./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-35.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/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_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-35.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/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_c099f8ce-4335-47ae-9625-dd227ccf8b91/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 299d219523e0e8430505eb8799431fd2cb8b55f1a08a4fbf5c709cb9d599e48c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:07:12,214 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:07:12,282 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 03:07:12,287 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:07:12,288 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:07:12,313 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:07:12,314 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:07:12,314 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:07:12,315 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:07:12,315 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:07:12,316 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:07:12,316 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:07:12,317 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:07:12,318 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:07:12,318 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:07:12,319 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:07:12,320 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 03:07:12,320 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:07:12,321 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:07:12,321 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:07:12,322 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:07:12,322 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 03:07:12,323 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:07:12,323 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 03:07:12,324 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:07:12,324 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 03:07:12,325 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:07:12,325 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:07:12,325 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:07:12,326 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:07:12,326 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:07:12,327 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:07:12,327 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:07:12,327 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:07:12,328 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 03:07:12,328 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:07:12,328 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:07:12,328 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:07:12,328 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:07:12,329 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 03:07:12,329 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:07:12,329 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:07:12,329 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_c099f8ce-4335-47ae-9625-dd227ccf8b91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 299d219523e0e8430505eb8799431fd2cb8b55f1a08a4fbf5c709cb9d599e48c [2023-11-29 03:07:12,567 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:07:12,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:07:12,594 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:07:12,595 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:07:12,596 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:07:12,597 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-35.i [2023-11-29 03:07:15,459 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:07:15,732 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:07:15,733 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-35.i [2023-11-29 03:07:15,749 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/data/5a87d37db/a26d9b7a34ba4836b989b55f25f7e86d/FLAGb2c26f5e5 [2023-11-29 03:07:15,764 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/data/5a87d37db/a26d9b7a34ba4836b989b55f25f7e86d [2023-11-29 03:07:15,767 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:07:15,769 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:07:15,770 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:07:15,770 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:07:15,776 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:07:15,777 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:07:15" (1/1) ... [2023-11-29 03:07:15,778 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22170f94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:07:15, skipping insertion in model container [2023-11-29 03:07:15,778 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:07:15" (1/1) ... [2023-11-29 03:07:15,842 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:07:15,979 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_c099f8ce-4335-47ae-9625-dd227ccf8b91/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-35.i[916,929] [2023-11-29 03:07:16,220 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:07:16,236 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:07:16,247 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_c099f8ce-4335-47ae-9625-dd227ccf8b91/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-35.i[916,929] [2023-11-29 03:07:16,354 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:07:16,378 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:07:16,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:07:16 WrapperNode [2023-11-29 03:07:16,379 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:07:16,380 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:07:16,380 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:07:16,380 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:07:16,389 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:07:16" (1/1) ... [2023-11-29 03:07:16,420 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:07:16" (1/1) ... [2023-11-29 03:07:16,546 INFO L138 Inliner]: procedures = 26, calls = 92, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 761 [2023-11-29 03:07:16,547 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:07:16,548 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:07:16,548 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:07:16,548 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:07:16,561 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:07:16" (1/1) ... [2023-11-29 03:07:16,562 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:07:16" (1/1) ... [2023-11-29 03:07:16,586 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:07:16" (1/1) ... [2023-11-29 03:07:16,637 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 03:07:16,637 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:07:16" (1/1) ... [2023-11-29 03:07:16,637 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:07:16" (1/1) ... [2023-11-29 03:07:16,665 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:07:16" (1/1) ... [2023-11-29 03:07:16,675 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:07:16" (1/1) ... [2023-11-29 03:07:16,684 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:07:16" (1/1) ... [2023-11-29 03:07:16,694 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:07:16" (1/1) ... [2023-11-29 03:07:16,705 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:07:16,707 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:07:16,707 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:07:16,707 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:07:16,708 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:07:16" (1/1) ... [2023-11-29 03:07:16,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:07:16,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:07:16,734 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:07:16,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:07:16,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:07:16,772 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 03:07:16,773 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 03:07:16,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 03:07:16,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:07:16,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:07:16,920 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:07:16,922 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:07:17,965 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:07:18,016 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:07:18,017 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 03:07:18,017 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:07:18 BoogieIcfgContainer [2023-11-29 03:07:18,018 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:07:18,021 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:07:18,021 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:07:18,024 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:07:18,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:07:15" (1/3) ... [2023-11-29 03:07:18,025 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e199c23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:07:18, skipping insertion in model container [2023-11-29 03:07:18,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:07:16" (2/3) ... [2023-11-29 03:07:18,026 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e199c23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:07:18, skipping insertion in model container [2023-11-29 03:07:18,026 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:07:18" (3/3) ... [2023-11-29 03:07:18,027 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-35.i [2023-11-29 03:07:18,048 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:07:18,049 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 03:07:18,113 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:07:18,120 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;@71c58810, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:07:18,120 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 03:07:18,127 INFO L276 IsEmpty]: Start isEmpty. Operand has 284 states, 202 states have (on average 1.5643564356435644) internal successors, (316), 203 states have internal predecessors, (316), 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 03:07:18,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-11-29 03:07:18,164 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:07:18,165 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 03:07:18,166 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:07:18,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:07:18,172 INFO L85 PathProgramCache]: Analyzing trace with hash 703842177, now seen corresponding path program 1 times [2023-11-29 03:07:18,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:07:18,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645752793] [2023-11-29 03:07:18,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:18,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:07:18,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:18,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:07:18,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645752793] [2023-11-29 03:07:18,593 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 03:07:18,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876986059] [2023-11-29 03:07:18,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:18,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:07:18,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:07:18,595 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:07:18,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 03:07:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:19,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 1350 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 03:07:19,166 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:07:19,271 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 12168 trivial. 0 not checked. [2023-11-29 03:07:19,271 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:07:19,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876986059] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:07:19,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:07:19,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 03:07:19,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276596282] [2023-11-29 03:07:19,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:07:19,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 03:07:19,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:07:19,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 03:07:19,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 03:07:19,309 INFO L87 Difference]: Start difference. First operand has 284 states, 202 states have (on average 1.5643564356435644) internal successors, (316), 203 states have internal predecessors, (316), 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 2 states, 2 states have (on average 70.5) internal successors, (141), 2 states have internal predecessors, (141), 2 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 2 states have call successors, (79) [2023-11-29 03:07:19,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:07:19,396 INFO L93 Difference]: Finished difference Result 559 states and 1014 transitions. [2023-11-29 03:07:19,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 03:07:19,399 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 70.5) internal successors, (141), 2 states have internal predecessors, (141), 2 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 2 states have call successors, (79) Word has length 531 [2023-11-29 03:07:19,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:07:19,410 INFO L225 Difference]: With dead ends: 559 [2023-11-29 03:07:19,410 INFO L226 Difference]: Without dead ends: 276 [2023-11-29 03:07:19,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 530 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 03:07:19,421 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:07:19,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 452 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:07:19,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2023-11-29 03:07:19,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2023-11-29 03:07:19,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 195 states have (on average 1.523076923076923) internal successors, (297), 195 states have internal predecessors, (297), 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 03:07:19,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 455 transitions. [2023-11-29 03:07:19,503 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 455 transitions. Word has length 531 [2023-11-29 03:07:19,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:07:19,503 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 455 transitions. [2023-11-29 03:07:19,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 70.5) internal successors, (141), 2 states have internal predecessors, (141), 2 states have call successors, (79), 2 states have call predecessors, (79), 1 states have return successors, (79), 1 states have call predecessors, (79), 2 states have call successors, (79) [2023-11-29 03:07:19,504 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 455 transitions. [2023-11-29 03:07:19,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-11-29 03:07:19,518 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:07:19,518 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 03:07:19,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 03:07:19,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 03:07:19,720 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:07:19,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:07:19,720 INFO L85 PathProgramCache]: Analyzing trace with hash 373107791, now seen corresponding path program 1 times [2023-11-29 03:07:19,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:07:19,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448370072] [2023-11-29 03:07:19,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:19,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:07:19,868 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:07:19,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1017632923] [2023-11-29 03:07:19,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:19,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:07:19,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:07:19,871 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:07:19,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 03:07:20,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:20,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 1352 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 03:07:20,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:07:20,551 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 03:07:20,551 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:07:20,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:07:20,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448370072] [2023-11-29 03:07:20,552 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:07:20,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017632923] [2023-11-29 03:07:20,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017632923] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:07:20,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:07:20,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:07:20,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802883423] [2023-11-29 03:07:20,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:07:20,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:07:20,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:07:20,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:07:20,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:07:20,558 INFO L87 Difference]: Start difference. First operand 276 states and 455 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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 03:07:20,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:07:20,717 INFO L93 Difference]: Finished difference Result 826 states and 1363 transitions. [2023-11-29 03:07:20,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:07:20,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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 531 [2023-11-29 03:07:20,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:07:20,729 INFO L225 Difference]: With dead ends: 826 [2023-11-29 03:07:20,729 INFO L226 Difference]: Without dead ends: 551 [2023-11-29 03:07:20,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 529 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 03:07:20,732 INFO L413 NwaCegarLoop]: 694 mSDtfsCounter, 413 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:07:20,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 1126 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:07:20,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2023-11-29 03:07:20,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 549. [2023-11-29 03:07:20,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 388 states have (on average 1.5128865979381443) internal successors, (587), 388 states have internal predecessors, (587), 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 03:07:20,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 903 transitions. [2023-11-29 03:07:20,863 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 903 transitions. Word has length 531 [2023-11-29 03:07:20,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:07:20,866 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 903 transitions. [2023-11-29 03:07:20,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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 03:07:20,866 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 903 transitions. [2023-11-29 03:07:20,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-11-29 03:07:20,873 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:07:20,873 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 03:07:20,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 03:07:21,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:07:21,074 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:07:21,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:07:21,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1472259375, now seen corresponding path program 1 times [2023-11-29 03:07:21,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:07:21,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642195689] [2023-11-29 03:07:21,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:21,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:07:21,183 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:07:21,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1660352835] [2023-11-29 03:07:21,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:21,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:07:21,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:07:21,185 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:07:21,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 03:07:21,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:21,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 1353 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 03:07:21,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:07:21,720 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 03:07:21,720 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:07:21,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:07:21,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642195689] [2023-11-29 03:07:21,721 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:07:21,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660352835] [2023-11-29 03:07:21,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660352835] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:07:21,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:07:21,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:07:21,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385867563] [2023-11-29 03:07:21,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:07:21,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:07:21,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:07:21,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:07:21,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:07:21,725 INFO L87 Difference]: Start difference. First operand 549 states and 903 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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 03:07:21,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:07:21,887 INFO L93 Difference]: Finished difference Result 1457 states and 2401 transitions. [2023-11-29 03:07:21,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:07:21,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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 531 [2023-11-29 03:07:21,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:07:21,899 INFO L225 Difference]: With dead ends: 1457 [2023-11-29 03:07:21,899 INFO L226 Difference]: Without dead ends: 909 [2023-11-29 03:07:21,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 529 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 03:07:21,902 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 298 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:07:21,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 897 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:07:21,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2023-11-29 03:07:21,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 905. [2023-11-29 03:07:21,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 680 states have (on average 1.5441176470588236) internal successors, (1050), 682 states have internal predecessors, (1050), 220 states have call successors, (220), 4 states have call predecessors, (220), 4 states have return successors, (220), 218 states have call predecessors, (220), 220 states have call successors, (220) [2023-11-29 03:07:21,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1490 transitions. [2023-11-29 03:07:21,990 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1490 transitions. Word has length 531 [2023-11-29 03:07:21,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:07:21,992 INFO L495 AbstractCegarLoop]: Abstraction has 905 states and 1490 transitions. [2023-11-29 03:07:21,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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 03:07:21,993 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1490 transitions. [2023-11-29 03:07:21,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-11-29 03:07:21,998 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:07:21,998 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 03:07:22,006 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 03:07:22,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:07:22,199 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:07:22,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:07:22,200 INFO L85 PathProgramCache]: Analyzing trace with hash -73274675, now seen corresponding path program 1 times [2023-11-29 03:07:22,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:07:22,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333843145] [2023-11-29 03:07:22,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:22,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:07:22,294 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:07:22,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [342448453] [2023-11-29 03:07:22,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:22,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:07:22,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:07:22,296 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:07:22,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 03:07:22,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:22,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 1351 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 03:07:22,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:07:22,842 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 03:07:22,842 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:07:22,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:07:22,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333843145] [2023-11-29 03:07:22,842 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:07:22,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342448453] [2023-11-29 03:07:22,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342448453] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:07:22,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:07:22,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:07:22,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184487023] [2023-11-29 03:07:22,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:07:22,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:07:22,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:07:22,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:07:22,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:07:22,847 INFO L87 Difference]: Start difference. First operand 905 states and 1490 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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 03:07:22,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:07:22,948 INFO L93 Difference]: Finished difference Result 2405 states and 3954 transitions. [2023-11-29 03:07:22,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:07:22,949 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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 531 [2023-11-29 03:07:22,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:07:22,962 INFO L225 Difference]: With dead ends: 2405 [2023-11-29 03:07:22,962 INFO L226 Difference]: Without dead ends: 1501 [2023-11-29 03:07:22,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 529 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 03:07:22,966 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 246 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:07:22,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 884 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 03:07:22,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1501 states. [2023-11-29 03:07:23,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1501 to 1495. [2023-11-29 03:07:23,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1495 states, 1150 states have (on average 1.5478260869565217) internal successors, (1780), 1156 states have internal predecessors, (1780), 336 states have call successors, (336), 8 states have call predecessors, (336), 8 states have return successors, (336), 330 states have call predecessors, (336), 336 states have call successors, (336) [2023-11-29 03:07:23,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1495 states to 1495 states and 2452 transitions. [2023-11-29 03:07:23,097 INFO L78 Accepts]: Start accepts. Automaton has 1495 states and 2452 transitions. Word has length 531 [2023-11-29 03:07:23,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:07:23,099 INFO L495 AbstractCegarLoop]: Abstraction has 1495 states and 2452 transitions. [2023-11-29 03:07:23,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 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 03:07:23,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1495 states and 2452 transitions. [2023-11-29 03:07:23,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2023-11-29 03:07:23,106 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:07:23,107 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 03:07:23,116 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 03:07:23,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:07:23,309 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:07:23,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:07:23,310 INFO L85 PathProgramCache]: Analyzing trace with hash 487425103, now seen corresponding path program 1 times [2023-11-29 03:07:23,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:07:23,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343495599] [2023-11-29 03:07:23,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:23,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:07:23,407 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:07:23,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1838578807] [2023-11-29 03:07:23,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:23,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:07:23,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:07:23,409 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:07:23,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 03:07:23,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:23,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 1352 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 03:07:23,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:07:24,764 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 03:07:24,765 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:07:24,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:07:24,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343495599] [2023-11-29 03:07:24,765 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:07:24,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838578807] [2023-11-29 03:07:24,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838578807] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:07:24,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:07:24,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:07:24,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767224724] [2023-11-29 03:07:24,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:07:24,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:07:24,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:07:24,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:07:24,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:07:24,770 INFO L87 Difference]: Start difference. First operand 1495 states and 2452 transitions. Second operand has 5 states, 5 states have (on average 27.8) internal successors, (139), 4 states have internal predecessors, (139), 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 03:07:25,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:07:25,532 INFO L93 Difference]: Finished difference Result 4915 states and 8076 transitions. [2023-11-29 03:07:25,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:07:25,534 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 4 states have internal predecessors, (139), 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 531 [2023-11-29 03:07:25,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:07:25,560 INFO L225 Difference]: With dead ends: 4915 [2023-11-29 03:07:25,560 INFO L226 Difference]: Without dead ends: 3421 [2023-11-29 03:07:25,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 527 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:07:25,567 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 537 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 03:07:25,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [537 Valid, 1624 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 03:07:25,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3421 states. [2023-11-29 03:07:25,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3421 to 1683. [2023-11-29 03:07:25,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1256 states have (on average 1.5302547770700636) internal successors, (1922), 1262 states have internal predecessors, (1922), 415 states have call successors, (415), 11 states have call predecessors, (415), 11 states have return successors, (415), 409 states have call predecessors, (415), 415 states have call successors, (415) [2023-11-29 03:07:25,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 2752 transitions. [2023-11-29 03:07:25,791 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 2752 transitions. Word has length 531 [2023-11-29 03:07:25,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:07:25,792 INFO L495 AbstractCegarLoop]: Abstraction has 1683 states and 2752 transitions. [2023-11-29 03:07:25,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.8) internal successors, (139), 4 states have internal predecessors, (139), 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 03:07:25,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 2752 transitions. [2023-11-29 03:07:25,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2023-11-29 03:07:25,799 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:07:25,800 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 03:07:25,809 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 03:07:26,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:07:26,001 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:07:26,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:07:26,001 INFO L85 PathProgramCache]: Analyzing trace with hash -650098637, now seen corresponding path program 1 times [2023-11-29 03:07:26,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:07:26,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585518460] [2023-11-29 03:07:26,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:26,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:07:26,118 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:07:26,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1428582243] [2023-11-29 03:07:26,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:26,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:07:26,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:07:26,120 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:07:26,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 03:07:26,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:26,669 INFO L262 TraceCheckSpWp]: Trace formula consists of 1349 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:07:26,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:07:26,862 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 03:07:26,863 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:07:26,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:07:26,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585518460] [2023-11-29 03:07:26,863 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:07:26,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428582243] [2023-11-29 03:07:26,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428582243] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:07:26,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:07:26,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:07:26,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106933477] [2023-11-29 03:07:26,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:07:26,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:07:26,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:07:26,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:07:26,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:07:26,867 INFO L87 Difference]: Start difference. First operand 1683 states and 2752 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 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 03:07:27,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:07:27,349 INFO L93 Difference]: Finished difference Result 3795 states and 6212 transitions. [2023-11-29 03:07:27,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:07:27,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 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 03:07:27,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:07:27,370 INFO L225 Difference]: With dead ends: 3795 [2023-11-29 03:07:27,370 INFO L226 Difference]: Without dead ends: 2301 [2023-11-29 03:07:27,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 529 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 03:07:27,377 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 635 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:07:27,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 1307 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:07:27,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2301 states. [2023-11-29 03:07:27,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2301 to 1431. [2023-11-29 03:07:27,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1431 states, 1126 states have (on average 1.5612788632326822) internal successors, (1758), 1128 states have internal predecessors, (1758), 295 states have call successors, (295), 9 states have call predecessors, (295), 9 states have return successors, (295), 293 states have call predecessors, (295), 295 states have call successors, (295) [2023-11-29 03:07:27,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 2348 transitions. [2023-11-29 03:07:27,550 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 2348 transitions. Word has length 532 [2023-11-29 03:07:27,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:07:27,551 INFO L495 AbstractCegarLoop]: Abstraction has 1431 states and 2348 transitions. [2023-11-29 03:07:27,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 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 03:07:27,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 2348 transitions. [2023-11-29 03:07:27,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2023-11-29 03:07:27,558 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:07:27,559 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 03:07:27,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 03:07:27,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 03:07:27,760 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:07:27,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:07:27,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1258359153, now seen corresponding path program 1 times [2023-11-29 03:07:27,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:07:27,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224075650] [2023-11-29 03:07:27,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:27,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:07:27,828 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:07:27,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [199854625] [2023-11-29 03:07:27,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:27,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:07:27,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:07:27,829 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:07:27,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 03:07:28,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:28,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 1348 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 03:07:28,318 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:07:29,248 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 03:07:29,248 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:07:29,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:07:29,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224075650] [2023-11-29 03:07:29,249 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:07:29,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199854625] [2023-11-29 03:07:29,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199854625] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:07:29,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:07:29,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 03:07:29,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197502065] [2023-11-29 03:07:29,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:07:29,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:07:29,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:07:29,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:07:29,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:07:29,252 INFO L87 Difference]: Start difference. First operand 1431 states and 2348 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 6 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 03:07:31,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:07:31,692 INFO L93 Difference]: Finished difference Result 6237 states and 10182 transitions. [2023-11-29 03:07:31,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 03:07:31,693 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 6 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 03:07:31,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:07:31,733 INFO L225 Difference]: With dead ends: 6237 [2023-11-29 03:07:31,734 INFO L226 Difference]: Without dead ends: 4893 [2023-11-29 03:07:31,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 526 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:07:31,741 INFO L413 NwaCegarLoop]: 516 mSDtfsCounter, 3125 mSDsluCounter, 1603 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 702 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3125 SdHoareTripleChecker+Valid, 2119 SdHoareTripleChecker+Invalid, 1531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 702 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 03:07:31,742 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3125 Valid, 2119 Invalid, 1531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [702 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 03:07:31,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4893 states. [2023-11-29 03:07:32,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4893 to 2804. [2023-11-29 03:07:32,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2804 states, 2277 states have (on average 1.561703996486605) internal successors, (3556), 2281 states have internal predecessors, (3556), 511 states have call successors, (511), 15 states have call predecessors, (511), 15 states have return successors, (511), 507 states have call predecessors, (511), 511 states have call successors, (511) [2023-11-29 03:07:32,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2804 states to 2804 states and 4578 transitions. [2023-11-29 03:07:32,041 INFO L78 Accepts]: Start accepts. Automaton has 2804 states and 4578 transitions. Word has length 532 [2023-11-29 03:07:32,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:07:32,042 INFO L495 AbstractCegarLoop]: Abstraction has 2804 states and 4578 transitions. [2023-11-29 03:07:32,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 6 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 03:07:32,042 INFO L276 IsEmpty]: Start isEmpty. Operand 2804 states and 4578 transitions. [2023-11-29 03:07:32,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2023-11-29 03:07:32,050 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:07:32,051 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 03:07:32,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-29 03:07:32,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 03:07:32,252 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:07:32,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:07:32,253 INFO L85 PathProgramCache]: Analyzing trace with hash -985624145, now seen corresponding path program 1 times [2023-11-29 03:07:32,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:07:32,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854301544] [2023-11-29 03:07:32,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:32,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:07:32,336 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:07:32,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [91692820] [2023-11-29 03:07:32,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:32,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:07:32,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:07:32,338 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:07:32,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 03:07:32,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:32,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 1349 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 03:07:32,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:07:34,286 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 03:07:34,286 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:07:34,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:07:34,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854301544] [2023-11-29 03:07:34,286 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:07:34,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [91692820] [2023-11-29 03:07:34,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [91692820] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:07:34,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:07:34,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:07:34,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371925970] [2023-11-29 03:07:34,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:07:34,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:07:34,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:07:34,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:07:34,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:07:34,289 INFO L87 Difference]: Start difference. First operand 2804 states and 4578 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 03:07:34,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:07:34,471 INFO L93 Difference]: Finished difference Result 6785 states and 11067 transitions. [2023-11-29 03:07:34,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:07:34,471 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 03:07:34,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:07:34,517 INFO L225 Difference]: With dead ends: 6785 [2023-11-29 03:07:34,517 INFO L226 Difference]: Without dead ends: 4171 [2023-11-29 03:07:34,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 529 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 03:07:34,523 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 217 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:07:34,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 1328 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:07:34,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4171 states. [2023-11-29 03:07:34,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4171 to 4169. [2023-11-29 03:07:34,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4169 states, 3420 states have (on average 1.5567251461988305) internal successors, (5324), 3426 states have internal predecessors, (5324), 727 states have call successors, (727), 21 states have call predecessors, (727), 21 states have return successors, (727), 721 states have call predecessors, (727), 727 states have call successors, (727) [2023-11-29 03:07:34,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4169 states to 4169 states and 6778 transitions. [2023-11-29 03:07:34,740 INFO L78 Accepts]: Start accepts. Automaton has 4169 states and 6778 transitions. Word has length 532 [2023-11-29 03:07:34,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:07:34,741 INFO L495 AbstractCegarLoop]: Abstraction has 4169 states and 6778 transitions. [2023-11-29 03:07:34,741 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 03:07:34,741 INFO L276 IsEmpty]: Start isEmpty. Operand 4169 states and 6778 transitions. [2023-11-29 03:07:34,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2023-11-29 03:07:34,750 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:07:34,751 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 03:07:34,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 03:07:34,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-29 03:07:34,952 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:07:34,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:07:34,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1398300593, now seen corresponding path program 1 times [2023-11-29 03:07:34,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:07:34,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308561774] [2023-11-29 03:07:34,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:34,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:07:35,031 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:07:35,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [183086150] [2023-11-29 03:07:35,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:35,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:07:35,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:07:35,033 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:07:35,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 03:07:35,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:35,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 1350 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 03:07:35,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:07:36,604 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 7640 proven. 177 refuted. 0 times theorem prover too weak. 4507 trivial. 0 not checked. [2023-11-29 03:07:36,604 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:07:37,162 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 57 proven. 177 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2023-11-29 03:07:37,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:07:37,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308561774] [2023-11-29 03:07:37,163 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:07:37,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183086150] [2023-11-29 03:07:37,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183086150] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:07:37,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:07:37,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-29 03:07:37,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885870974] [2023-11-29 03:07:37,164 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:07:37,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 03:07:37,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:07:37,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 03:07:37,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:07:37,167 INFO L87 Difference]: Start difference. First operand 4169 states and 6778 transitions. Second operand has 12 states, 12 states have (on average 19.666666666666668) internal successors, (236), 12 states have internal predecessors, (236), 5 states have call successors, (138), 3 states have call predecessors, (138), 5 states have return successors, (139), 5 states have call predecessors, (139), 5 states have call successors, (139) [2023-11-29 03:07:38,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:07:38,617 INFO L93 Difference]: Finished difference Result 11141 states and 17974 transitions. [2023-11-29 03:07:38,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 03:07:38,618 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 19.666666666666668) internal successors, (236), 12 states have internal predecessors, (236), 5 states have call successors, (138), 3 states have call predecessors, (138), 5 states have return successors, (139), 5 states have call predecessors, (139), 5 states have call successors, (139) Word has length 532 [2023-11-29 03:07:38,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:07:38,669 INFO L225 Difference]: With dead ends: 11141 [2023-11-29 03:07:38,669 INFO L226 Difference]: Without dead ends: 7169 [2023-11-29 03:07:38,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1076 GetRequests, 1054 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=187, Invalid=365, Unknown=0, NotChecked=0, Total=552 [2023-11-29 03:07:38,680 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 1363 mSDsluCounter, 1186 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1382 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 1244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 03:07:38,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1382 Valid, 1527 Invalid, 1244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 03:07:38,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7169 states. [2023-11-29 03:07:39,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7169 to 4395. [2023-11-29 03:07:39,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4395 states, 3613 states have (on average 1.5355660116246885) internal successors, (5548), 3619 states have internal predecessors, (5548), 727 states have call successors, (727), 54 states have call predecessors, (727), 54 states have return successors, (727), 721 states have call predecessors, (727), 727 states have call successors, (727) [2023-11-29 03:07:39,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4395 states to 4395 states and 7002 transitions. [2023-11-29 03:07:39,158 INFO L78 Accepts]: Start accepts. Automaton has 4395 states and 7002 transitions. Word has length 532 [2023-11-29 03:07:39,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:07:39,159 INFO L495 AbstractCegarLoop]: Abstraction has 4395 states and 7002 transitions. [2023-11-29 03:07:39,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.666666666666668) internal successors, (236), 12 states have internal predecessors, (236), 5 states have call successors, (138), 3 states have call predecessors, (138), 5 states have return successors, (139), 5 states have call predecessors, (139), 5 states have call successors, (139) [2023-11-29 03:07:39,160 INFO L276 IsEmpty]: Start isEmpty. Operand 4395 states and 7002 transitions. [2023-11-29 03:07:39,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2023-11-29 03:07:39,182 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:07:39,183 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 03:07:39,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-29 03:07:39,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:07:39,383 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:07:39,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:07:39,384 INFO L85 PathProgramCache]: Analyzing trace with hash 500907315, now seen corresponding path program 1 times [2023-11-29 03:07:39,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:07:39,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161730293] [2023-11-29 03:07:39,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:39,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:07:39,458 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:07:39,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1520316850] [2023-11-29 03:07:39,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:39,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:07:39,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:07:39,460 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:07:39,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 03:07:39,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:39,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 1348 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 03:07:39,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:07:40,510 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 03:07:40,511 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:07:40,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:07:40,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161730293] [2023-11-29 03:07:40,511 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:07:40,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520316850] [2023-11-29 03:07:40,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520316850] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:07:40,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:07:40,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:07:40,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067530136] [2023-11-29 03:07:40,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:07:40,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:07:40,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:07:40,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:07:40,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:07:40,515 INFO L87 Difference]: Start difference. First operand 4395 states and 7002 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 03:07:41,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:07:41,083 INFO L93 Difference]: Finished difference Result 10356 states and 16544 transitions. [2023-11-29 03:07:41,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:07:41,085 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 03:07:41,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:07:41,112 INFO L225 Difference]: With dead ends: 10356 [2023-11-29 03:07:41,112 INFO L226 Difference]: Without dead ends: 6170 [2023-11-29 03:07:41,124 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 03:07:41,125 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 449 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 1339 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 03:07:41,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 1339 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 03:07:41,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6170 states. [2023-11-29 03:07:41,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6170 to 4426. [2023-11-29 03:07:41,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4426 states, 3644 states have (on average 1.5340285400658618) internal successors, (5590), 3650 states have internal predecessors, (5590), 727 states have call successors, (727), 54 states have call predecessors, (727), 54 states have return successors, (727), 721 states have call predecessors, (727), 727 states have call successors, (727) [2023-11-29 03:07:41,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4426 states to 4426 states and 7044 transitions. [2023-11-29 03:07:41,653 INFO L78 Accepts]: Start accepts. Automaton has 4426 states and 7044 transitions. Word has length 532 [2023-11-29 03:07:41,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:07:41,654 INFO L495 AbstractCegarLoop]: Abstraction has 4426 states and 7044 transitions. [2023-11-29 03:07:41,655 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 03:07:41,655 INFO L276 IsEmpty]: Start isEmpty. Operand 4426 states and 7044 transitions. [2023-11-29 03:07:41,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 533 [2023-11-29 03:07:41,664 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:07:41,664 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 03:07:41,673 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 03:07:41,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 03:07:41,865 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:07:41,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:07:41,866 INFO L85 PathProgramCache]: Analyzing trace with hash 1468257969, now seen corresponding path program 1 times [2023-11-29 03:07:41,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:07:41,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132042393] [2023-11-29 03:07:41,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:41,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:07:41,947 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:07:41,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1319947932] [2023-11-29 03:07:41,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:41,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:07:41,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:07:41,949 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:07:41,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 03:07:42,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:42,459 INFO L262 TraceCheckSpWp]: Trace formula consists of 1350 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 03:07:42,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:07:42,886 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 6843 proven. 120 refuted. 0 times theorem prover too weak. 5361 trivial. 0 not checked. [2023-11-29 03:07:42,886 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:07:43,377 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 342 proven. 123 refuted. 0 times theorem prover too weak. 11859 trivial. 0 not checked. [2023-11-29 03:07:43,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:07:43,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132042393] [2023-11-29 03:07:43,378 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:07:43,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319947932] [2023-11-29 03:07:43,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319947932] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:07:43,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:07:43,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 20 [2023-11-29 03:07:43,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795399316] [2023-11-29 03:07:43,379 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:07:43,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 03:07:43,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:07:43,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 03:07:43,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2023-11-29 03:07:43,381 INFO L87 Difference]: Start difference. First operand 4426 states and 7044 transitions. Second operand has 20 states, 20 states have (on average 11.5) internal successors, (230), 20 states have internal predecessors, (230), 5 states have call successors, (116), 3 states have call predecessors, (116), 7 states have return successors, (117), 5 states have call predecessors, (117), 5 states have call successors, (117) [2023-11-29 03:07:45,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:07:45,811 INFO L93 Difference]: Finished difference Result 12694 states and 20101 transitions. [2023-11-29 03:07:45,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 03:07:45,811 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 11.5) internal successors, (230), 20 states have internal predecessors, (230), 5 states have call successors, (116), 3 states have call predecessors, (116), 7 states have return successors, (117), 5 states have call predecessors, (117), 5 states have call successors, (117) Word has length 532 [2023-11-29 03:07:45,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:07:45,829 INFO L225 Difference]: With dead ends: 12694 [2023-11-29 03:07:45,830 INFO L226 Difference]: Without dead ends: 8508 [2023-11-29 03:07:45,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1079 GetRequests, 1046 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=337, Invalid=853, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 03:07:45,837 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 2564 mSDsluCounter, 2690 mSDsCounter, 0 mSdLazyCounter, 1971 mSolverCounterSat, 703 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2605 SdHoareTripleChecker+Valid, 3195 SdHoareTripleChecker+Invalid, 2674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 703 IncrementalHoareTripleChecker+Valid, 1971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:07:45,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2605 Valid, 3195 Invalid, 2674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [703 Valid, 1971 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-29 03:07:45,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8508 states. [2023-11-29 03:07:46,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8508 to 8426. [2023-11-29 03:07:46,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8426 states, 7107 states have (on average 1.529055860419305) internal successors, (10867), 7129 states have internal predecessors, (10867), 1191 states have call successors, (1191), 127 states have call predecessors, (1191), 127 states have return successors, (1191), 1169 states have call predecessors, (1191), 1191 states have call successors, (1191) [2023-11-29 03:07:46,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8426 states to 8426 states and 13249 transitions. [2023-11-29 03:07:46,434 INFO L78 Accepts]: Start accepts. Automaton has 8426 states and 13249 transitions. Word has length 532 [2023-11-29 03:07:46,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:07:46,435 INFO L495 AbstractCegarLoop]: Abstraction has 8426 states and 13249 transitions. [2023-11-29 03:07:46,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 11.5) internal successors, (230), 20 states have internal predecessors, (230), 5 states have call successors, (116), 3 states have call predecessors, (116), 7 states have return successors, (117), 5 states have call predecessors, (117), 5 states have call successors, (117) [2023-11-29 03:07:46,436 INFO L276 IsEmpty]: Start isEmpty. Operand 8426 states and 13249 transitions. [2023-11-29 03:07:46,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2023-11-29 03:07:46,441 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:07:46,441 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] [2023-11-29 03:07:46,450 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 03:07:46,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:07:46,642 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:07:46,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:07:46,643 INFO L85 PathProgramCache]: Analyzing trace with hash 715263767, now seen corresponding path program 1 times [2023-11-29 03:07:46,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:07:46,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694367205] [2023-11-29 03:07:46,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:46,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:07:46,724 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:07:46,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1896000525] [2023-11-29 03:07:46,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:46,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:07:46,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:07:46,726 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:07:46,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 03:07:47,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:47,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 1354 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 03:07:47,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:07:48,671 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 03:07:48,671 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:07:48,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:07:48,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694367205] [2023-11-29 03:07:48,671 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:07:48,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896000525] [2023-11-29 03:07:48,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896000525] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:07:48,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:07:48,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:07:48,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393375703] [2023-11-29 03:07:48,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:07:48,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:07:48,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:07:48,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:07:48,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:07:48,675 INFO L87 Difference]: Start difference. First operand 8426 states and 13249 transitions. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 4 states have internal predecessors, (142), 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 03:07:50,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:07:50,717 INFO L93 Difference]: Finished difference Result 40580 states and 64170 transitions. [2023-11-29 03:07:50,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:07:50,718 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 4 states have internal predecessors, (142), 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 534 [2023-11-29 03:07:50,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:07:50,779 INFO L225 Difference]: With dead ends: 40580 [2023-11-29 03:07:50,779 INFO L226 Difference]: Without dead ends: 32406 [2023-11-29 03:07:50,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 530 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 03:07:50,794 INFO L413 NwaCegarLoop]: 740 mSDtfsCounter, 1431 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 319 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 1978 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 319 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 03:07:50,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1431 Valid, 1978 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [319 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 03:07:50,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32406 states. [2023-11-29 03:07:52,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32406 to 28092. [2023-11-29 03:07:52,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28092 states, 24313 states have (on average 1.5440710730884712) internal successors, (37541), 24379 states have internal predecessors, (37541), 3415 states have call successors, (3415), 363 states have call predecessors, (3415), 363 states have return successors, (3415), 3349 states have call predecessors, (3415), 3415 states have call successors, (3415) [2023-11-29 03:07:53,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28092 states to 28092 states and 44371 transitions. [2023-11-29 03:07:53,050 INFO L78 Accepts]: Start accepts. Automaton has 28092 states and 44371 transitions. Word has length 534 [2023-11-29 03:07:53,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:07:53,051 INFO L495 AbstractCegarLoop]: Abstraction has 28092 states and 44371 transitions. [2023-11-29 03:07:53,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 4 states have internal predecessors, (142), 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 03:07:53,051 INFO L276 IsEmpty]: Start isEmpty. Operand 28092 states and 44371 transitions. [2023-11-29 03:07:53,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 535 [2023-11-29 03:07:53,069 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:07:53,069 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] [2023-11-29 03:07:53,080 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 03:07:53,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:07:53,270 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:07:53,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:07:53,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1159164441, now seen corresponding path program 1 times [2023-11-29 03:07:53,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:07:53,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268945465] [2023-11-29 03:07:53,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:53,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:07:53,348 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:07:53,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [4836510] [2023-11-29 03:07:53,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:53,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:07:53,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:07:53,350 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:07:53,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 03:07:53,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:53,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 1354 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:07:53,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:07:53,865 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 03:07:53,866 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:07:53,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:07:53,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268945465] [2023-11-29 03:07:53,866 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:07:53,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4836510] [2023-11-29 03:07:53,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4836510] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:07:53,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:07:53,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:07:53,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217403030] [2023-11-29 03:07:53,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:07:53,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:07:53,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:07:53,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:07:53,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 03:07:53,869 INFO L87 Difference]: Start difference. First operand 28092 states and 44371 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 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 03:07:55,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:07:55,362 INFO L93 Difference]: Finished difference Result 62579 states and 99174 transitions. [2023-11-29 03:07:55,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:07:55,363 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 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 534 [2023-11-29 03:07:55,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:07:55,417 INFO L225 Difference]: With dead ends: 62579 [2023-11-29 03:07:55,417 INFO L226 Difference]: Without dead ends: 34002 [2023-11-29 03:07:55,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 531 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 03:07:55,456 INFO L413 NwaCegarLoop]: 599 mSDtfsCounter, 455 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 1348 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 03:07:55,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 1348 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 03:07:55,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34002 states. [2023-11-29 03:07:57,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34002 to 33332. [2023-11-29 03:07:57,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33332 states, 29791 states have (on average 1.5647007485482192) internal successors, (46614), 29855 states have internal predecessors, (46614), 3199 states have call successors, (3199), 341 states have call predecessors, (3199), 341 states have return successors, (3199), 3135 states have call predecessors, (3199), 3199 states have call successors, (3199) [2023-11-29 03:07:57,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33332 states to 33332 states and 53012 transitions. [2023-11-29 03:07:57,537 INFO L78 Accepts]: Start accepts. Automaton has 33332 states and 53012 transitions. Word has length 534 [2023-11-29 03:07:57,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:07:57,538 INFO L495 AbstractCegarLoop]: Abstraction has 33332 states and 53012 transitions. [2023-11-29 03:07:57,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 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 03:07:57,539 INFO L276 IsEmpty]: Start isEmpty. Operand 33332 states and 53012 transitions. [2023-11-29 03:07:57,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2023-11-29 03:07:57,549 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:07:57,549 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 03:07:57,557 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 03:07:57,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:07:57,750 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:07:57,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:07:57,751 INFO L85 PathProgramCache]: Analyzing trace with hash -607079494, now seen corresponding path program 1 times [2023-11-29 03:07:57,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:07:57,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075643690] [2023-11-29 03:07:57,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:57,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:07:57,838 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:07:57,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1397776803] [2023-11-29 03:07:57,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:07:57,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:07:57,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:07:57,841 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:07:57,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 03:07:58,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:07:58,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 1355 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 03:07:58,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:07:59,994 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 03:07:59,994 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:07:59,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:07:59,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075643690] [2023-11-29 03:07:59,995 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:07:59,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397776803] [2023-11-29 03:07:59,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397776803] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:07:59,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:07:59,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:07:59,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154580789] [2023-11-29 03:07:59,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:07:59,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:07:59,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:07:59,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:07:59,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:07:59,999 INFO L87 Difference]: Start difference. First operand 33332 states and 53012 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 03:08:02,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:08:02,853 INFO L93 Difference]: Finished difference Result 96664 states and 153694 transitions. [2023-11-29 03:08:02,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:08:02,853 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 03:08:02,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:08:02,940 INFO L225 Difference]: With dead ends: 96664 [2023-11-29 03:08:02,940 INFO L226 Difference]: Without dead ends: 63584 [2023-11-29 03:08:02,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 531 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:08:02,972 INFO L413 NwaCegarLoop]: 572 mSDtfsCounter, 1012 mSDsluCounter, 1576 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1012 SdHoareTripleChecker+Valid, 2148 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 03:08:02,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1012 Valid, 2148 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 03:08:03,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63584 states. [2023-11-29 03:08:06,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63584 to 51817. [2023-11-29 03:08:06,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51817 states, 45816 states have (on average 1.5550899249170596) internal successors, (71248), 45924 states have internal predecessors, (71248), 5423 states have call successors, (5423), 577 states have call predecessors, (5423), 577 states have return successors, (5423), 5315 states have call predecessors, (5423), 5423 states have call successors, (5423) [2023-11-29 03:08:06,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51817 states to 51817 states and 82094 transitions. [2023-11-29 03:08:06,523 INFO L78 Accepts]: Start accepts. Automaton has 51817 states and 82094 transitions. Word has length 535 [2023-11-29 03:08:06,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:08:06,524 INFO L495 AbstractCegarLoop]: Abstraction has 51817 states and 82094 transitions. [2023-11-29 03:08:06,524 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 03:08:06,524 INFO L276 IsEmpty]: Start isEmpty. Operand 51817 states and 82094 transitions. [2023-11-29 03:08:06,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2023-11-29 03:08:06,538 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:08:06,539 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 03:08:06,547 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 03:08:06,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 03:08:06,740 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:08:06,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:08:06,740 INFO L85 PathProgramCache]: Analyzing trace with hash -163178820, now seen corresponding path program 1 times [2023-11-29 03:08:06,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:08:06,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321237850] [2023-11-29 03:08:06,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:08:06,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:08:06,842 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:08:06,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [764110101] [2023-11-29 03:08:06,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:08:06,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:08:06,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:08:06,844 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:08:06,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 03:08:07,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:08:07,426 INFO L262 TraceCheckSpWp]: Trace formula consists of 1355 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 03:08:07,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:08:08,123 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 03:08:08,123 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:08:08,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:08:08,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321237850] [2023-11-29 03:08:08,124 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:08:08,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764110101] [2023-11-29 03:08:08,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764110101] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:08:08,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:08:08,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 03:08:08,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305750187] [2023-11-29 03:08:08,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:08:08,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 03:08:08,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:08:08,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 03:08:08,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:08:08,127 INFO L87 Difference]: Start difference. First operand 51817 states and 82094 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 03:08:14,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:08:14,676 INFO L93 Difference]: Finished difference Result 198860 states and 315061 transitions. [2023-11-29 03:08:14,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 03:08:14,676 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 03:08:14,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:08:14,978 INFO L225 Difference]: With dead ends: 198860 [2023-11-29 03:08:14,978 INFO L226 Difference]: Without dead ends: 147295 [2023-11-29 03:08:15,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 531 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:08:15,050 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 445 mSDsluCounter, 993 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 03:08:15,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 1497 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 03:08:15,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147295 states. [2023-11-29 03:08:22,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147295 to 147081. [2023-11-29 03:08:22,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147081 states, 131248 states have (on average 1.5559322808728513) internal successors, (204213), 131600 states have internal predecessors, (204213), 14279 states have call successors, (14279), 1553 states have call predecessors, (14279), 1553 states have return successors, (14279), 13927 states have call predecessors, (14279), 14279 states have call successors, (14279) [2023-11-29 03:08:23,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147081 states to 147081 states and 232771 transitions. [2023-11-29 03:08:23,592 INFO L78 Accepts]: Start accepts. Automaton has 147081 states and 232771 transitions. Word has length 535 [2023-11-29 03:08:23,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:08:23,593 INFO L495 AbstractCegarLoop]: Abstraction has 147081 states and 232771 transitions. [2023-11-29 03:08:23,593 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 03:08:23,593 INFO L276 IsEmpty]: Start isEmpty. Operand 147081 states and 232771 transitions. [2023-11-29 03:08:23,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2023-11-29 03:08:23,628 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:08:23,629 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 03:08:23,637 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 03:08:23,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:08:23,830 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:08:23,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:08:23,830 INFO L85 PathProgramCache]: Analyzing trace with hash 234546628, now seen corresponding path program 1 times [2023-11-29 03:08:23,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:08:23,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637011687] [2023-11-29 03:08:23,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:08:23,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:08:24,085 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:08:24,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [362836914] [2023-11-29 03:08:24,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:08:24,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:08:24,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:08:24,086 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:08:24,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 03:08:24,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:08:24,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 1353 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 03:08:24,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:08:26,048 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 1824 proven. 216 refuted. 0 times theorem prover too weak. 10284 trivial. 0 not checked. [2023-11-29 03:08:26,048 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:08:26,605 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 18 proven. 216 refuted. 0 times theorem prover too weak. 12090 trivial. 0 not checked. [2023-11-29 03:08:26,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:08:26,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637011687] [2023-11-29 03:08:26,606 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:08:26,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362836914] [2023-11-29 03:08:26,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362836914] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:08:26,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:08:26,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-29 03:08:26,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291969980] [2023-11-29 03:08:26,607 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:08:26,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 03:08:26,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:08:26,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 03:08:26,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-11-29 03:08:26,611 INFO L87 Difference]: Start difference. First operand 147081 states and 232771 transitions. Second operand has 12 states, 11 states have (on average 23.545454545454547) internal successors, (259), 12 states have internal predecessors, (259), 5 states have call successors, (152), 3 states have call predecessors, (152), 4 states have return successors, (152), 3 states have call predecessors, (152), 5 states have call successors, (152) [2023-11-29 03:08:49,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:08:49,390 INFO L93 Difference]: Finished difference Result 587854 states and 922225 transitions. [2023-11-29 03:08:49,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-29 03:08:49,390 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 23.545454545454547) internal successors, (259), 12 states have internal predecessors, (259), 5 states have call successors, (152), 3 states have call predecessors, (152), 4 states have return successors, (152), 3 states have call predecessors, (152), 5 states have call successors, (152) Word has length 535 [2023-11-29 03:08:49,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:08:50,343 INFO L225 Difference]: With dead ends: 587854 [2023-11-29 03:08:50,344 INFO L226 Difference]: Without dead ends: 441085 [2023-11-29 03:08:50,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1090 GetRequests, 1062 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=273, Invalid=597, Unknown=0, NotChecked=0, Total=870 [2023-11-29 03:08:50,483 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 2240 mSDsluCounter, 1339 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 601 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2246 SdHoareTripleChecker+Valid, 1782 SdHoareTripleChecker+Invalid, 1383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 601 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 03:08:50,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2246 Valid, 1782 Invalid, 1383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [601 Valid, 782 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 03:08:50,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441085 states. [2023-11-29 03:09:05,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441085 to 174857. [2023-11-29 03:09:05,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174857 states, 158615 states have (on average 1.5609116413958326) internal successors, (247584), 158967 states have internal predecessors, (247584), 14279 states have call successors, (14279), 1962 states have call predecessors, (14279), 1962 states have return successors, (14279), 13927 states have call predecessors, (14279), 14279 states have call successors, (14279) [2023-11-29 03:09:06,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174857 states to 174857 states and 276142 transitions. [2023-11-29 03:09:06,026 INFO L78 Accepts]: Start accepts. Automaton has 174857 states and 276142 transitions. Word has length 535 [2023-11-29 03:09:06,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:09:06,027 INFO L495 AbstractCegarLoop]: Abstraction has 174857 states and 276142 transitions. [2023-11-29 03:09:06,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 23.545454545454547) internal successors, (259), 12 states have internal predecessors, (259), 5 states have call successors, (152), 3 states have call predecessors, (152), 4 states have return successors, (152), 3 states have call predecessors, (152), 5 states have call successors, (152) [2023-11-29 03:09:06,028 INFO L276 IsEmpty]: Start isEmpty. Operand 174857 states and 276142 transitions. [2023-11-29 03:09:06,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2023-11-29 03:09:06,057 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:09:06,058 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 03:09:06,066 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 03:09:06,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:09:06,258 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:09:06,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:09:06,259 INFO L85 PathProgramCache]: Analyzing trace with hash 936146502, now seen corresponding path program 1 times [2023-11-29 03:09:06,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:09:06,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083534136] [2023-11-29 03:09:06,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:09:06,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:09:06,323 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:09:06,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1877217205] [2023-11-29 03:09:06,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:09:06,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:09:06,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:09:06,324 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:09:06,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 03:09:07,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:09:07,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 1353 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 03:09:07,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:09:09,282 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 3756 proven. 378 refuted. 0 times theorem prover too weak. 8190 trivial. 0 not checked. [2023-11-29 03:09:09,282 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:09:13,373 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 84 proven. 381 refuted. 0 times theorem prover too weak. 11859 trivial. 0 not checked. [2023-11-29 03:09:13,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:09:13,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083534136] [2023-11-29 03:09:13,374 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:09:13,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877217205] [2023-11-29 03:09:13,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877217205] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:09:13,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:09:13,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2023-11-29 03:09:13,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277601785] [2023-11-29 03:09:13,375 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:09:13,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 03:09:13,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:09:13,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 03:09:13,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2023-11-29 03:09:13,378 INFO L87 Difference]: Start difference. First operand 174857 states and 276142 transitions. Second operand has 20 states, 19 states have (on average 14.31578947368421) internal successors, (272), 18 states have internal predecessors, (272), 6 states have call successors, (158), 4 states have call predecessors, (158), 7 states have return successors, (158), 6 states have call predecessors, (158), 6 states have call successors, (158) [2023-11-29 03:10:32,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:10:32,498 INFO L93 Difference]: Finished difference Result 748140 states and 1160857 transitions. [2023-11-29 03:10:32,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-11-29 03:10:32,499 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 14.31578947368421) internal successors, (272), 18 states have internal predecessors, (272), 6 states have call successors, (158), 4 states have call predecessors, (158), 7 states have return successors, (158), 6 states have call predecessors, (158), 6 states have call successors, (158) Word has length 535 [2023-11-29 03:10:32,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:10:33,741 INFO L225 Difference]: With dead ends: 748140 [2023-11-29 03:10:33,741 INFO L226 Difference]: Without dead ends: 573599 [2023-11-29 03:10:33,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1126 GetRequests, 1060 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1526 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=1030, Invalid=3526, Unknown=0, NotChecked=0, Total=4556 [2023-11-29 03:10:33,937 INFO L413 NwaCegarLoop]: 791 mSDtfsCounter, 4454 mSDsluCounter, 5673 mSDsCounter, 0 mSdLazyCounter, 4495 mSolverCounterSat, 1504 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4470 SdHoareTripleChecker+Valid, 6464 SdHoareTripleChecker+Invalid, 5999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1504 IncrementalHoareTripleChecker+Valid, 4495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2023-11-29 03:10:33,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4470 Valid, 6464 Invalid, 5999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1504 Valid, 4495 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2023-11-29 03:10:34,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573599 states. [2023-11-29 03:11:17,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573599 to 322299. [2023-11-29 03:11:17,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322299 states, 284223 states have (on average 1.524626789527941) internal successors, (433334), 285023 states have internal predecessors, (433334), 32799 states have call successors, (32799), 5276 states have call predecessors, (32799), 5276 states have return successors, (32799), 31999 states have call predecessors, (32799), 32799 states have call successors, (32799) [2023-11-29 03:11:19,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322299 states to 322299 states and 498932 transitions. [2023-11-29 03:11:19,237 INFO L78 Accepts]: Start accepts. Automaton has 322299 states and 498932 transitions. Word has length 535 [2023-11-29 03:11:19,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:11:19,238 INFO L495 AbstractCegarLoop]: Abstraction has 322299 states and 498932 transitions. [2023-11-29 03:11:19,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 14.31578947368421) internal successors, (272), 18 states have internal predecessors, (272), 6 states have call successors, (158), 4 states have call predecessors, (158), 7 states have return successors, (158), 6 states have call predecessors, (158), 6 states have call successors, (158) [2023-11-29 03:11:19,239 INFO L276 IsEmpty]: Start isEmpty. Operand 322299 states and 498932 transitions. [2023-11-29 03:11:19,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2023-11-29 03:11:19,259 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:11:19,259 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, 1] [2023-11-29 03:11:19,270 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 03:11:19,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 03:11:19,460 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:11:19,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:11:19,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1264410657, now seen corresponding path program 1 times [2023-11-29 03:11:19,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:11:19,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374886598] [2023-11-29 03:11:19,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:11:19,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:11:19,527 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:11:19,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1230065874] [2023-11-29 03:11:19,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:11:19,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:11:19,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:11:19,529 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:11:19,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 03:11:20,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:11:20,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 1355 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 03:11:20,296 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:11:21,578 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 6572 proven. 348 refuted. 0 times theorem prover too weak. 5404 trivial. 0 not checked. [2023-11-29 03:11:21,578 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:11:22,498 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 357 proven. 108 refuted. 0 times theorem prover too weak. 11859 trivial. 0 not checked. [2023-11-29 03:11:22,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:11:22,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374886598] [2023-11-29 03:11:22,499 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:11:22,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230065874] [2023-11-29 03:11:22,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230065874] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:11:22,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:11:22,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 21 [2023-11-29 03:11:22,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221092572] [2023-11-29 03:11:22,500 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:11:22,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 03:11:22,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:11:22,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 03:11:22,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2023-11-29 03:11:22,502 INFO L87 Difference]: Start difference. First operand 322299 states and 498932 transitions. Second operand has 21 states, 21 states have (on average 12.476190476190476) internal successors, (262), 20 states have internal predecessors, (262), 6 states have call successors, (111), 4 states have call predecessors, (111), 8 states have return successors, (113), 6 states have call predecessors, (113), 6 states have call successors, (113) [2023-11-29 03:13:13,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:13:13,384 INFO L93 Difference]: Finished difference Result 1050207 states and 1613972 transitions. [2023-11-29 03:13:13,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2023-11-29 03:13:13,384 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 12.476190476190476) internal successors, (262), 20 states have internal predecessors, (262), 6 states have call successors, (111), 4 states have call predecessors, (111), 8 states have return successors, (113), 6 states have call predecessors, (113), 6 states have call successors, (113) Word has length 537 [2023-11-29 03:13:13,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:13:14,777 INFO L225 Difference]: With dead ends: 1050207 [2023-11-29 03:13:14,777 INFO L226 Difference]: Without dead ends: 738991 [2023-11-29 03:13:15,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1122 GetRequests, 1061 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1045 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1075, Invalid=2831, Unknown=0, NotChecked=0, Total=3906 [2023-11-29 03:13:15,186 INFO L413 NwaCegarLoop]: 584 mSDtfsCounter, 3293 mSDsluCounter, 2826 mSDsCounter, 0 mSdLazyCounter, 2682 mSolverCounterSat, 1173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3385 SdHoareTripleChecker+Valid, 3410 SdHoareTripleChecker+Invalid, 3855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1173 IncrementalHoareTripleChecker+Valid, 2682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-29 03:13:15,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3385 Valid, 3410 Invalid, 3855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1173 Valid, 2682 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-29 03:13:15,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738991 states. [2023-11-29 03:14:22,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738991 to 585185. [2023-11-29 03:14:22,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585185 states, 528978 states have (on average 1.542050898146993) internal successors, (815711), 530002 states have internal predecessors, (815711), 47919 states have call successors, (47919), 8287 states have call predecessors, (47919), 8287 states have return successors, (47919), 46895 states have call predecessors, (47919), 47919 states have call successors, (47919) [2023-11-29 03:14:24,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585185 states to 585185 states and 911549 transitions. [2023-11-29 03:14:24,858 INFO L78 Accepts]: Start accepts. Automaton has 585185 states and 911549 transitions. Word has length 537 [2023-11-29 03:14:24,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 03:14:24,858 INFO L495 AbstractCegarLoop]: Abstraction has 585185 states and 911549 transitions. [2023-11-29 03:14:24,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 12.476190476190476) internal successors, (262), 20 states have internal predecessors, (262), 6 states have call successors, (111), 4 states have call predecessors, (111), 8 states have return successors, (113), 6 states have call predecessors, (113), 6 states have call successors, (113) [2023-11-29 03:14:24,858 INFO L276 IsEmpty]: Start isEmpty. Operand 585185 states and 911549 transitions. [2023-11-29 03:14:24,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 539 [2023-11-29 03:14:24,886 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 03:14:24,886 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, 1, 1] [2023-11-29 03:14:24,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 03:14:25,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 03:14:25,087 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 03:14:25,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:14:25,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1987039905, now seen corresponding path program 1 times [2023-11-29 03:14:25,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:14:25,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419514696] [2023-11-29 03:14:25,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:14:25,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:14:25,147 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 03:14:25,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [574508944] [2023-11-29 03:14:25,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:14:25,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:14:25,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:14:25,148 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:14:25,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c099f8ce-4335-47ae-9625-dd227ccf8b91/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 03:14:25,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:14:25,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 1356 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-29 03:14:25,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:14:28,636 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 5378 proven. 504 refuted. 0 times theorem prover too weak. 6442 trivial. 0 not checked. [2023-11-29 03:14:28,636 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:14:30,492 INFO L134 CoverageAnalysis]: Checked inductivity of 12324 backedges. 180 proven. 513 refuted. 0 times theorem prover too weak. 11631 trivial. 0 not checked. [2023-11-29 03:14:30,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:14:30,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419514696] [2023-11-29 03:14:30,493 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 03:14:30,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574508944] [2023-11-29 03:14:30,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574508944] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:14:30,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 03:14:30,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17] total 30 [2023-11-29 03:14:30,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143259483] [2023-11-29 03:14:30,494 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 03:14:30,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-29 03:14:30,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:14:30,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-29 03:14:30,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=668, Unknown=0, NotChecked=0, Total=870 [2023-11-29 03:14:30,497 INFO L87 Difference]: Start difference. First operand 585185 states and 911549 transitions. Second operand has 30 states, 29 states have (on average 9.413793103448276) internal successors, (273), 28 states have internal predecessors, (273), 8 states have call successors, (158), 5 states have call predecessors, (158), 10 states have return successors, (158), 8 states have call predecessors, (158), 8 states have call successors, (158) [2023-11-29 03:18:45,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 03:18:45,998 INFO L93 Difference]: Finished difference Result 5481131 states and 8766443 transitions. [2023-11-29 03:18:45,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-11-29 03:18:45,999 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 9.413793103448276) internal successors, (273), 28 states have internal predecessors, (273), 8 states have call successors, (158), 5 states have call predecessors, (158), 10 states have return successors, (158), 8 states have call predecessors, (158), 8 states have call successors, (158) Word has length 538 [2023-11-29 03:18:46,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 03:18:54,165 INFO L225 Difference]: With dead ends: 5481131 [2023-11-29 03:18:54,165 INFO L226 Difference]: Without dead ends: 4905479 [2023-11-29 03:18:55,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1137 GetRequests, 1054 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2203 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1743, Invalid=5397, Unknown=0, NotChecked=0, Total=7140 [2023-11-29 03:18:55,071 INFO L413 NwaCegarLoop]: 587 mSDtfsCounter, 4486 mSDsluCounter, 9114 mSDsCounter, 0 mSdLazyCounter, 5812 mSolverCounterSat, 921 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4507 SdHoareTripleChecker+Valid, 9701 SdHoareTripleChecker+Invalid, 6733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 921 IncrementalHoareTripleChecker+Valid, 5812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-11-29 03:18:55,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4507 Valid, 9701 Invalid, 6733 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [921 Valid, 5812 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-11-29 03:18:57,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4905479 states.