08:46,172 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:08:46,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1173828510] [2023-11-29 05:08:46,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:46,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:08:46,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:08:46,174 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:08:46,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 05:08:46,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:08:46,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 1289 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:08:46,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:08:46,645 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-11-29 05:08:46,646 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:08:46,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:08:46,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831600064] [2023-11-29 05:08:46,646 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:08:46,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173828510] [2023-11-29 05:08:46,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173828510] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:08:46,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:08:46,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:08:46,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695942631] [2023-11-29 05:08:46,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:08:46,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:08:46,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:08:46,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:08:46,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:08:46,649 INFO L87 Difference]: Start difference. First operand 3780 states and 6104 transitions. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-11-29 05:08:47,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:08:47,839 INFO L93 Difference]: Finished difference Result 12526 states and 20307 transitions. [2023-11-29 05:08:47,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 05:08:47,839 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 530 [2023-11-29 05:08:47,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:08:47,861 INFO L225 Difference]: With dead ends: 12526 [2023-11-29 05:08:47,862 INFO L226 Difference]: Without dead ends: 8903 [2023-11-29 05:08:47,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 528 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:08:47,867 INFO L413 NwaCegarLoop]: 863 mSDtfsCounter, 1475 mSDsluCounter, 1123 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1986 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 05:08:47,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 1986 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 05:08:47,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8903 states. [2023-11-29 05:08:48,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8903 to 7797. [2023-11-29 05:08:48,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7797 states, 6558 states have (on average 1.5661787130222629) internal successors, (10271), 6594 states have internal predecessors, (10271), 1171 states have call successors, (1171), 67 states have call predecessors, (1171), 67 states have return successors, (1171), 1135 states have call predecessors, (1171), 1171 states have call successors, (1171) [2023-11-29 05:08:48,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7797 states to 7797 states and 12613 transitions. [2023-11-29 05:08:48,345 INFO L78 Accepts]: Start accepts. Automaton has 7797 states and 12613 transitions. Word has length 530 [2023-11-29 05:08:48,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:08:48,345 INFO L495 AbstractCegarLoop]: Abstraction has 7797 states and 12613 transitions. [2023-11-29 05:08:48,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-11-29 05:08:48,346 INFO L276 IsEmpty]: Start isEmpty. Operand 7797 states and 12613 transitions. [2023-11-29 05:08:48,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2023-11-29 05:08:48,359 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:08:48,360 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:08:48,368 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 05:08:48,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 05:08:48,561 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:08:48,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:08:48,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1672752279, now seen corresponding path program 1 times [2023-11-29 05:08:48,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:08:48,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520730689] [2023-11-29 05:08:48,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:48,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:08:48,631 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:08:48,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1701682428] [2023-11-29 05:08:48,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:48,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:08:48,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:08:48,633 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:08:48,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 05:08:49,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:08:49,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 1286 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 05:08:49,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:08:50,370 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-11-29 05:08:50,370 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:08:50,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:08:50,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520730689] [2023-11-29 05:08:50,370 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:08:50,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701682428] [2023-11-29 05:08:50,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701682428] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:08:50,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:08:50,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:08:50,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306655866] [2023-11-29 05:08:50,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:08:50,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:08:50,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:08:50,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:08:50,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:08:50,373 INFO L87 Difference]: Start difference. First operand 7797 states and 12613 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-11-29 05:08:51,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:08:51,002 INFO L93 Difference]: Finished difference Result 18109 states and 29366 transitions. [2023-11-29 05:08:51,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:08:51,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 530 [2023-11-29 05:08:51,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:08:51,029 INFO L225 Difference]: With dead ends: 18109 [2023-11-29 05:08:51,029 INFO L226 Difference]: Without dead ends: 10469 [2023-11-29 05:08:51,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 527 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 05:08:51,041 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 307 mSDsluCounter, 880 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 1329 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:08:51,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 1329 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 05:08:51,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10469 states. [2023-11-29 05:08:51,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10469 to 7843. [2023-11-29 05:08:51,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7843 states, 6604 states have (on average 1.5645063597819504) internal successors, (10332), 6640 states have internal predecessors, (10332), 1171 states have call successors, (1171), 67 states have call predecessors, (1171), 67 states have return successors, (1171), 1135 states have call predecessors, (1171), 1171 states have call successors, (1171) [2023-11-29 05:08:51,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7843 states to 7843 states and 12674 transitions. [2023-11-29 05:08:51,546 INFO L78 Accepts]: Start accepts. Automaton has 7843 states and 12674 transitions. Word has length 530 [2023-11-29 05:08:51,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:08:51,546 INFO L495 AbstractCegarLoop]: Abstraction has 7843 states and 12674 transitions. [2023-11-29 05:08:51,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 3 states have internal predecessors, (138), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-11-29 05:08:51,547 INFO L276 IsEmpty]: Start isEmpty. Operand 7843 states and 12674 transitions. [2023-11-29 05:08:51,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2023-11-29 05:08:51,552 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:08:51,552 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:08:51,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-29 05:08:51,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:08:51,753 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:08:51,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:08:51,754 INFO L85 PathProgramCache]: Analyzing trace with hash -56325341, now seen corresponding path program 1 times [2023-11-29 05:08:51,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:08:51,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758678860] [2023-11-29 05:08:51,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:51,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:08:51,808 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:08:51,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1937581457] [2023-11-29 05:08:51,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:51,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:08:51,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:08:51,810 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:08:51,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 05:08:52,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:08:52,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 1289 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 05:08:52,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:08:53,795 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-11-29 05:08:53,795 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:08:53,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:08:53,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758678860] [2023-11-29 05:08:53,795 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:08:53,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937581457] [2023-11-29 05:08:53,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937581457] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:08:53,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:08:53,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 05:08:53,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453504559] [2023-11-29 05:08:53,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:08:53,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:08:53,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:08:53,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:08:53,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:08:53,797 INFO L87 Difference]: Start difference. First operand 7843 states and 12674 transitions. Second operand has 10 states, 10 states have (on average 13.8) internal successors, (138), 9 states have internal predecessors, (138), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-11-29 05:09:00,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 05:09:04,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 05:09:05,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:09:05,706 INFO L93 Difference]: Finished difference Result 23833 states and 38408 transitions. [2023-11-29 05:09:05,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-29 05:09:05,706 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.8) internal successors, (138), 9 states have internal predecessors, (138), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 530 [2023-11-29 05:09:05,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:09:05,735 INFO L225 Difference]: With dead ends: 23833 [2023-11-29 05:09:05,735 INFO L226 Difference]: Without dead ends: 16161 [2023-11-29 05:09:05,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 547 GetRequests, 521 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=196, Invalid=560, Unknown=0, NotChecked=0, Total=756 [2023-11-29 05:09:05,750 INFO L413 NwaCegarLoop]: 751 mSDtfsCounter, 5166 mSDsluCounter, 3816 mSDsCounter, 0 mSdLazyCounter, 1612 mSolverCounterSat, 1612 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5166 SdHoareTripleChecker+Valid, 4567 SdHoareTripleChecker+Invalid, 3226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1612 IncrementalHoareTripleChecker+Valid, 1612 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2023-11-29 05:09:05,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5166 Valid, 4567 Invalid, 3226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1612 Valid, 1612 Invalid, 2 Unknown, 0 Unchecked, 10.8s Time] [2023-11-29 05:09:05,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16161 states. [2023-11-29 05:09:06,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16161 to 8833. [2023-11-29 05:09:06,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8833 states, 7284 states have (on average 1.5488742449203734) internal successors, (11282), 7324 states have internal predecessors, (11282), 1457 states have call successors, (1457), 91 states have call predecessors, (1457), 91 states have return successors, (1457), 1417 states have call predecessors, (1457), 1457 states have call successors, (1457) [2023-11-29 05:09:06,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8833 states to 8833 states and 14196 transitions. [2023-11-29 05:09:06,740 INFO L78 Accepts]: Start accepts. Automaton has 8833 states and 14196 transitions. Word has length 530 [2023-11-29 05:09:06,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:09:06,741 INFO L495 AbstractCegarLoop]: Abstraction has 8833 states and 14196 transitions. [2023-11-29 05:09:06,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.8) internal successors, (138), 9 states have internal predecessors, (138), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-11-29 05:09:06,741 INFO L276 IsEmpty]: Start isEmpty. Operand 8833 states and 14196 transitions. [2023-11-29 05:09:06,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2023-11-29 05:09:06,746 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:09:06,747 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:09:06,755 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 05:09:06,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 05:09:06,948 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:09:06,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:09:06,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1091383391, now seen corresponding path program 1 times [2023-11-29 05:09:06,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:09:06,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448033142] [2023-11-29 05:09:06,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:09:06,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:09:07,009 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:09:07,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2101359955] [2023-11-29 05:09:07,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:09:07,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:09:07,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:09:07,011 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:09:07,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 05:09:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:09:07,420 INFO L262 TraceCheckSpWp]: Trace formula consists of 1288 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 05:09:07,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:09:07,819 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-11-29 05:09:07,819 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:09:07,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:09:07,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448033142] [2023-11-29 05:09:07,819 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:09:07,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101359955] [2023-11-29 05:09:07,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101359955] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:09:07,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:09:07,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 05:09:07,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760947151] [2023-11-29 05:09:07,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:09:07,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:09:07,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:09:07,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:09:07,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:09:07,822 INFO L87 Difference]: Start difference. First operand 8833 states and 14196 transitions. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-11-29 05:09:08,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:09:08,657 INFO L93 Difference]: Finished difference Result 27030 states and 43686 transitions. [2023-11-29 05:09:08,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 05:09:08,658 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 530 [2023-11-29 05:09:08,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:09:08,686 INFO L225 Difference]: With dead ends: 27030 [2023-11-29 05:09:08,686 INFO L226 Difference]: Without dead ends: 18400 [2023-11-29 05:09:08,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 527 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:09:08,698 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 1087 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 2251 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:09:08,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1087 Valid, 2251 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 05:09:08,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18400 states. [2023-11-29 05:09:09,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18400 to 9285. [2023-11-29 05:09:09,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9285 states, 7736 states have (on average 1.5484746639089968) internal successors, (11979), 7776 states have internal predecessors, (11979), 1457 states have call successors, (1457), 91 states have call predecessors, (1457), 91 states have return successors, (1457), 1417 states have call predecessors, (1457), 1457 states have call successors, (1457) [2023-11-29 05:09:09,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9285 states to 9285 states and 14893 transitions. [2023-11-29 05:09:09,411 INFO L78 Accepts]: Start accepts. Automaton has 9285 states and 14893 transitions. Word has length 530 [2023-11-29 05:09:09,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:09:09,412 INFO L495 AbstractCegarLoop]: Abstraction has 9285 states and 14893 transitions. [2023-11-29 05:09:09,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-11-29 05:09:09,412 INFO L276 IsEmpty]: Start isEmpty. Operand 9285 states and 14893 transitions. [2023-11-29 05:09:09,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2023-11-29 05:09:09,419 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:09:09,419 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:09:09,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 05:09:09,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 05:09:09,620 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:09:09,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:09:09,620 INFO L85 PathProgramCache]: Analyzing trace with hash 169533859, now seen corresponding path program 1 times [2023-11-29 05:09:09,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:09:09,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099867323] [2023-11-29 05:09:09,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:09:09,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:09:09,681 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:09:09,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1345366535] [2023-11-29 05:09:09,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:09:09,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:09:09,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:09:09,683 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:09:09,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 05:09:10,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:09:10,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 1289 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 05:09:10,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:09:10,356 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 6168 proven. 129 refuted. 0 times theorem prover too weak. 6027 trivial. 0 not checked. [2023-11-29 05:09:10,356 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:09:10,694 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 105 proven. 129 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2023-11-29 05:09:10,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:09:10,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099867323] [2023-11-29 05:09:10,695 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:09:10,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345366535] [2023-11-29 05:09:10,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345366535] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:09:10,695 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:09:10,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 10 [2023-11-29 05:09:10,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247344363] [2023-11-29 05:09:10,696 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:09:10,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 05:09:10,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:09:10,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 05:09:10,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-11-29 05:09:10,700 INFO L87 Difference]: Start difference. First operand 9285 states and 14893 transitions. Second operand has 10 states, 10 states have (on average 16.9) internal successors, (169), 10 states have internal predecessors, (169), 2 states have call successors, (122), 2 states have call predecessors, (122), 4 states have return successors, (123), 2 states have call predecessors, (123), 2 states have call successors, (123) [2023-11-29 05:09:15,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 05:09:19,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 05:09:23,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.67s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 05:09:25,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:09:25,924 INFO L93 Difference]: Finished difference Result 33125 states and 53359 transitions. [2023-11-29 05:09:25,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-29 05:09:25,925 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.9) internal successors, (169), 10 states have internal predecessors, (169), 2 states have call successors, (122), 2 states have call predecessors, (122), 4 states have return successors, (123), 2 states have call predecessors, (123), 2 states have call successors, (123) Word has length 530 [2023-11-29 05:09:25,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:09:25,972 INFO L225 Difference]: With dead ends: 33125 [2023-11-29 05:09:25,972 INFO L226 Difference]: Without dead ends: 24043 [2023-11-29 05:09:25,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1100 GetRequests, 1054 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=504, Invalid=1658, Unknown=0, NotChecked=0, Total=2162 [2023-11-29 05:09:25,987 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 3035 mSDsluCounter, 1987 mSDsCounter, 0 mSdLazyCounter, 1397 mSolverCounterSat, 1212 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3108 SdHoareTripleChecker+Valid, 2499 SdHoareTripleChecker+Invalid, 2611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1212 IncrementalHoareTripleChecker+Valid, 1397 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:09:25,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3108 Valid, 2499 Invalid, 2611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1212 Valid, 1397 Invalid, 2 Unknown, 0 Unchecked, 13.6s Time] [2023-11-29 05:09:26,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24043 states. [2023-11-29 05:09:27,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24043 to 14265. [2023-11-29 05:09:27,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14265 states, 12581 states have (on average 1.5873142039583499) internal successors, (19970), 12627 states have internal predecessors, (19970), 1585 states have call successors, (1585), 98 states have call predecessors, (1585), 98 states have return successors, (1585), 1539 states have call predecessors, (1585), 1585 states have call successors, (1585) [2023-11-29 05:09:27,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14265 states to 14265 states and 23140 transitions. [2023-11-29 05:09:27,101 INFO L78 Accepts]: Start accepts. Automaton has 14265 states and 23140 transitions. Word has length 530 [2023-11-29 05:09:27,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:09:27,102 INFO L495 AbstractCegarLoop]: Abstraction has 14265 states and 23140 transitions. [2023-11-29 05:09:27,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.9) internal successors, (169), 10 states have internal predecessors, (169), 2 states have call successors, (122), 2 states have call predecessors, (122), 4 states have return successors, (123), 2 states have call predecessors, (123), 2 states have call successors, (123) [2023-11-29 05:09:27,102 INFO L276 IsEmpty]: Start isEmpty. Operand 14265 states and 23140 transitions. [2023-11-29 05:09:27,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-11-29 05:09:27,111 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:09:27,112 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:09:27,118 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 05:09:27,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 05:09:27,312 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:09:27,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:09:27,313 INFO L85 PathProgramCache]: Analyzing trace with hash 2114495787, now seen corresponding path program 1 times [2023-11-29 05:09:27,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:09:27,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942276960] [2023-11-29 05:09:27,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:09:27,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:09:27,369 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:09:27,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1082356626] [2023-11-29 05:09:27,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:09:27,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:09:27,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:09:27,371 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:09:27,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 05:09:27,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:09:27,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 1291 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 05:09:27,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:09:28,922 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 5898 proven. 144 refuted. 0 times theorem prover too weak. 6282 trivial. 0 not checked. [2023-11-29 05:09:28,922 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:09:29,443 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 90 proven. 144 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2023-11-29 05:09:29,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:09:29,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942276960] [2023-11-29 05:09:29,443 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:09:29,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082356626] [2023-11-29 05:09:29,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082356626] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:09:29,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:09:29,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2023-11-29 05:09:29,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306187320] [2023-11-29 05:09:29,444 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:09:29,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 05:09:29,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:09:29,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 05:09:29,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:09:29,447 INFO L87 Difference]: Start difference. First operand 14265 states and 23140 transitions. Second operand has 14 states, 14 states have (on average 18.285714285714285) internal successors, (256), 14 states have internal predecessors, (256), 4 states have call successors, (158), 3 states have call predecessors, (158), 5 states have return successors, (158), 4 states have call predecessors, (158), 4 states have call successors, (158) [2023-11-29 05:09:31,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 05:09:35,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 05:09:39,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 05:09:43,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.89s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 05:09:44,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:09:44,548 INFO L93 Difference]: Finished difference Result 47317 states and 76859 transitions. [2023-11-29 05:09:44,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 05:09:44,548 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 18.285714285714285) internal successors, (256), 14 states have internal predecessors, (256), 4 states have call successors, (158), 3 states have call predecessors, (158), 5 states have return successors, (158), 4 states have call predecessors, (158), 4 states have call successors, (158) Word has length 531 [2023-11-29 05:09:44,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:09:44,582 INFO L225 Difference]: With dead ends: 47317 [2023-11-29 05:09:44,582 INFO L226 Difference]: Without dead ends: 33259 [2023-11-29 05:09:44,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1070 GetRequests, 1049 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=362, Unknown=0, NotChecked=0, Total=506 [2023-11-29 05:09:44,593 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 1555 mSDsluCounter, 2950 mSDsCounter, 0 mSdLazyCounter, 1303 mSolverCounterSat, 418 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1555 SdHoareTripleChecker+Valid, 3313 SdHoareTripleChecker+Invalid, 1723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 1303 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2023-11-29 05:09:44,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1555 Valid, 3313 Invalid, 1723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 1303 Invalid, 2 Unknown, 0 Unchecked, 13.8s Time] [2023-11-29 05:09:44,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33259 states. [2023-11-29 05:09:45,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33259 to 26494. [2023-11-29 05:09:45,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26494 states, 23708 states have (on average 1.5930065800573645) internal successors, (37767), 23804 states have internal predecessors, (37767), 2619 states have call successors, (2619), 166 states have call predecessors, (2619), 166 states have return successors, (2619), 2523 states have call predecessors, (2619), 2619 states have call successors, (2619) [2023-11-29 05:09:45,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26494 states to 26494 states and 43005 transitions. [2023-11-29 05:09:45,839 INFO L78 Accepts]: Start accepts. Automaton has 26494 states and 43005 transitions. Word has length 531 [2023-11-29 05:09:45,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:09:45,839 INFO L495 AbstractCegarLoop]: Abstraction has 26494 states and 43005 transitions. [2023-11-29 05:09:45,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 18.285714285714285) internal successors, (256), 14 states have internal predecessors, (256), 4 states have call successors, (158), 3 states have call predecessors, (158), 5 states have return successors, (158), 4 states have call predecessors, (158), 4 states have call successors, (158) [2023-11-29 05:09:45,840 INFO L276 IsEmpty]: Start isEmpty. Operand 26494 states and 43005 transitions. [2023-11-29 05:09:45,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-11-29 05:09:45,911 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:09:45,911 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:09:45,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 05:09:46,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 05:09:46,112 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:09:46,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:09:46,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1905711895, now seen corresponding path program 1 times [2023-11-29 05:09:46,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:09:46,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776677262] [2023-11-29 05:09:46,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:09:46,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:09:46,167 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:09:46,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1157993025] [2023-11-29 05:09:46,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:09:46,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:09:46,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:09:46,169 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:09:46,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 05:09:46,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:09:46,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 1288 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 05:09:46,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:09:46,779 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 4834 proven. 60 refuted. 0 times theorem prover too weak. 7430 trivial. 0 not checked. [2023-11-29 05:09:46,780 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:09:47,050 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 174 proven. 60 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2023-11-29 05:09:47,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:09:47,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776677262] [2023-11-29 05:09:47,051 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:09:47,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157993025] [2023-11-29 05:09:47,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157993025] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:09:47,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:09:47,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-11-29 05:09:47,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337169903] [2023-11-29 05:09:47,052 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:09:47,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 05:09:47,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:09:47,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 05:09:47,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-29 05:09:47,054 INFO L87 Difference]: Start difference. First operand 26494 states and 43005 transitions. Second operand has 11 states, 11 states have (on average 18.09090909090909) internal successors, (199), 11 states have internal predecessors, (199), 3 states have call successors, (99), 2 states have call predecessors, (99), 4 states have return successors, (100), 3 states have call predecessors, (100), 3 states have call successors, (100) [2023-11-29 05:09:51,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 05:09:54,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:09:54,201 INFO L93 Difference]: Finished difference Result 79703 states and 129298 transitions. [2023-11-29 05:09:54,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 05:09:54,202 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 18.09090909090909) internal successors, (199), 11 states have internal predecessors, (199), 3 states have call successors, (99), 2 states have call predecessors, (99), 4 states have return successors, (100), 3 states have call predecessors, (100), 3 states have call successors, (100) Word has length 531 [2023-11-29 05:09:54,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:09:54,264 INFO L225 Difference]: With dead ends: 79703 [2023-11-29 05:09:54,265 INFO L226 Difference]: Without dead ends: 53420 [2023-11-29 05:09:54,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1073 GetRequests, 1051 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2023-11-29 05:09:54,283 INFO L413 NwaCegarLoop]: 716 mSDtfsCounter, 878 mSDsluCounter, 2095 mSDsCounter, 0 mSdLazyCounter, 1242 mSolverCounterSat, 278 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 2811 SdHoareTripleChecker+Invalid, 1521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 1242 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:09:54,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [937 Valid, 2811 Invalid, 1521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 1242 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2023-11-29 05:09:54,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53420 states. [2023-11-29 05:09:55,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53420 to 27880. [2023-11-29 05:09:55,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27880 states, 25085 states have (on average 1.581383296790911) internal successors, (39669), 25181 states have internal predecessors, (39669), 2619 states have call successors, (2619), 175 states have call predecessors, (2619), 175 states have return successors, (2619), 2523 states have call predecessors, (2619), 2619 states have call successors, (2619) [2023-11-29 05:09:55,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27880 states to 27880 states and 44907 transitions. [2023-11-29 05:09:55,934 INFO L78 Accepts]: Start accepts. Automaton has 27880 states and 44907 transitions. Word has length 531 [2023-11-29 05:09:55,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:09:55,935 INFO L495 AbstractCegarLoop]: Abstraction has 27880 states and 44907 transitions. [2023-11-29 05:09:55,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 18.09090909090909) internal successors, (199), 11 states have internal predecessors, (199), 3 states have call successors, (99), 2 states have call predecessors, (99), 4 states have return successors, (100), 3 states have call predecessors, (100), 3 states have call successors, (100) [2023-11-29 05:09:55,935 INFO L276 IsEmpty]: Start isEmpty. Operand 27880 states and 44907 transitions. [2023-11-29 05:09:55,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-11-29 05:09:55,944 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:09:55,944 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:09:55,951 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 05:09:56,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 05:09:56,145 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:09:56,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:09:56,146 INFO L85 PathProgramCache]: Analyzing trace with hash -518926485, now seen corresponding path program 1 times [2023-11-29 05:09:56,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:09:56,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087351419] [2023-11-29 05:09:56,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:09:56,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:09:56,198 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:09:56,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2062539938] [2023-11-29 05:09:56,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:09:56,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:09:56,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:09:56,199 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:09:56,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 05:09:56,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:09:56,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 1289 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 05:09:56,650 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:09:57,876 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 8094 proven. 354 refuted. 0 times theorem prover too weak. 3876 trivial. 0 not checked. [2023-11-29 05:09:57,876 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:09:58,604 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 330 proven. 363 refuted. 0 times theorem prover too weak. 11631 trivial. 0 not checked. [2023-11-29 05:09:58,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:09:58,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087351419] [2023-11-29 05:09:58,604 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:09:58,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062539938] [2023-11-29 05:09:58,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062539938] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:09:58,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:09:58,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-11-29 05:09:58,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204911326] [2023-11-29 05:09:58,605 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:09:58,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 05:09:58,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:09:58,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 05:09:58,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2023-11-29 05:09:58,608 INFO L87 Difference]: Start difference. First operand 27880 states and 44907 transitions. Second operand has 26 states, 25 states have (on average 9.56) internal successors, (239), 24 states have internal predecessors, (239), 7 states have call successors, (135), 4 states have call predecessors, (135), 9 states have return successors, (136), 7 states have call predecessors, (136), 7 states have call successors, (136) [2023-11-29 05:10:04,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 05:10:20,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:10:20,118 INFO L93 Difference]: Finished difference Result 214117 states and 343169 transitions. [2023-11-29 05:10:20,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2023-11-29 05:10:20,119 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 9.56) internal successors, (239), 24 states have internal predecessors, (239), 7 states have call successors, (135), 4 states have call predecessors, (135), 9 states have return successors, (136), 7 states have call predecessors, (136), 7 states have call successors, (136) Word has length 531 [2023-11-29 05:10:20,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:10:20,375 INFO L225 Difference]: With dead ends: 214117 [2023-11-29 05:10:20,375 INFO L226 Difference]: Without dead ends: 186452 [2023-11-29 05:10:20,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1172 GetRequests, 1052 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4962 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3063, Invalid=11699, Unknown=0, NotChecked=0, Total=14762 [2023-11-29 05:10:20,415 INFO L413 NwaCegarLoop]: 756 mSDtfsCounter, 8147 mSDsluCounter, 4552 mSDsCounter, 0 mSdLazyCounter, 4656 mSolverCounterSat, 1823 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8169 SdHoareTripleChecker+Valid, 5308 SdHoareTripleChecker+Invalid, 6480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1823 IncrementalHoareTripleChecker+Valid, 4656 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:10:20,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8169 Valid, 5308 Invalid, 6480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1823 Valid, 4656 Invalid, 1 Unknown, 0 Unchecked, 9.0s Time] [2023-11-29 05:10:20,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186452 states. [2023-11-29 05:10:24,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186452 to 62102. [2023-11-29 05:10:24,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62102 states, 56610 states have (on average 1.5682741565094507) internal successors, (88780), 56802 states have internal predecessors, (88780), 5027 states have call successors, (5027), 464 states have call predecessors, (5027), 464 states have return successors, (5027), 4835 states have call predecessors, (5027), 5027 states have call successors, (5027) [2023-11-29 05:10:24,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62102 states to 62102 states and 98834 transitions. [2023-11-29 05:10:24,903 INFO L78 Accepts]: Start accepts. Automaton has 62102 states and 98834 transitions. Word has length 531 [2023-11-29 05:10:24,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:10:24,904 INFO L495 AbstractCegarLoop]: Abstraction has 62102 states and 98834 transitions. [2023-11-29 05:10:24,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 9.56) internal successors, (239), 24 states have internal predecessors, (239), 7 states have call successors, (135), 4 states have call predecessors, (135), 9 states have return successors, (136), 7 states have call predecessors, (136), 7 states have call successors, (136) [2023-11-29 05:10:24,904 INFO L276 IsEmpty]: Start isEmpty. Operand 62102 states and 98834 transitions. [2023-11-29 05:10:24,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-11-29 05:10:24,922 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:10:24,923 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:10:24,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-29 05:10:25,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 05:10:25,123 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:10:25,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:10:25,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1698703913, now seen corresponding path program 1 times [2023-11-29 05:10:25,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:10:25,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402388134] [2023-11-29 05:10:25,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:10:25,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:10:25,172 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:10:25,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [288847829] [2023-11-29 05:10:25,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:10:25,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:10:25,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:10:25,174 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:10:25,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 05:10:25,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:10:25,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 1289 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-29 05:10:25,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:10:26,751 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 7643 proven. 261 refuted. 0 times theorem prover too weak. 4420 trivial. 0 not checked. [2023-11-29 05:10:26,751 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:10:27,437 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 123 proven. 111 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2023-11-29 05:10:27,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:10:27,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402388134] [2023-11-29 05:10:27,437 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:10:27,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288847829] [2023-11-29 05:10:27,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288847829] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:10:27,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:10:27,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 25 [2023-11-29 05:10:27,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553604372] [2023-11-29 05:10:27,438 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:10:27,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-29 05:10:27,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:10:27,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-29 05:10:27,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2023-11-29 05:10:27,441 INFO L87 Difference]: Start difference. First operand 62102 states and 98834 transitions. Second operand has 25 states, 25 states have (on average 8.96) internal successors, (224), 25 states have internal predecessors, (224), 4 states have call successors, (130), 3 states have call predecessors, (130), 6 states have return successors, (131), 4 states have call predecessors, (131), 4 states have call successors, (131) [2023-11-29 05:10:53,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:10:53,146 INFO L93 Difference]: Finished difference Result 414150 states and 664676 transitions. [2023-11-29 05:10:53,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-11-29 05:10:53,147 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 8.96) internal successors, (224), 25 states have internal predecessors, (224), 4 states have call successors, (130), 3 states have call predecessors, (130), 6 states have return successors, (131), 4 states have call predecessors, (131), 4 states have call successors, (131) Word has length 531 [2023-11-29 05:10:53,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:10:53,846 INFO L225 Difference]: With dead ends: 414150 [2023-11-29 05:10:53,846 INFO L226 Difference]: Without dead ends: 352327 [2023-11-29 05:10:53,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1124 GetRequests, 1044 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1715 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1594, Invalid=5048, Unknown=0, NotChecked=0, Total=6642 [2023-11-29 05:10:53,908 INFO L413 NwaCegarLoop]: 819 mSDtfsCounter, 5918 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 3779 mSolverCounterSat, 1822 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5945 SdHoareTripleChecker+Valid, 4777 SdHoareTripleChecker+Invalid, 5601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1822 IncrementalHoareTripleChecker+Valid, 3779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-29 05:10:53,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5945 Valid, 4777 Invalid, 5601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1822 Valid, 3779 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-29 05:10:54,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352327 states. [2023-11-29 05:11:01,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352327 to 172238. [2023-11-29 05:11:01,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172238 states, 166562 states have (on average 1.6130630035662397) internal successors, (268675), 166754 states have internal predecessors, (268675), 5007 states have call successors, (5007), 668 states have call predecessors, (5007), 668 states have return successors, (5007), 4815 states have call predecessors, (5007), 5007 states have call successors, (5007) [2023-11-29 05:11:01,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172238 states to 172238 states and 278689 transitions. [2023-11-29 05:11:01,601 INFO L78 Accepts]: Start accepts. Automaton has 172238 states and 278689 transitions. Word has length 531 [2023-11-29 05:11:01,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:11:01,601 INFO L495 AbstractCegarLoop]: Abstraction has 172238 states and 278689 transitions. [2023-11-29 05:11:01,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.96) internal successors, (224), 25 states have internal predecessors, (224), 4 states have call successors, (130), 3 states have call predecessors, (130), 6 states have return successors, (131), 4 states have call predecessors, (131), 4 states have call successors, (131) [2023-11-29 05:11:01,602 INFO L276 IsEmpty]: Start isEmpty. Operand 172238 states and 278689 transitions. [2023-11-29 05:11:01,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2023-11-29 05:11:01,634 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:11:01,635 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:11:01,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-29 05:11:01,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 05:11:01,835 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:11:01,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:11:01,836 INFO L85 PathProgramCache]: Analyzing trace with hash -359390574, now seen corresponding path program 1 times [2023-11-29 05:11:01,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:11:01,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272406680] [2023-11-29 05:11:01,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:11:01,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:11:01,887 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:11:01,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [724634730] [2023-11-29 05:11:01,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:11:01,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:11:01,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:11:01,889 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:11:01,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 05:11:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:11:02,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 1291 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 05:11:02,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:11:03,317 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-11-29 05:11:03,317 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:11:03,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:11:03,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272406680] [2023-11-29 05:11:03,318 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:11:03,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724634730] [2023-11-29 05:11:03,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724634730] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:11:03,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:11:03,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 05:11:03,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144559012] [2023-11-29 05:11:03,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:11:03,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 05:11:03,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:11:03,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 05:11:03,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 05:11:03,320 INFO L87 Difference]: Start difference. First operand 172238 states and 278689 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-11-29 05:11:09,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 05:11:13,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:11:13,047 INFO L93 Difference]: Finished difference Result 387758 states and 627044 transitions. [2023-11-29 05:11:13,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:11:13,047 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 532 [2023-11-29 05:11:13,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:11:13,359 INFO L225 Difference]: With dead ends: 387758 [2023-11-29 05:11:13,359 INFO L226 Difference]: Without dead ends: 215823 [2023-11-29 05:11:13,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 529 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 05:11:13,421 INFO L413 NwaCegarLoop]: 632 mSDtfsCounter, 521 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 159 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 1490 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:11:13,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 1490 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 85 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2023-11-29 05:11:13,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215823 states. [2023-11-29 05:11:19,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215823 to 186358. [2023-11-29 05:11:19,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186358 states, 180182 states have (on average 1.6112319765570369) internal successors, (290315), 180388 states have internal predecessors, (290315), 5443 states have call successors, (5443), 732 states have call predecessors, (5443), 732 states have return successors, (5443), 5237 states have call predecessors, (5443), 5443 states have call successors, (5443) [2023-11-29 05:11:19,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186358 states to 186358 states and 301201 transitions. [2023-11-29 05:11:19,665 INFO L78 Accepts]: Start accepts. Automaton has 186358 states and 301201 transitions. Word has length 532 [2023-11-29 05:11:19,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:11:19,665 INFO L495 AbstractCegarLoop]: Abstraction has 186358 states and 301201 transitions. [2023-11-29 05:11:19,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-11-29 05:11:19,665 INFO L276 IsEmpty]: Start isEmpty. Operand 186358 states and 301201 transitions. [2023-11-29 05:11:19,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2023-11-29 05:11:19,701 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:11:19,701 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:11:19,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 05:11:19,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:11:19,902 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:11:19,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:11:19,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1143195092, now seen corresponding path program 1 times [2023-11-29 05:11:19,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:11:19,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456470478] [2023-11-29 05:11:19,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:11:19,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:11:19,954 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:11:19,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [623330491] [2023-11-29 05:11:19,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:11:19,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:11:19,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:11:19,956 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:11:19,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 05:11:20,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:11:20,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 1292 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 05:11:20,426 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:11:21,240 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 7643 proven. 261 refuted. 0 times theorem prover too weak. 4420 trivial. 0 not checked. [2023-11-29 05:11:21,240 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:11:21,710 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 123 proven. 111 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2023-11-29 05:11:21,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:11:21,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456470478] [2023-11-29 05:11:21,710 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:11:21,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [623330491] [2023-11-29 05:11:21,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [623330491] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:11:21,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:11:21,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2023-11-29 05:11:21,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781050823] [2023-11-29 05:11:21,711 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:11:21,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 05:11:21,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:11:21,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 05:11:21,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2023-11-29 05:11:21,714 INFO L87 Difference]: Start difference. First operand 186358 states and 301201 transitions. Second operand has 19 states, 19 states have (on average 11.842105263157896) internal successors, (225), 19 states have internal predecessors, (225), 4 states have call successors, (130), 3 states have call predecessors, (130), 6 states have return successors, (131), 4 states have call predecessors, (131), 4 states have call successors, (131) [2023-11-29 05:11:27,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 05:11:44,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:11:44,948 INFO L93 Difference]: Finished difference Result 398530 states and 631001 transitions. [2023-11-29 05:11:44,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-29 05:11:44,949 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 11.842105263157896) internal successors, (225), 19 states have internal predecessors, (225), 4 states have call successors, (130), 3 states have call predecessors, (130), 6 states have return successors, (131), 4 states have call predecessors, (131), 4 states have call successors, (131) Word has length 532 [2023-11-29 05:11:44,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:11:45,324 INFO L225 Difference]: With dead ends: 398530 [2023-11-29 05:11:45,324 INFO L226 Difference]: Without dead ends: 212561 [2023-11-29 05:11:45,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1101 GetRequests, 1050 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=760, Invalid=1996, Unknown=0, NotChecked=0, Total=2756 [2023-11-29 05:11:45,392 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 3444 mSDsluCounter, 2066 mSDsCounter, 0 mSdLazyCounter, 2259 mSolverCounterSat, 1443 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3446 SdHoareTripleChecker+Valid, 2442 SdHoareTripleChecker+Invalid, 3703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1443 IncrementalHoareTripleChecker+Valid, 2259 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-11-29 05:11:45,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3446 Valid, 2442 Invalid, 3703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1443 Valid, 2259 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2023-11-29 05:11:45,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212561 states. [2023-11-29 05:11:51,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212561 to 111311. [2023-11-29 05:11:51,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111311 states, 105135 states have (on average 1.5719979074523232) internal successors, (165272), 105341 states have internal predecessors, (165272), 5443 states have call successors, (5443), 732 states have call predecessors, (5443), 732 states have return successors, (5443), 5237 states have call predecessors, (5443), 5443 states have call successors, (5443) [2023-11-29 05:11:51,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111311 states to 111311 states and 176158 transitions. [2023-11-29 05:11:51,815 INFO L78 Accepts]: Start accepts. Automaton has 111311 states and 176158 transitions. Word has length 532 [2023-11-29 05:11:51,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:11:51,816 INFO L495 AbstractCegarLoop]: Abstraction has 111311 states and 176158 transitions. [2023-11-29 05:11:51,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.842105263157896) internal successors, (225), 19 states have internal predecessors, (225), 4 states have call successors, (130), 3 states have call predecessors, (130), 6 states have return successors, (131), 4 states have call predecessors, (131), 4 states have call successors, (131) [2023-11-29 05:11:51,816 INFO L276 IsEmpty]: Start isEmpty. Operand 111311 states and 176158 transitions. [2023-11-29 05:11:51,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2023-11-29 05:11:51,833 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:11:51,834 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:11:51,841 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 05:11:52,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:11:52,034 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:11:52,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:11:52,035 INFO L85 PathProgramCache]: Analyzing trace with hash 519052961, now seen corresponding path program 1 times [2023-11-29 05:11:52,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:11:52,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627602822] [2023-11-29 05:11:52,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:11:52,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:11:52,079 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:11:52,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1717546089] [2023-11-29 05:11:52,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:11:52,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:11:52,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:11:52,081 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:11:52,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 05:11:52,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:11:52,616 INFO L262 TraceCheckSpWp]: Trace formula consists of 1291 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 05:11:52,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:11:54,947 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 7788 proven. 651 refuted. 0 times theorem prover too weak. 3885 trivial. 0 not checked. [2023-11-29 05:11:54,947 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:11:55,706 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 195 proven. 270 refuted. 0 times theorem prover too weak. 11859 trivial. 0 not checked. [2023-11-29 05:11:55,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:11:55,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627602822] [2023-11-29 05:11:55,707 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:11:55,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717546089] [2023-11-29 05:11:55,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717546089] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:11:55,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:11:55,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 26 [2023-11-29 05:11:55,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818227482] [2023-11-29 05:11:55,708 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:11:55,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 05:11:55,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:11:55,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 05:11:55,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=516, Unknown=0, NotChecked=0, Total=650 [2023-11-29 05:11:55,710 INFO L87 Difference]: Start difference. First operand 111311 states and 176158 transitions. Second operand has 26 states, 26 states have (on average 10.153846153846153) internal successors, (264), 25 states have internal predecessors, (264), 7 states have call successors, (157), 5 states have call predecessors, (157), 10 states have return successors, (158), 7 states have call predecessors, (158), 7 states have call successors, (158) [2023-11-29 05:12:08,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:12:08,957 INFO L93 Difference]: Finished difference Result 654569 states and 1063599 transitions. [2023-11-29 05:12:08,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-11-29 05:12:08,958 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 10.153846153846153) internal successors, (264), 25 states have internal predecessors, (264), 7 states have call successors, (157), 5 states have call predecessors, (157), 10 states have return successors, (158), 7 states have call predecessors, (158), 7 states have call successors, (158) Word has length 532 [2023-11-29 05:12:08,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:12:09,613 INFO L225 Difference]: With dead ends: 654569 [2023-11-29 05:12:09,613 INFO L226 Difference]: Without dead ends: 543647 [2023-11-29 05:12:09,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1108 GetRequests, 1041 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1227 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=917, Invalid=3775, Unknown=0, NotChecked=0, Total=4692 [2023-11-29 05:12:09,683 INFO L413 NwaCegarLoop]: 582 mSDtfsCounter, 3490 mSDsluCounter, 4270 mSDsCounter, 0 mSdLazyCounter, 3613 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3490 SdHoareTripleChecker+Valid, 4852 SdHoareTripleChecker+Invalid, 3912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 3613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-29 05:12:09,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3490 Valid, 4852 Invalid, 3912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 3613 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-29 05:12:09,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543647 states. [2023-11-29 05:12:18,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543647 to 112491. [2023-11-29 05:12:18,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112491 states, 106020 states have (on average 1.5656008300320694) internal successors, (165985), 106226 states have internal predecessors, (165985), 5443 states have call successors, (5443), 1027 states have call predecessors, (5443), 1027 states have return successors, (5443), 5237 states have call predecessors, (5443), 5443 states have call successors, (5443) [2023-11-29 05:12:18,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112491 states to 112491 states and 176871 transitions. [2023-11-29 05:12:18,906 INFO L78 Accepts]: Start accepts. Automaton has 112491 states and 176871 transitions. Word has length 532 [2023-11-29 05:12:18,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:12:18,907 INFO L495 AbstractCegarLoop]: Abstraction has 112491 states and 176871 transitions. [2023-11-29 05:12:18,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 10.153846153846153) internal successors, (264), 25 states have internal predecessors, (264), 7 states have call successors, (157), 5 states have call predecessors, (157), 10 states have return successors, (158), 7 states have call predecessors, (158), 7 states have call successors, (158) [2023-11-29 05:12:18,907 INFO L276 IsEmpty]: Start isEmpty. Operand 112491 states and 176871 transitions. [2023-11-29 05:12:18,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2023-11-29 05:12:18,928 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:12:18,928 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:12:18,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-29 05:12:19,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 05:12:19,129 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:12:19,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:12:19,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1324157330, now seen corresponding path program 1 times [2023-11-29 05:12:19,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:12:19,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614254188] [2023-11-29 05:12:19,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:12:19,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:12:19,189 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:12:19,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2072553330] [2023-11-29 05:12:19,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:12:19,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:12:19,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:12:19,190 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:12:19,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 05:12:19,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:19,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 1294 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 05:12:19,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:12:21,598 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 7827 proven. 360 refuted. 0 times theorem prover too weak. 4137 trivial. 0 not checked. [2023-11-29 05:12:21,598 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:12:22,190 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 324 proven. 369 refuted. 0 times theorem prover too weak. 11631 trivial. 0 not checked. [2023-11-29 05:12:22,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:12:22,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614254188] [2023-11-29 05:12:22,191 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:12:22,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072553330] [2023-11-29 05:12:22,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072553330] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:12:22,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:12:22,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2023-11-29 05:12:22,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318627335] [2023-11-29 05:12:22,192 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:12:22,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 05:12:22,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:12:22,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 05:12:22,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2023-11-29 05:12:22,195 INFO L87 Difference]: Start difference. First operand 112491 states and 176871 transitions. Second operand has 26 states, 26 states have (on average 8.5) internal successors, (221), 26 states have internal predecessors, (221), 8 states have call successors, (158), 5 states have call predecessors, (158), 11 states have return successors, (158), 8 states have call predecessors, (158), 8 states have call successors, (158) [2023-11-29 05:12:42,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:12:42,911 INFO L93 Difference]: Finished difference Result 352113 states and 554568 transitions. [2023-11-29 05:12:42,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 05:12:42,912 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 8.5) internal successors, (221), 26 states have internal predecessors, (221), 8 states have call successors, (158), 5 states have call predecessors, (158), 11 states have return successors, (158), 8 states have call predecessors, (158), 8 states have call successors, (158) Word has length 533 [2023-11-29 05:12:42,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:12:43,304 INFO L225 Difference]: With dead ends: 352113 [2023-11-29 05:12:43,304 INFO L226 Difference]: Without dead ends: 239937 [2023-11-29 05:12:43,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1095 GetRequests, 1046 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 736 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=742, Invalid=1808, Unknown=0, NotChecked=0, Total=2550 [2023-11-29 05:12:43,354 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 3085 mSDsluCounter, 3971 mSDsCounter, 0 mSdLazyCounter, 3443 mSolverCounterSat, 735 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3099 SdHoareTripleChecker+Valid, 4316 SdHoareTripleChecker+Invalid, 4178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 735 IncrementalHoareTripleChecker+Valid, 3443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-29 05:12:43,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3099 Valid, 4316 Invalid, 4178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [735 Valid, 3443 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-29 05:12:43,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239937 states. [2023-11-29 05:12:58,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239937 to 177038. [2023-11-29 05:12:58,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177038 states, 164184 states have (on average 1.557587828290211) internal successors, (255731), 164596 states have internal predecessors, (255731), 10807 states have call successors, (10807), 2046 states have call predecessors, (10807), 2046 states have return successors, (10807), 10395 states have call predecessors, (10807), 10807 states have call successors, (10807) [2023-11-29 05:12:58,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177038 states to 177038 states and 277345 transitions. [2023-11-29 05:12:58,661 INFO L78 Accepts]: Start accepts. Automaton has 177038 states and 277345 transitions. Word has length 533 [2023-11-29 05:12:58,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:12:58,661 INFO L495 AbstractCegarLoop]: Abstraction has 177038 states and 277345 transitions. [2023-11-29 05:12:58,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 8.5) internal successors, (221), 26 states have internal predecessors, (221), 8 states have call successors, (158), 5 states have call predecessors, (158), 11 states have return successors, (158), 8 states have call predecessors, (158), 8 states have call successors, (158) [2023-11-29 05:12:58,662 INFO L276 IsEmpty]: Start isEmpty. Operand 177038 states and 277345 transitions. [2023-11-29 05:12:58,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2023-11-29 05:12:58,675 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:12:58,675 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:12:58,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 05:12:58,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 05:12:58,876 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:12:58,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:12:58,876 INFO L85 PathProgramCache]: Analyzing trace with hash 2055308611, now seen corresponding path program 1 times [2023-11-29 05:12:58,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:12:58,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131128848] [2023-11-29 05:12:58,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:12:58,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:12:58,933 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:12:58,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1921131423] [2023-11-29 05:12:58,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:12:58,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:12:58,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:12:58,934 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:12:58,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 05:12:59,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:12:59,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 1296 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 05:12:59,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:13:00,230 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 5688 proven. 81 refuted. 0 times theorem prover too weak. 6555 trivial. 0 not checked. [2023-11-29 05:13:00,230 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:13:00,618 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 153 proven. 81 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2023-11-29 05:13:00,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:13:00,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131128848] [2023-11-29 05:13:00,619 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:13:00,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921131423] [2023-11-29 05:13:00,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921131423] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:13:00,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:13:00,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-11-29 05:13:00,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211693362] [2023-11-29 05:13:00,620 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:13:00,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 05:13:00,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:13:00,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 05:13:00,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-11-29 05:13:00,623 INFO L87 Difference]: Start difference. First operand 177038 states and 277345 transitions. Second operand has 14 states, 14 states have (on average 14.785714285714286) internal successors, (207), 14 states have internal predecessors, (207), 4 states have call successors, (158), 3 states have call predecessors, (158), 5 states have return successors, (158), 4 states have call predecessors, (158), 4 states have call successors, (158) [2023-11-29 05:13:19,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:13:19,547 INFO L93 Difference]: Finished difference Result 460272 states and 726043 transitions. [2023-11-29 05:13:19,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 05:13:19,548 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 14.785714285714286) internal successors, (207), 14 states have internal predecessors, (207), 4 states have call successors, (158), 3 states have call predecessors, (158), 5 states have return successors, (158), 4 states have call predecessors, (158), 4 states have call successors, (158) Word has length 535 [2023-11-29 05:13:19,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:13:19,914 INFO L225 Difference]: With dead ends: 460272 [2023-11-29 05:13:19,914 INFO L226 Difference]: Without dead ends: 283467 [2023-11-29 05:13:20,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1080 GetRequests, 1058 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=161, Invalid=391, Unknown=0, NotChecked=0, Total=552 [2023-11-29 05:13:20,011 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 1583 mSDsluCounter, 3050 mSDsCounter, 0 mSdLazyCounter, 1669 mSolverCounterSat, 549 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1661 SdHoareTripleChecker+Valid, 3422 SdHoareTripleChecker+Invalid, 2218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 549 IncrementalHoareTripleChecker+Valid, 1669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 05:13:20,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1661 Valid, 3422 Invalid, 2218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [549 Valid, 1669 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 05:13:20,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283467 states. [2023-11-29 05:13:34,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283467 to 177042. [2023-11-29 05:13:34,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177042 states, 164187 states have (on average 1.5575654588974766) internal successors, (255732), 164599 states have internal predecessors, (255732), 10807 states have call successors, (10807), 2047 states have call predecessors, (10807), 2047 states have return successors, (10807), 10395 states have call predecessors, (10807), 10807 states have call successors, (10807) [2023-11-29 05:13:35,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177042 states to 177042 states and 277346 transitions. [2023-11-29 05:13:35,243 INFO L78 Accepts]: Start accepts. Automaton has 177042 states and 277346 transitions. Word has length 535 [2023-11-29 05:13:35,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:13:35,243 INFO L495 AbstractCegarLoop]: Abstraction has 177042 states and 277346 transitions. [2023-11-29 05:13:35,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 14.785714285714286) internal successors, (207), 14 states have internal predecessors, (207), 4 states have call successors, (158), 3 states have call predecessors, (158), 5 states have return successors, (158), 4 states have call predecessors, (158), 4 states have call successors, (158) [2023-11-29 05:13:35,244 INFO L276 IsEmpty]: Start isEmpty. Operand 177042 states and 277346 transitions. [2023-11-29 05:13:35,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2023-11-29 05:13:35,262 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:13:35,263 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:13:35,270 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-29 05:13:35,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:13:35,464 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:13:35,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:13:35,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1284575045, now seen corresponding path program 1 times [2023-11-29 05:13:35,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:13:35,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674594438] [2023-11-29 05:13:35,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:13:35,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:13:35,509 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:13:35,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [123209007] [2023-11-29 05:13:35,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:13:35,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:13:35,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:13:35,510 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:13:35,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 05:13:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:13:36,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 1296 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 05:13:36,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:13:37,414 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-11-29 05:13:37,414 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:13:37,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:13:37,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674594438] [2023-11-29 05:13:37,414 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:13:37,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123209007] [2023-11-29 05:13:37,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123209007] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:13:37,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:13:37,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 05:13:37,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038706556] [2023-11-29 05:13:37,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:13:37,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 05:13:37,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:13:37,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 05:13:37,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 05:13:37,417 INFO L87 Difference]: Start difference. First operand 177042 states and 277346 transitions. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 4 states have internal predecessors, (143), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-11-29 05:14:01,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:14:01,504 INFO L93 Difference]: Finished difference Result 482640 states and 753072 transitions. [2023-11-29 05:14:01,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 05:14:01,505 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 4 states have internal predecessors, (143), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 535 [2023-11-29 05:14:01,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:14:01,943 INFO L225 Difference]: With dead ends: 482640 [2023-11-29 05:14:01,943 INFO L226 Difference]: Without dead ends: 305921 [2023-11-29 05:14:02,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 531 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:14:02,218 INFO L413 NwaCegarLoop]: 529 mSDtfsCounter, 455 mSDsluCounter, 1217 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 1746 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 05:14:02,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 1746 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 05:14:02,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305921 states. [2023-11-29 05:14:30,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305921 to 305919. [2023-11-29 05:14:30,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305919 states, 283850 states have (on average 1.546654923375022) internal successors, (439018), 284466 states have internal predecessors, (439018), 18207 states have call successors, (18207), 3861 states have call predecessors, (18207), 3861 states have return successors, (18207), 17591 states have call predecessors, (18207), 18207 states have call successors, (18207) [2023-11-29 05:14:31,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305919 states to 305919 states and 475432 transitions. [2023-11-29 05:14:31,297 INFO L78 Accepts]: Start accepts. Automaton has 305919 states and 475432 transitions. Word has length 535 [2023-11-29 05:14:31,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:14:31,298 INFO L495 AbstractCegarLoop]: Abstraction has 305919 states and 475432 transitions. [2023-11-29 05:14:31,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 4 states have internal predecessors, (143), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-11-29 05:14:31,298 INFO L276 IsEmpty]: Start isEmpty. Operand 305919 states and 475432 transitions. [2023-11-29 05:14:31,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2023-11-29 05:14:31,317 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:14:31,317 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:14:31,326 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-29 05:14:31,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:14:31,518 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:14:31,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:14:31,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1752148139, now seen corresponding path program 1 times [2023-11-29 05:14:31,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:14:31,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400592120] [2023-11-29 05:14:31,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:31,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:14:31,575 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:14:31,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1983321226] [2023-11-29 05:14:31,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:14:31,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:14:31,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:14:31,577 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:14:31,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 05:14:32,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:14:32,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 1296 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 05:14:32,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:14:32,149 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12324 trivial. 0 not checked. [2023-11-29 05:14:32,149 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 05:14:32,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:14:32,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400592120] [2023-11-29 05:14:32,149 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:14:32,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983321226] [2023-11-29 05:14:32,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983321226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 05:14:32,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 05:14:32,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 05:14:32,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425827542] [2023-11-29 05:14:32,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 05:14:32,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 05:14:32,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:14:32,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 05:14:32,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 05:14:32,152 INFO L87 Difference]: Start difference. First operand 305919 states and 475432 transitions. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-11-29 05:15:33,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:15:33,869 INFO L93 Difference]: Finished difference Result 956643 states and 1486361 transitions. [2023-11-29 05:15:33,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 05:15:33,870 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) Word has length 535 [2023-11-29 05:15:33,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:15:35,080 INFO L225 Difference]: With dead ends: 956643 [2023-11-29 05:15:35,080 INFO L226 Difference]: Without dead ends: 651047 [2023-11-29 05:15:35,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 532 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 05:15:35,294 INFO L413 NwaCegarLoop]: 888 mSDtfsCounter, 2006 mSDsluCounter, 2481 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2006 SdHoareTripleChecker+Valid, 3369 SdHoareTripleChecker+Invalid, 1299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 05:15:35,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2006 Valid, 3369 Invalid, 1299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [648 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 05:15:35,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651047 states. [2023-11-29 05:16:01,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651047 to 251439. [2023-11-29 05:16:02,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251439 states, 235506 states have (on average 1.5280544869345154) internal successors, (359866), 235946 states have internal predecessors, (359866), 13119 states have call successors, (13119), 2813 states have call predecessors, (13119), 2813 states have return successors, (13119), 12679 states have call predecessors, (13119), 13119 states have call successors, (13119) [2023-11-29 05:16:02,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251439 states to 251439 states and 386104 transitions. [2023-11-29 05:16:02,647 INFO L78 Accepts]: Start accepts. Automaton has 251439 states and 386104 transitions. Word has length 535 [2023-11-29 05:16:02,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:16:02,647 INFO L495 AbstractCegarLoop]: Abstraction has 251439 states and 386104 transitions. [2023-11-29 05:16:02,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 1 states have call successors, (79), 1 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 1 states have call successors, (79) [2023-11-29 05:16:02,648 INFO L276 IsEmpty]: Start isEmpty. Operand 251439 states and 386104 transitions. [2023-11-29 05:16:02,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2023-11-29 05:16:02,669 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:16:02,670 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:16:02,678 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-29 05:16:02,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:16:02,870 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:16:02,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:16:02,871 INFO L85 PathProgramCache]: Analyzing trace with hash 2031771345, now seen corresponding path program 1 times [2023-11-29 05:16:02,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:16:02,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826764457] [2023-11-29 05:16:02,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:16:02,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:16:02,926 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:16:02,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [57907365] [2023-11-29 05:16:02,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:16:02,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:16:02,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:16:02,928 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:16:02,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 05:16:03,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:16:03,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 1292 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 05:16:03,676 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:16:04,060 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 4260 proven. 183 refuted. 0 times theorem prover too weak. 7881 trivial. 0 not checked. [2023-11-29 05:16:04,060 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:16:04,379 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 51 proven. 183 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2023-11-29 05:16:04,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 05:16:04,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826764457] [2023-11-29 05:16:04,379 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 05:16:04,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57907365] [2023-11-29 05:16:04,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57907365] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 05:16:04,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:16:04,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 05:16:04,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541113025] [2023-11-29 05:16:04,380 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:16:04,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 05:16:04,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 05:16:04,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 05:16:04,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 05:16:04,383 INFO L87 Difference]: Start difference. First operand 251439 states and 386104 transitions. Second operand has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 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 05:16:07,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:16:07,575 INFO L93 Difference]: Finished difference Result 263598 states and 403934 transitions. [2023-11-29 05:16:07,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 05:16:07,575 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 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 535 [2023-11-29 05:16:07,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:16:07,593 INFO L225 Difference]: With dead ends: 263598 [2023-11-29 05:16:07,593 INFO L226 Difference]: Without dead ends: 12426 [2023-11-29 05:16:07,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1072 GetRequests, 1062 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 05:16:07,671 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 485 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 05:16:07,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 865 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 05:16:07,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12426 states. [2023-11-29 05:16:09,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12426 to 12244. [2023-11-29 05:16:09,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12244 states, 10866 states have (on average 1.4561936315111357) internal successors, (15823), 10882 states have internal predecessors, (15823), 1071 states have call successors, (1071), 306 states have call predecessors, (1071), 306 states have return successors, (1071), 1055 states have call predecessors, (1071), 1071 states have call successors, (1071) [2023-11-29 05:16:09,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12244 states to 12244 states and 17965 transitions. [2023-11-29 05:16:09,535 INFO L78 Accepts]: Start accepts. Automaton has 12244 states and 17965 transitions. Word has length 535 [2023-11-29 05:16:09,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:16:09,536 INFO L495 AbstractCegarLoop]: Abstraction has 12244 states and 17965 transitions. [2023-11-29 05:16:09,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 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 05:16:09,536 INFO L276 IsEmpty]: Start isEmpty. Operand 12244 states and 17965 transitions. [2023-11-29 05:16:09,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2023-11-29 05:16:09,540 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:16:09,540 INFO L195 NwaCegarLoop]: trace histogram [79, 79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:16:09,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-29 05:16:09,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 05:16:09,741 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 05:16:09,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:16:09,742 INFO L85 PathProgramCache]: Analyzing trace with hash 864522407, now seen corresponding path program 1 times [2023-11-29 05:16:09,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 05:16:09,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890940243] [2023-11-29 05:16:09,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:16:09,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 05:16:09,794 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 05:16:09,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1821890570] [2023-11-29 05:16:09,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:16:09,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 05:16:09,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 05:16:09,796 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 05:16:09,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_446b4ed8-9ef6-4dae-bc37-f4f1cd25e317/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 05:16:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:16:10,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 1299 conjuncts, 56 conjunts are in the unsatisfiable core [2023-11-29 05:16:10,558 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:16:25,093 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 8161 proven. 1350 refuted. 0 times theorem prover too weak. 2813 trivial. 0 not checked. [2023-11-29 05:16:25,093 INFO L327 TraceCheckSpWp]: Computing backward predicates...