./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-96.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/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_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-96.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/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_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/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 bbe82d9db46cc4877e8712955f17e418608577d83df9685a386a7b3e39c5f9b9 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:38:49,955 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:38:50,017 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 04:38:50,022 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:38:50,023 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:38:50,043 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:38:50,044 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:38:50,045 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:38:50,045 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:38:50,046 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:38:50,046 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:38:50,047 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:38:50,048 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:38:50,048 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:38:50,049 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:38:50,049 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:38:50,050 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 04:38:50,050 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:38:50,050 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:38:50,051 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:38:50,051 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:38:50,052 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 04:38:50,052 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:38:50,052 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 04:38:50,053 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:38:50,053 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 04:38:50,053 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:38:50,054 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:38:50,054 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:38:50,055 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:38:50,055 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:38:50,055 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:38:50,056 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:38:50,056 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:38:50,056 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 04:38:50,056 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:38:50,056 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:38:50,056 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:38:50,057 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:38:50,057 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 04:38:50,057 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:38:50,057 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:38:50,057 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_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bbe82d9db46cc4877e8712955f17e418608577d83df9685a386a7b3e39c5f9b9 [2023-11-29 04:38:50,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:38:50,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:38:50,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:38:50,340 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:38:50,340 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:38:50,341 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-96.i [2023-11-29 04:38:53,091 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:38:53,332 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:38:53,333 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-96.i [2023-11-29 04:38:53,349 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/data/14a1dfd6a/36b487dfa5664dd8b6353c2c4b3a27bf/FLAGae579e036 [2023-11-29 04:38:53,363 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/data/14a1dfd6a/36b487dfa5664dd8b6353c2c4b3a27bf [2023-11-29 04:38:53,366 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:38:53,367 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:38:53,369 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:38:53,369 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:38:53,374 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:38:53,375 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:38:53" (1/1) ... [2023-11-29 04:38:53,376 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1114c716 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:53, skipping insertion in model container [2023-11-29 04:38:53,376 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:38:53" (1/1) ... [2023-11-29 04:38:53,445 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:38:53,601 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_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-96.i[916,929] [2023-11-29 04:38:53,822 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:38:53,838 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:38:53,850 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_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-96.i[916,929] [2023-11-29 04:38:53,950 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:38:53,972 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:38:53,973 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:53 WrapperNode [2023-11-29 04:38:53,973 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:38:53,974 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:38:53,974 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:38:53,974 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:38:53,982 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:53" (1/1) ... [2023-11-29 04:38:54,027 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:53" (1/1) ... [2023-11-29 04:38:54,164 INFO L138 Inliner]: procedures = 26, calls = 78, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 730 [2023-11-29 04:38:54,164 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:38:54,165 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:38:54,165 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:38:54,165 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:38:54,177 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:53" (1/1) ... [2023-11-29 04:38:54,177 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:53" (1/1) ... [2023-11-29 04:38:54,199 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:53" (1/1) ... [2023-11-29 04:38:54,253 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 04:38:54,253 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:53" (1/1) ... [2023-11-29 04:38:54,253 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:53" (1/1) ... [2023-11-29 04:38:54,279 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:53" (1/1) ... [2023-11-29 04:38:54,287 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:53" (1/1) ... [2023-11-29 04:38:54,298 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:53" (1/1) ... [2023-11-29 04:38:54,306 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:53" (1/1) ... [2023-11-29 04:38:54,318 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:38:54,319 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:38:54,320 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:38:54,320 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:38:54,321 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:53" (1/1) ... [2023-11-29 04:38:54,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:38:54,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:38:54,350 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:38:54,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:38:54,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:38:54,383 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 04:38:54,383 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 04:38:54,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 04:38:54,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:38:54,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:38:54,520 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:38:54,522 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:38:55,621 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:38:55,679 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:38:55,679 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 04:38:55,680 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:38:55 BoogieIcfgContainer [2023-11-29 04:38:55,680 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:38:55,682 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:38:55,682 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:38:55,685 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:38:55,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:38:53" (1/3) ... [2023-11-29 04:38:55,686 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22b05322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:38:55, skipping insertion in model container [2023-11-29 04:38:55,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:38:53" (2/3) ... [2023-11-29 04:38:55,687 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22b05322 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:38:55, skipping insertion in model container [2023-11-29 04:38:55,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:38:55" (3/3) ... [2023-11-29 04:38:55,688 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-96.i [2023-11-29 04:38:55,707 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:38:55,707 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 04:38:55,765 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:38:55,772 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;@9c2190, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:38:55,772 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 04:38:55,778 INFO L276 IsEmpty]: Start isEmpty. Operand has 274 states, 206 states have (on average 1.6019417475728155) internal successors, (330), 207 states have internal predecessors, (330), 65 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2023-11-29 04:38:55,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2023-11-29 04:38:55,808 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:38:55,809 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:38:55,810 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:38:55,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:38:55,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1379838149, now seen corresponding path program 1 times [2023-11-29 04:38:55,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:38:55,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525059406] [2023-11-29 04:38:55,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:55,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:38:56,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:56,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:38:56,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525059406] [2023-11-29 04:38:56,176 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 04:38:56,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507974116] [2023-11-29 04:38:56,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:56,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:56,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:38:56,184 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:38:56,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 04:38:56,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:56,573 INFO L262 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 04:38:56,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:38:56,657 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 8192 trivial. 0 not checked. [2023-11-29 04:38:56,658 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:38:56,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507974116] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:38:56,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:38:56,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:38:56,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993464504] [2023-11-29 04:38:56,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:38:56,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 04:38:56,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:38:56,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 04:38:56,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 04:38:56,695 INFO L87 Difference]: Start difference. First operand has 274 states, 206 states have (on average 1.6019417475728155) internal successors, (330), 207 states have internal predecessors, (330), 65 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) Second operand has 2 states, 2 states have (on average 65.5) internal successors, (131), 2 states have internal predecessors, (131), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 2 states have call successors, (65) [2023-11-29 04:38:56,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:38:56,768 INFO L93 Difference]: Finished difference Result 542 states and 977 transitions. [2023-11-29 04:38:56,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 04:38:56,771 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 65.5) internal successors, (131), 2 states have internal predecessors, (131), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 2 states have call successors, (65) Word has length 451 [2023-11-29 04:38:56,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:38:56,781 INFO L225 Difference]: With dead ends: 542 [2023-11-29 04:38:56,781 INFO L226 Difference]: Without dead ends: 269 [2023-11-29 04:38:56,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 450 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 04:38:56,790 INFO L413 NwaCegarLoop]: 442 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, 442 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 04:38:56,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 442 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 04:38:56,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2023-11-29 04:38:56,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2023-11-29 04:38:56,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 202 states have (on average 1.5594059405940595) internal successors, (315), 202 states have internal predecessors, (315), 65 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2023-11-29 04:38:56,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 445 transitions. [2023-11-29 04:38:56,856 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 445 transitions. Word has length 451 [2023-11-29 04:38:56,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:38:56,857 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 445 transitions. [2023-11-29 04:38:56,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 65.5) internal successors, (131), 2 states have internal predecessors, (131), 2 states have call successors, (65), 2 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 2 states have call successors, (65) [2023-11-29 04:38:56,858 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 445 transitions. [2023-11-29 04:38:56,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2023-11-29 04:38:56,883 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:38:56,883 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:38:56,893 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-29 04:38:57,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 04:38:57,084 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:38:57,085 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:38:57,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1245093521, now seen corresponding path program 1 times [2023-11-29 04:38:57,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:38:57,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070021164] [2023-11-29 04:38:57,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:57,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:38:57,206 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:38:57,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [462577928] [2023-11-29 04:38:57,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:57,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:57,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:38:57,209 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:38:57,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 04:38:57,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:57,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:38:57,620 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:38:57,748 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-11-29 04:38:57,748 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:38:57,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:38:57,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070021164] [2023-11-29 04:38:57,749 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:38:57,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462577928] [2023-11-29 04:38:57,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462577928] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:38:57,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:38:57,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:38:57,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515113880] [2023-11-29 04:38:57,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:38:57,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:38:57,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:38:57,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:38:57,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:38:57,754 INFO L87 Difference]: Start difference. First operand 269 states and 445 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-11-29 04:38:57,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:38:57,866 INFO L93 Difference]: Finished difference Result 717 states and 1185 transitions. [2023-11-29 04:38:57,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:38:57,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 451 [2023-11-29 04:38:57,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:38:57,874 INFO L225 Difference]: With dead ends: 717 [2023-11-29 04:38:57,874 INFO L226 Difference]: Without dead ends: 449 [2023-11-29 04:38:57,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 449 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 04:38:57,877 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 269 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:38:57,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 1071 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:38:57,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2023-11-29 04:38:57,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 446. [2023-11-29 04:38:57,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 358 states have (on average 1.5865921787709498) internal successors, (568), 359 states have internal predecessors, (568), 85 states have call successors, (85), 2 states have call predecessors, (85), 2 states have return successors, (85), 84 states have call predecessors, (85), 85 states have call successors, (85) [2023-11-29 04:38:57,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 738 transitions. [2023-11-29 04:38:57,965 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 738 transitions. Word has length 451 [2023-11-29 04:38:57,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:38:57,967 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 738 transitions. [2023-11-29 04:38:57,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-11-29 04:38:57,968 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 738 transitions. [2023-11-29 04:38:57,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2023-11-29 04:38:57,975 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:38:57,976 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:38:57,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 04:38:58,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:58,176 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:38:58,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:38:58,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1315769325, now seen corresponding path program 1 times [2023-11-29 04:38:58,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:38:58,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246364678] [2023-11-29 04:38:58,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:58,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:38:58,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:58,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:38:58,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246364678] [2023-11-29 04:38:58,356 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 04:38:58,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883886993] [2023-11-29 04:38:58,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:58,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:58,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:38:58,358 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:38:58,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 04:38:58,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:58,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 1143 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:38:58,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:38:58,841 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-11-29 04:38:58,842 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:38:58,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883886993] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:38:58,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:38:58,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:38:58,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395737593] [2023-11-29 04:38:58,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:38:58,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:38:58,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:38:58,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:38:58,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:38:58,845 INFO L87 Difference]: Start difference. First operand 446 states and 738 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-11-29 04:38:58,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:38:58,960 INFO L93 Difference]: Finished difference Result 1188 states and 1954 transitions. [2023-11-29 04:38:58,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:38:58,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 451 [2023-11-29 04:38:58,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:38:58,969 INFO L225 Difference]: With dead ends: 1188 [2023-11-29 04:38:58,969 INFO L226 Difference]: Without dead ends: 743 [2023-11-29 04:38:58,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 449 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 04:38:58,972 INFO L413 NwaCegarLoop]: 646 mSDtfsCounter, 256 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:38:58,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 1068 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:38:58,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2023-11-29 04:38:59,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 740. [2023-11-29 04:38:59,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 586 states have (on average 1.5614334470989761) internal successors, (915), 589 states have internal predecessors, (915), 149 states have call successors, (149), 4 states have call predecessors, (149), 4 states have return successors, (149), 146 states have call predecessors, (149), 149 states have call successors, (149) [2023-11-29 04:38:59,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1213 transitions. [2023-11-29 04:38:59,027 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1213 transitions. Word has length 451 [2023-11-29 04:38:59,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:38:59,029 INFO L495 AbstractCegarLoop]: Abstraction has 740 states and 1213 transitions. [2023-11-29 04:38:59,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-11-29 04:38:59,030 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1213 transitions. [2023-11-29 04:38:59,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2023-11-29 04:38:59,035 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:38:59,035 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:38:59,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 04:38:59,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:59,236 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:38:59,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:38:59,237 INFO L85 PathProgramCache]: Analyzing trace with hash 929810129, now seen corresponding path program 1 times [2023-11-29 04:38:59,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:38:59,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578402892] [2023-11-29 04:38:59,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:59,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:38:59,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:59,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:38:59,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578402892] [2023-11-29 04:38:59,401 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 04:38:59,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010615514] [2023-11-29 04:38:59,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:38:59,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:38:59,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:38:59,403 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:38:59,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 04:38:59,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:38:59,830 INFO L262 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:38:59,841 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:38:59,928 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-11-29 04:38:59,928 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:38:59,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010615514] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:38:59,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:38:59,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:38:59,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751865250] [2023-11-29 04:38:59,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:38:59,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:38:59,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:38:59,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:38:59,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:38:59,932 INFO L87 Difference]: Start difference. First operand 740 states and 1213 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-11-29 04:39:00,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:39:00,105 INFO L93 Difference]: Finished difference Result 1646 states and 2713 transitions. [2023-11-29 04:39:00,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:39:00,106 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 451 [2023-11-29 04:39:00,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:39:00,114 INFO L225 Difference]: With dead ends: 1646 [2023-11-29 04:39:00,114 INFO L226 Difference]: Without dead ends: 907 [2023-11-29 04:39:00,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 448 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 04:39:00,117 INFO L413 NwaCegarLoop]: 577 mSDtfsCounter, 335 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 1576 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:39:00,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 1576 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:39:00,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2023-11-29 04:39:00,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 701. [2023-11-29 04:39:00,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 612 states have (on average 1.6470588235294117) internal successors, (1008), 613 states have internal predecessors, (1008), 85 states have call successors, (85), 3 states have call predecessors, (85), 3 states have return successors, (85), 84 states have call predecessors, (85), 85 states have call successors, (85) [2023-11-29 04:39:00,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 1178 transitions. [2023-11-29 04:39:00,166 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 1178 transitions. Word has length 451 [2023-11-29 04:39:00,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:39:00,168 INFO L495 AbstractCegarLoop]: Abstraction has 701 states and 1178 transitions. [2023-11-29 04:39:00,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-11-29 04:39:00,168 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 1178 transitions. [2023-11-29 04:39:00,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2023-11-29 04:39:00,173 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:39:00,173 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:39:00,181 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 04:39:00,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:00,376 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:39:00,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:39:00,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1265928305, now seen corresponding path program 1 times [2023-11-29 04:39:00,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:39:00,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549641199] [2023-11-29 04:39:00,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:00,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:39:00,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:39:00,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:39:00,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549641199] [2023-11-29 04:39:00,495 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 04:39:00,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201958022] [2023-11-29 04:39:00,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:00,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:00,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:39:00,500 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:39:00,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 04:39:00,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:39:00,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 1138 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:39:00,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:39:01,030 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-11-29 04:39:01,030 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:39:01,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201958022] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:39:01,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:39:01,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:39:01,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088050359] [2023-11-29 04:39:01,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:39:01,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:39:01,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:39:01,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:39:01,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:39:01,034 INFO L87 Difference]: Start difference. First operand 701 states and 1178 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-11-29 04:39:01,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:39:01,320 INFO L93 Difference]: Finished difference Result 1873 states and 3140 transitions. [2023-11-29 04:39:01,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:39:01,321 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 451 [2023-11-29 04:39:01,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:39:01,330 INFO L225 Difference]: With dead ends: 1873 [2023-11-29 04:39:01,330 INFO L226 Difference]: Without dead ends: 1173 [2023-11-29 04:39:01,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 448 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 04:39:01,333 INFO L413 NwaCegarLoop]: 692 mSDtfsCounter, 608 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 1534 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:39:01,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [608 Valid, 1534 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 04:39:01,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2023-11-29 04:39:01,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 801. [2023-11-29 04:39:01,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 712 states have (on average 1.6601123595505618) internal successors, (1182), 713 states have internal predecessors, (1182), 85 states have call successors, (85), 3 states have call predecessors, (85), 3 states have return successors, (85), 84 states have call predecessors, (85), 85 states have call successors, (85) [2023-11-29 04:39:01,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1352 transitions. [2023-11-29 04:39:01,382 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1352 transitions. Word has length 451 [2023-11-29 04:39:01,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:39:01,382 INFO L495 AbstractCegarLoop]: Abstraction has 801 states and 1352 transitions. [2023-11-29 04:39:01,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-11-29 04:39:01,383 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1352 transitions. [2023-11-29 04:39:01,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2023-11-29 04:39:01,388 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:39:01,388 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:39:01,397 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 04:39:01,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:01,589 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:39:01,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:39:01,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1971200913, now seen corresponding path program 1 times [2023-11-29 04:39:01,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:39:01,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594498805] [2023-11-29 04:39:01,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:01,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:39:01,666 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:39:01,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [793437839] [2023-11-29 04:39:01,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:01,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:01,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:39:01,668 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:39:01,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 04:39:02,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:39:02,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 1137 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:39:02,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:39:02,707 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 1032 proven. 180 refuted. 0 times theorem prover too weak. 7108 trivial. 0 not checked. [2023-11-29 04:39:02,707 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:39:03,142 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 12 proven. 180 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2023-11-29 04:39:03,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:39:03,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594498805] [2023-11-29 04:39:03,143 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:39:03,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793437839] [2023-11-29 04:39:03,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793437839] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:39:03,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:39:03,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-29 04:39:03,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604847076] [2023-11-29 04:39:03,144 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:39:03,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 04:39:03,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:39:03,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 04:39:03,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:39:03,148 INFO L87 Difference]: Start difference. First operand 801 states and 1352 transitions. Second operand has 8 states, 8 states have (on average 23.125) internal successors, (185), 8 states have internal predecessors, (185), 3 states have call successors, (125), 2 states have call predecessors, (125), 4 states have return successors, (126), 3 states have call predecessors, (126), 3 states have call successors, (126) [2023-11-29 04:39:03,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:39:03,683 INFO L93 Difference]: Finished difference Result 1615 states and 2715 transitions. [2023-11-29 04:39:03,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 04:39:03,685 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 23.125) internal successors, (185), 8 states have internal predecessors, (185), 3 states have call successors, (125), 2 states have call predecessors, (125), 4 states have return successors, (126), 3 states have call predecessors, (126), 3 states have call successors, (126) Word has length 451 [2023-11-29 04:39:03,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:39:03,691 INFO L225 Difference]: With dead ends: 1615 [2023-11-29 04:39:03,691 INFO L226 Difference]: Without dead ends: 815 [2023-11-29 04:39:03,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 904 GetRequests, 894 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:39:03,694 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 271 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 04:39:03,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 870 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 04:39:03,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2023-11-29 04:39:03,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 809. [2023-11-29 04:39:03,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 718 states have (on average 1.6434540389972145) internal successors, (1180), 719 states have internal predecessors, (1180), 85 states have call successors, (85), 5 states have call predecessors, (85), 5 states have return successors, (85), 84 states have call predecessors, (85), 85 states have call successors, (85) [2023-11-29 04:39:03,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 1350 transitions. [2023-11-29 04:39:03,737 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 1350 transitions. Word has length 451 [2023-11-29 04:39:03,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:39:03,737 INFO L495 AbstractCegarLoop]: Abstraction has 809 states and 1350 transitions. [2023-11-29 04:39:03,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.125) internal successors, (185), 8 states have internal predecessors, (185), 3 states have call successors, (125), 2 states have call predecessors, (125), 4 states have return successors, (126), 3 states have call predecessors, (126), 3 states have call successors, (126) [2023-11-29 04:39:03,738 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 1350 transitions. [2023-11-29 04:39:03,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2023-11-29 04:39:03,743 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:39:03,743 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:39:03,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 04:39:03,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:03,944 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:39:03,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:39:03,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1884383105, now seen corresponding path program 1 times [2023-11-29 04:39:03,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:39:03,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674624851] [2023-11-29 04:39:03,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:03,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:39:04,014 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:39:04,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [396060922] [2023-11-29 04:39:04,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:04,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:04,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:39:04,016 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:39:04,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 04:39:04,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:39:04,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 1138 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:39:04,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:39:04,678 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 3672 proven. 60 refuted. 0 times theorem prover too weak. 4588 trivial. 0 not checked. [2023-11-29 04:39:04,678 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:39:04,983 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 132 proven. 60 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2023-11-29 04:39:04,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:39:04,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674624851] [2023-11-29 04:39:04,983 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:39:04,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396060922] [2023-11-29 04:39:04,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396060922] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:39:04,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:39:04,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 04:39:04,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581791288] [2023-11-29 04:39:04,985 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:39:04,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:39:04,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:39:04,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:39:04,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:39:04,987 INFO L87 Difference]: Start difference. First operand 809 states and 1350 transitions. Second operand has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 2 states have call successors, (85), 2 states have call predecessors, (85), 4 states have return successors, (86), 2 states have call predecessors, (86), 2 states have call successors, (86) [2023-11-29 04:39:05,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:39:05,706 INFO L93 Difference]: Finished difference Result 1481 states and 2439 transitions. [2023-11-29 04:39:05,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:39:05,707 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 2 states have call successors, (85), 2 states have call predecessors, (85), 4 states have return successors, (86), 2 states have call predecessors, (86), 2 states have call successors, (86) Word has length 452 [2023-11-29 04:39:05,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:39:05,713 INFO L225 Difference]: With dead ends: 1481 [2023-11-29 04:39:05,714 INFO L226 Difference]: Without dead ends: 673 [2023-11-29 04:39:05,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 906 GetRequests, 896 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:39:05,716 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 552 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 1106 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:39:05,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 1106 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 04:39:05,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2023-11-29 04:39:05,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 519. [2023-11-29 04:39:05,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 427 states have (on average 1.5644028103044496) internal successors, (668), 428 states have internal predecessors, (668), 85 states have call successors, (85), 6 states have call predecessors, (85), 6 states have return successors, (85), 84 states have call predecessors, (85), 85 states have call successors, (85) [2023-11-29 04:39:05,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 838 transitions. [2023-11-29 04:39:05,762 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 838 transitions. Word has length 452 [2023-11-29 04:39:05,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:39:05,763 INFO L495 AbstractCegarLoop]: Abstraction has 519 states and 838 transitions. [2023-11-29 04:39:05,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 2 states have call successors, (85), 2 states have call predecessors, (85), 4 states have return successors, (86), 2 states have call predecessors, (86), 2 states have call successors, (86) [2023-11-29 04:39:05,763 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 838 transitions. [2023-11-29 04:39:05,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2023-11-29 04:39:05,767 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:39:05,768 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:39:05,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-29 04:39:05,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 04:39:05,969 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:39:05,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:39:05,969 INFO L85 PathProgramCache]: Analyzing trace with hash -333038433, now seen corresponding path program 1 times [2023-11-29 04:39:05,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:39:05,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038928785] [2023-11-29 04:39:05,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:05,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:39:06,040 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:39:06,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [527101621] [2023-11-29 04:39:06,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:06,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:06,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:39:06,042 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:39:06,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 04:39:06,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:39:06,390 INFO L262 TraceCheckSpWp]: Trace formula consists of 1143 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 04:39:06,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:39:06,815 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-11-29 04:39:06,815 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:39:06,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:39:06,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038928785] [2023-11-29 04:39:06,816 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:39:06,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527101621] [2023-11-29 04:39:06,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527101621] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:39:06,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:39:06,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:39:06,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179366544] [2023-11-29 04:39:06,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:39:06,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:39:06,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:39:06,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:39:06,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:39:06,819 INFO L87 Difference]: Start difference. First operand 519 states and 838 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-11-29 04:39:07,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:39:07,644 INFO L93 Difference]: Finished difference Result 3076 states and 5005 transitions. [2023-11-29 04:39:07,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:39:07,649 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 453 [2023-11-29 04:39:07,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:39:07,667 INFO L225 Difference]: With dead ends: 3076 [2023-11-29 04:39:07,667 INFO L226 Difference]: Without dead ends: 2558 [2023-11-29 04:39:07,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-29 04:39:07,671 INFO L413 NwaCegarLoop]: 758 mSDtfsCounter, 1993 mSDsluCounter, 2156 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1993 SdHoareTripleChecker+Valid, 2914 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:39:07,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1993 Valid, 2914 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 04:39:07,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2558 states. [2023-11-29 04:39:07,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2558 to 1160. [2023-11-29 04:39:07,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1160 states, 908 states have (on average 1.5176211453744493) internal successors, (1378), 910 states have internal predecessors, (1378), 235 states have call successors, (235), 16 states have call predecessors, (235), 16 states have return successors, (235), 233 states have call predecessors, (235), 235 states have call successors, (235) [2023-11-29 04:39:07,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1848 transitions. [2023-11-29 04:39:07,839 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1848 transitions. Word has length 453 [2023-11-29 04:39:07,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:39:07,840 INFO L495 AbstractCegarLoop]: Abstraction has 1160 states and 1848 transitions. [2023-11-29 04:39:07,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-11-29 04:39:07,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1848 transitions. [2023-11-29 04:39:07,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2023-11-29 04:39:07,845 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:39:07,846 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:39:07,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 04:39:08,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-29 04:39:08,047 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:39:08,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:39:08,048 INFO L85 PathProgramCache]: Analyzing trace with hash 2108445023, now seen corresponding path program 1 times [2023-11-29 04:39:08,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:39:08,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108480639] [2023-11-29 04:39:08,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:08,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:39:08,125 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:39:08,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [675225270] [2023-11-29 04:39:08,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:08,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:08,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:39:08,127 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:39:08,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 04:39:08,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:39:08,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 1141 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:39:08,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:39:08,894 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 2892 proven. 150 refuted. 0 times theorem prover too weak. 5278 trivial. 0 not checked. [2023-11-29 04:39:08,894 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:39:09,167 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 42 proven. 150 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2023-11-29 04:39:09,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:39:09,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108480639] [2023-11-29 04:39:09,168 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:39:09,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675225270] [2023-11-29 04:39:09,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675225270] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:39:09,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:39:09,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-29 04:39:09,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800161068] [2023-11-29 04:39:09,169 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:39:09,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 04:39:09,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:39:09,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 04:39:09,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:39:09,172 INFO L87 Difference]: Start difference. First operand 1160 states and 1848 transitions. Second operand has 8 states, 8 states have (on average 23.75) internal successors, (190), 8 states have internal predecessors, (190), 3 states have call successors, (115), 2 states have call predecessors, (115), 4 states have return successors, (116), 3 states have call predecessors, (116), 3 states have call successors, (116) [2023-11-29 04:39:09,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:39:09,576 INFO L93 Difference]: Finished difference Result 2231 states and 3540 transitions. [2023-11-29 04:39:09,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 04:39:09,577 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 23.75) internal successors, (190), 8 states have internal predecessors, (190), 3 states have call successors, (115), 2 states have call predecessors, (115), 4 states have return successors, (116), 3 states have call predecessors, (116), 3 states have call successors, (116) Word has length 454 [2023-11-29 04:39:09,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:39:09,583 INFO L225 Difference]: With dead ends: 2231 [2023-11-29 04:39:09,583 INFO L226 Difference]: Without dead ends: 1196 [2023-11-29 04:39:09,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 910 GetRequests, 900 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:39:09,587 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 531 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:39:09,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [545 Valid, 945 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 04:39:09,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2023-11-29 04:39:09,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 1180. [2023-11-29 04:39:09,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 923 states have (on average 1.5027085590465872) internal successors, (1387), 925 states have internal predecessors, (1387), 235 states have call successors, (235), 21 states have call predecessors, (235), 21 states have return successors, (235), 233 states have call predecessors, (235), 235 states have call successors, (235) [2023-11-29 04:39:09,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1857 transitions. [2023-11-29 04:39:09,705 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1857 transitions. Word has length 454 [2023-11-29 04:39:09,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:39:09,706 INFO L495 AbstractCegarLoop]: Abstraction has 1180 states and 1857 transitions. [2023-11-29 04:39:09,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.75) internal successors, (190), 8 states have internal predecessors, (190), 3 states have call successors, (115), 2 states have call predecessors, (115), 4 states have return successors, (116), 3 states have call predecessors, (116), 3 states have call successors, (116) [2023-11-29 04:39:09,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1857 transitions. [2023-11-29 04:39:09,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2023-11-29 04:39:09,711 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:39:09,712 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:39:09,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 04:39:09,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-29 04:39:09,913 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:39:09,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:39:09,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1615818849, now seen corresponding path program 1 times [2023-11-29 04:39:09,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:39:09,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395056823] [2023-11-29 04:39:09,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:09,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:39:09,983 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:39:09,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [808591989] [2023-11-29 04:39:09,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:09,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:09,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:39:09,985 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:39:09,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 04:39:10,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:39:10,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 1140 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:39:10,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:39:10,798 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 1872 proven. 168 refuted. 0 times theorem prover too weak. 6280 trivial. 0 not checked. [2023-11-29 04:39:10,798 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:39:11,125 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 24 proven. 168 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2023-11-29 04:39:11,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:39:11,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395056823] [2023-11-29 04:39:11,125 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:39:11,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808591989] [2023-11-29 04:39:11,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808591989] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:39:11,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:39:11,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-29 04:39:11,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606079733] [2023-11-29 04:39:11,126 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:39:11,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 04:39:11,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:39:11,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 04:39:11,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:39:11,129 INFO L87 Difference]: Start difference. First operand 1180 states and 1857 transitions. Second operand has 8 states, 8 states have (on average 29.125) internal successors, (233), 8 states have internal predecessors, (233), 3 states have call successors, (121), 2 states have call predecessors, (121), 4 states have return successors, (122), 3 states have call predecessors, (122), 3 states have call successors, (122) [2023-11-29 04:39:11,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:39:11,546 INFO L93 Difference]: Finished difference Result 2267 states and 3555 transitions. [2023-11-29 04:39:11,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 04:39:11,547 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 29.125) internal successors, (233), 8 states have internal predecessors, (233), 3 states have call successors, (121), 2 states have call predecessors, (121), 4 states have return successors, (122), 3 states have call predecessors, (122), 3 states have call successors, (122) Word has length 454 [2023-11-29 04:39:11,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:39:11,557 INFO L225 Difference]: With dead ends: 2267 [2023-11-29 04:39:11,557 INFO L226 Difference]: Without dead ends: 1216 [2023-11-29 04:39:11,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 910 GetRequests, 900 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:39:11,560 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 649 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:39:11,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 945 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 04:39:11,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2023-11-29 04:39:11,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1200. [2023-11-29 04:39:11,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1200 states, 938 states have (on average 1.4904051172707888) internal successors, (1398), 940 states have internal predecessors, (1398), 235 states have call successors, (235), 26 states have call predecessors, (235), 26 states have return successors, (235), 233 states have call predecessors, (235), 235 states have call successors, (235) [2023-11-29 04:39:11,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1200 states to 1200 states and 1868 transitions. [2023-11-29 04:39:11,683 INFO L78 Accepts]: Start accepts. Automaton has 1200 states and 1868 transitions. Word has length 454 [2023-11-29 04:39:11,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:39:11,684 INFO L495 AbstractCegarLoop]: Abstraction has 1200 states and 1868 transitions. [2023-11-29 04:39:11,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 29.125) internal successors, (233), 8 states have internal predecessors, (233), 3 states have call successors, (121), 2 states have call predecessors, (121), 4 states have return successors, (122), 3 states have call predecessors, (122), 3 states have call successors, (122) [2023-11-29 04:39:11,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1200 states and 1868 transitions. [2023-11-29 04:39:11,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2023-11-29 04:39:11,689 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:39:11,689 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:39:11,698 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 04:39:11,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:11,890 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:39:11,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:39:11,891 INFO L85 PathProgramCache]: Analyzing trace with hash -931521563, now seen corresponding path program 1 times [2023-11-29 04:39:11,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:39:11,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691753891] [2023-11-29 04:39:11,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:11,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:39:11,955 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:39:11,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1186000021] [2023-11-29 04:39:11,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:11,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:11,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:39:11,957 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:39:11,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 04:39:12,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:39:12,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 1149 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 04:39:12,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:39:13,092 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 3844 proven. 66 refuted. 0 times theorem prover too weak. 4410 trivial. 0 not checked. [2023-11-29 04:39:13,093 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:39:13,556 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 126 proven. 66 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2023-11-29 04:39:13,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:39:13,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691753891] [2023-11-29 04:39:13,557 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:39:13,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186000021] [2023-11-29 04:39:13,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186000021] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:39:13,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:39:13,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13 [2023-11-29 04:39:13,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856550345] [2023-11-29 04:39:13,557 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:39:13,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 04:39:13,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:39:13,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 04:39:13,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:39:13,561 INFO L87 Difference]: Start difference. First operand 1200 states and 1868 transitions. Second operand has 13 states, 13 states have (on average 14.923076923076923) internal successors, (194), 13 states have internal predecessors, (194), 4 states have call successors, (130), 3 states have call predecessors, (130), 5 states have return successors, (130), 4 states have call predecessors, (130), 4 states have call successors, (130) [2023-11-29 04:39:15,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:39:15,942 INFO L93 Difference]: Finished difference Result 7813 states and 12300 transitions. [2023-11-29 04:39:15,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-29 04:39:15,943 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 14.923076923076923) internal successors, (194), 13 states have internal predecessors, (194), 4 states have call successors, (130), 3 states have call predecessors, (130), 5 states have return successors, (130), 4 states have call predecessors, (130), 4 states have call successors, (130) Word has length 455 [2023-11-29 04:39:15,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:39:15,979 INFO L225 Difference]: With dead ends: 7813 [2023-11-29 04:39:15,980 INFO L226 Difference]: Without dead ends: 6746 [2023-11-29 04:39:15,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 931 GetRequests, 901 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=226, Invalid=704, Unknown=0, NotChecked=0, Total=930 [2023-11-29 04:39:15,985 INFO L413 NwaCegarLoop]: 690 mSDtfsCounter, 4479 mSDsluCounter, 3492 mSDsCounter, 0 mSdLazyCounter, 1476 mSolverCounterSat, 1028 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4523 SdHoareTripleChecker+Valid, 4182 SdHoareTripleChecker+Invalid, 2504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1028 IncrementalHoareTripleChecker+Valid, 1476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 04:39:15,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4523 Valid, 4182 Invalid, 2504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1028 Valid, 1476 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 04:39:15,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6746 states. [2023-11-29 04:39:16,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6746 to 2669. [2023-11-29 04:39:16,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2669 states, 2120 states have (on average 1.4806603773584905) internal successors, (3139), 2130 states have internal predecessors, (3139), 485 states have call successors, (485), 63 states have call predecessors, (485), 63 states have return successors, (485), 475 states have call predecessors, (485), 485 states have call successors, (485) [2023-11-29 04:39:16,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2669 states to 2669 states and 4109 transitions. [2023-11-29 04:39:16,377 INFO L78 Accepts]: Start accepts. Automaton has 2669 states and 4109 transitions. Word has length 455 [2023-11-29 04:39:16,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:39:16,378 INFO L495 AbstractCegarLoop]: Abstraction has 2669 states and 4109 transitions. [2023-11-29 04:39:16,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.923076923076923) internal successors, (194), 13 states have internal predecessors, (194), 4 states have call successors, (130), 3 states have call predecessors, (130), 5 states have return successors, (130), 4 states have call predecessors, (130), 4 states have call successors, (130) [2023-11-29 04:39:16,379 INFO L276 IsEmpty]: Start isEmpty. Operand 2669 states and 4109 transitions. [2023-11-29 04:39:16,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2023-11-29 04:39:16,384 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:39:16,384 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:39:16,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-29 04:39:16,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:16,585 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:39:16,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:39:16,585 INFO L85 PathProgramCache]: Analyzing trace with hash -592270745, now seen corresponding path program 1 times [2023-11-29 04:39:16,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:39:16,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646294115] [2023-11-29 04:39:16,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:16,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:39:16,650 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:39:16,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1836681583] [2023-11-29 04:39:16,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:16,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:16,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:39:16,652 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:39:16,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 04:39:17,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:39:17,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 1145 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:39:17,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:39:17,089 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-11-29 04:39:17,089 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:39:17,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:39:17,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646294115] [2023-11-29 04:39:17,089 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:39:17,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836681583] [2023-11-29 04:39:17,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836681583] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:39:17,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:39:17,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:39:17,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242100111] [2023-11-29 04:39:17,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:39:17,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:39:17,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:39:17,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:39:17,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:39:17,091 INFO L87 Difference]: Start difference. First operand 2669 states and 4109 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-11-29 04:39:17,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:39:17,281 INFO L93 Difference]: Finished difference Result 5215 states and 8041 transitions. [2023-11-29 04:39:17,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:39:17,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 455 [2023-11-29 04:39:17,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:39:17,294 INFO L225 Difference]: With dead ends: 5215 [2023-11-29 04:39:17,294 INFO L226 Difference]: Without dead ends: 2683 [2023-11-29 04:39:17,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 453 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 04:39:17,300 INFO L413 NwaCegarLoop]: 622 mSDtfsCounter, 393 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 1034 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:39:17,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 1034 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 04:39:17,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2683 states. [2023-11-29 04:39:17,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2683 to 2681. [2023-11-29 04:39:17,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2681 states, 2132 states have (on average 1.4685741088180113) internal successors, (3131), 2142 states have internal predecessors, (3131), 485 states have call successors, (485), 63 states have call predecessors, (485), 63 states have return successors, (485), 475 states have call predecessors, (485), 485 states have call successors, (485) [2023-11-29 04:39:17,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2681 states to 2681 states and 4101 transitions. [2023-11-29 04:39:17,519 INFO L78 Accepts]: Start accepts. Automaton has 2681 states and 4101 transitions. Word has length 455 [2023-11-29 04:39:17,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:39:17,519 INFO L495 AbstractCegarLoop]: Abstraction has 2681 states and 4101 transitions. [2023-11-29 04:39:17,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-11-29 04:39:17,520 INFO L276 IsEmpty]: Start isEmpty. Operand 2681 states and 4101 transitions. [2023-11-29 04:39:17,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2023-11-29 04:39:17,525 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:39:17,526 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:39:17,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-29 04:39:17,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 04:39:17,729 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:39:17,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:39:17,730 INFO L85 PathProgramCache]: Analyzing trace with hash -829746996, now seen corresponding path program 1 times [2023-11-29 04:39:17,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:39:17,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142683536] [2023-11-29 04:39:17,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:17,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:39:17,793 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:39:17,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [673535447] [2023-11-29 04:39:17,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:17,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:17,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:39:17,795 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:39:17,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 04:39:18,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:39:18,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 04:39:18,254 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:39:18,580 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 3294 proven. 141 refuted. 0 times theorem prover too weak. 4885 trivial. 0 not checked. [2023-11-29 04:39:18,580 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:39:18,839 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 51 proven. 141 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2023-11-29 04:39:18,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:39:18,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142683536] [2023-11-29 04:39:18,839 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:39:18,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673535447] [2023-11-29 04:39:18,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673535447] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:39:18,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:39:18,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-11-29 04:39:18,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495478041] [2023-11-29 04:39:18,840 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:39:18,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 04:39:18,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:39:18,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 04:39:18,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:39:18,843 INFO L87 Difference]: Start difference. First operand 2681 states and 4101 transitions. Second operand has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 2 states have call successors, (112), 2 states have call predecessors, (112), 4 states have return successors, (113), 2 states have call predecessors, (113), 2 states have call successors, (113) [2023-11-29 04:39:19,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:39:19,420 INFO L93 Difference]: Finished difference Result 4014 states and 6112 transitions. [2023-11-29 04:39:19,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:39:19,420 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 2 states have call successors, (112), 2 states have call predecessors, (112), 4 states have return successors, (113), 2 states have call predecessors, (113), 2 states have call successors, (113) Word has length 456 [2023-11-29 04:39:19,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:39:19,430 INFO L225 Difference]: With dead ends: 4014 [2023-11-29 04:39:19,430 INFO L226 Difference]: Without dead ends: 1470 [2023-11-29 04:39:19,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 918 GetRequests, 903 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2023-11-29 04:39:19,436 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 558 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 04:39:19,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 892 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 04:39:19,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2023-11-29 04:39:19,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 1426. [2023-11-29 04:39:19,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 1108 states have (on average 1.4503610108303249) internal successors, (1607), 1113 states have internal predecessors, (1607), 275 states have call successors, (275), 42 states have call predecessors, (275), 42 states have return successors, (275), 270 states have call predecessors, (275), 275 states have call successors, (275) [2023-11-29 04:39:19,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 2157 transitions. [2023-11-29 04:39:19,538 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 2157 transitions. Word has length 456 [2023-11-29 04:39:19,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:39:19,539 INFO L495 AbstractCegarLoop]: Abstraction has 1426 states and 2157 transitions. [2023-11-29 04:39:19,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.875) internal successors, (143), 8 states have internal predecessors, (143), 2 states have call successors, (112), 2 states have call predecessors, (112), 4 states have return successors, (113), 2 states have call predecessors, (113), 2 states have call successors, (113) [2023-11-29 04:39:19,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 2157 transitions. [2023-11-29 04:39:19,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2023-11-29 04:39:19,544 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:39:19,544 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:39:19,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-29 04:39:19,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:19,745 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:39:19,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:39:19,745 INFO L85 PathProgramCache]: Analyzing trace with hash 735337177, now seen corresponding path program 1 times [2023-11-29 04:39:19,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:39:19,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075649180] [2023-11-29 04:39:19,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:19,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:39:19,800 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:39:19,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1606379892] [2023-11-29 04:39:19,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:19,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:19,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:39:19,801 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:39:19,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 04:39:20,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:39:20,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 1147 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 04:39:20,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:39:20,677 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-11-29 04:39:20,677 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:39:20,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:39:20,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075649180] [2023-11-29 04:39:20,677 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:39:20,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606379892] [2023-11-29 04:39:20,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606379892] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:39:20,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:39:20,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:39:20,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251842131] [2023-11-29 04:39:20,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:39:20,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:39:20,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:39:20,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:39:20,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:39:20,709 INFO L87 Difference]: Start difference. First operand 1426 states and 2157 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-11-29 04:39:20,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:39:20,983 INFO L93 Difference]: Finished difference Result 3216 states and 4921 transitions. [2023-11-29 04:39:20,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:39:20,984 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 456 [2023-11-29 04:39:20,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:39:20,994 INFO L225 Difference]: With dead ends: 3216 [2023-11-29 04:39:20,994 INFO L226 Difference]: Without dead ends: 1929 [2023-11-29 04:39:20,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 453 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 04:39:20,998 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 445 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 1304 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:39:20,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 1304 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 04:39:21,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1929 states. [2023-11-29 04:39:21,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1929 to 1426. [2023-11-29 04:39:21,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 1108 states have (on average 1.4494584837545126) internal successors, (1606), 1113 states have internal predecessors, (1606), 275 states have call successors, (275), 42 states have call predecessors, (275), 42 states have return successors, (275), 270 states have call predecessors, (275), 275 states have call successors, (275) [2023-11-29 04:39:21,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 2156 transitions. [2023-11-29 04:39:21,100 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 2156 transitions. Word has length 456 [2023-11-29 04:39:21,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:39:21,101 INFO L495 AbstractCegarLoop]: Abstraction has 1426 states and 2156 transitions. [2023-11-29 04:39:21,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-11-29 04:39:21,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 2156 transitions. [2023-11-29 04:39:21,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2023-11-29 04:39:21,105 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:39:21,106 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:39:21,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 04:39:21,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 04:39:21,306 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:39:21,307 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:39:21,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1682566889, now seen corresponding path program 1 times [2023-11-29 04:39:21,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:39:21,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103463897] [2023-11-29 04:39:21,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:21,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:39:21,358 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:39:21,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [688466359] [2023-11-29 04:39:21,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:21,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:21,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:39:21,360 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:39:21,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 04:39:21,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:39:21,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 1148 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 04:39:21,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:39:22,636 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-11-29 04:39:22,636 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:39:22,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:39:22,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103463897] [2023-11-29 04:39:22,636 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:39:22,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688466359] [2023-11-29 04:39:22,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688466359] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:39:22,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:39:22,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:39:22,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896505823] [2023-11-29 04:39:22,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:39:22,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:39:22,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:39:22,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:39:22,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:39:22,639 INFO L87 Difference]: Start difference. First operand 1426 states and 2156 transitions. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-11-29 04:39:22,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:39:22,957 INFO L93 Difference]: Finished difference Result 3214 states and 4918 transitions. [2023-11-29 04:39:22,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:39:22,958 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 456 [2023-11-29 04:39:22,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:39:22,967 INFO L225 Difference]: With dead ends: 3214 [2023-11-29 04:39:22,967 INFO L226 Difference]: Without dead ends: 1929 [2023-11-29 04:39:22,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 452 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:39:22,972 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 443 mSDsluCounter, 1265 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 1727 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:39:22,972 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 1727 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 04:39:22,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1929 states. [2023-11-29 04:39:23,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1929 to 1432. [2023-11-29 04:39:23,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1114 states have (on average 1.4497307001795332) internal successors, (1615), 1119 states have internal predecessors, (1615), 275 states have call successors, (275), 42 states have call predecessors, (275), 42 states have return successors, (275), 270 states have call predecessors, (275), 275 states have call successors, (275) [2023-11-29 04:39:23,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 2165 transitions. [2023-11-29 04:39:23,136 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 2165 transitions. Word has length 456 [2023-11-29 04:39:23,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:39:23,137 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 2165 transitions. [2023-11-29 04:39:23,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-11-29 04:39:23,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 2165 transitions. [2023-11-29 04:39:23,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2023-11-29 04:39:23,141 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:39:23,141 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:39:23,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 04:39:23,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 04:39:23,342 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:39:23,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:39:23,342 INFO L85 PathProgramCache]: Analyzing trace with hash 193915929, now seen corresponding path program 1 times [2023-11-29 04:39:23,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:39:23,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538964953] [2023-11-29 04:39:23,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:23,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:39:23,408 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:39:23,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [327359050] [2023-11-29 04:39:23,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:23,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:23,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:39:23,409 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:39:23,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 04:39:23,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:39:23,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 1147 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 04:39:23,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:39:24,675 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-11-29 04:39:24,675 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:39:24,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:39:24,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538964953] [2023-11-29 04:39:24,676 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:39:24,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327359050] [2023-11-29 04:39:24,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327359050] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:39:24,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:39:24,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:39:24,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927389371] [2023-11-29 04:39:24,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:39:24,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:39:24,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:39:24,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:39:24,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:39:24,678 INFO L87 Difference]: Start difference. First operand 1432 states and 2165 transitions. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-11-29 04:39:25,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:39:25,058 INFO L93 Difference]: Finished difference Result 3171 states and 4845 transitions. [2023-11-29 04:39:25,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:39:25,059 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 456 [2023-11-29 04:39:25,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:39:25,066 INFO L225 Difference]: With dead ends: 3171 [2023-11-29 04:39:25,066 INFO L226 Difference]: Without dead ends: 1886 [2023-11-29 04:39:25,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 452 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:39:25,069 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 286 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 1683 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:39:25,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 1683 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 04:39:25,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1886 states. [2023-11-29 04:39:25,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1886 to 1480. [2023-11-29 04:39:25,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1480 states, 1162 states have (on average 1.4561101549053357) internal successors, (1692), 1167 states have internal predecessors, (1692), 275 states have call successors, (275), 42 states have call predecessors, (275), 42 states have return successors, (275), 270 states have call predecessors, (275), 275 states have call successors, (275) [2023-11-29 04:39:25,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1480 states to 1480 states and 2242 transitions. [2023-11-29 04:39:25,237 INFO L78 Accepts]: Start accepts. Automaton has 1480 states and 2242 transitions. Word has length 456 [2023-11-29 04:39:25,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:39:25,238 INFO L495 AbstractCegarLoop]: Abstraction has 1480 states and 2242 transitions. [2023-11-29 04:39:25,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 4 states have internal predecessors, (134), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-11-29 04:39:25,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1480 states and 2242 transitions. [2023-11-29 04:39:25,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2023-11-29 04:39:25,242 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:39:25,243 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:39:25,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 04:39:25,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 04:39:25,443 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:39:25,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:39:25,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1717126629, now seen corresponding path program 1 times [2023-11-29 04:39:25,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:39:25,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429620629] [2023-11-29 04:39:25,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:25,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:39:25,504 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:39:25,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1369631551] [2023-11-29 04:39:25,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:25,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:25,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:39:25,506 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:39:25,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 04:39:25,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:39:25,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 1148 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 04:39:25,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:39:26,368 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-11-29 04:39:26,368 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:39:26,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:39:26,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429620629] [2023-11-29 04:39:26,369 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:39:26,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369631551] [2023-11-29 04:39:26,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369631551] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:39:26,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:39:26,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 04:39:26,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835772241] [2023-11-29 04:39:26,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:39:26,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:39:26,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:39:26,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:39:26,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:39:26,371 INFO L87 Difference]: Start difference. First operand 1480 states and 2242 transitions. Second operand has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 8 states have internal predecessors, (134), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-11-29 04:39:27,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:39:27,206 INFO L93 Difference]: Finished difference Result 3814 states and 5786 transitions. [2023-11-29 04:39:27,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 04:39:27,207 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 8 states have internal predecessors, (134), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 456 [2023-11-29 04:39:27,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:39:27,214 INFO L225 Difference]: With dead ends: 3814 [2023-11-29 04:39:27,214 INFO L226 Difference]: Without dead ends: 2510 [2023-11-29 04:39:27,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2023-11-29 04:39:27,218 INFO L413 NwaCegarLoop]: 521 mSDtfsCounter, 2401 mSDsluCounter, 2407 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2401 SdHoareTripleChecker+Valid, 2928 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:39:27,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2401 Valid, 2928 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 04:39:27,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2510 states. [2023-11-29 04:39:27,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2510 to 1994. [2023-11-29 04:39:27,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1994 states, 1615 states have (on average 1.4743034055727555) internal successors, (2381), 1623 states have internal predecessors, (2381), 323 states have call successors, (323), 55 states have call predecessors, (323), 55 states have return successors, (323), 315 states have call predecessors, (323), 323 states have call successors, (323) [2023-11-29 04:39:27,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1994 states to 1994 states and 3027 transitions. [2023-11-29 04:39:27,348 INFO L78 Accepts]: Start accepts. Automaton has 1994 states and 3027 transitions. Word has length 456 [2023-11-29 04:39:27,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:39:27,349 INFO L495 AbstractCegarLoop]: Abstraction has 1994 states and 3027 transitions. [2023-11-29 04:39:27,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 8 states have internal predecessors, (134), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-11-29 04:39:27,349 INFO L276 IsEmpty]: Start isEmpty. Operand 1994 states and 3027 transitions. [2023-11-29 04:39:27,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2023-11-29 04:39:27,352 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:39:27,352 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:39:27,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 04:39:27,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 04:39:27,553 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:39:27,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:39:27,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1361686941, now seen corresponding path program 1 times [2023-11-29 04:39:27,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:39:27,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944623417] [2023-11-29 04:39:27,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:27,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:39:27,615 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:39:27,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [990981674] [2023-11-29 04:39:27,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:27,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:27,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:39:27,616 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:39:27,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 04:39:28,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:39:28,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 1147 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:39:28,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:39:28,062 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-11-29 04:39:28,063 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:39:28,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:39:28,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944623417] [2023-11-29 04:39:28,063 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:39:28,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990981674] [2023-11-29 04:39:28,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990981674] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:39:28,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:39:28,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:39:28,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619859308] [2023-11-29 04:39:28,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:39:28,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:39:28,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:39:28,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:39:28,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:39:28,065 INFO L87 Difference]: Start difference. First operand 1994 states and 3027 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-11-29 04:39:28,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:39:28,923 INFO L93 Difference]: Finished difference Result 7514 states and 11345 transitions. [2023-11-29 04:39:28,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:39:28,923 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 456 [2023-11-29 04:39:28,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:39:28,936 INFO L225 Difference]: With dead ends: 7514 [2023-11-29 04:39:28,936 INFO L226 Difference]: Without dead ends: 5762 [2023-11-29 04:39:28,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 454 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 04:39:28,940 INFO L413 NwaCegarLoop]: 731 mSDtfsCounter, 978 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 1337 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 04:39:28,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [978 Valid, 1337 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 04:39:28,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5762 states. [2023-11-29 04:39:29,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5762 to 4607. [2023-11-29 04:39:29,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4607 states, 3724 states have (on average 1.4632116004296456) internal successors, (5449), 3747 states have internal predecessors, (5449), 750 states have call successors, (750), 132 states have call predecessors, (750), 132 states have return successors, (750), 727 states have call predecessors, (750), 750 states have call successors, (750) [2023-11-29 04:39:29,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4607 states to 4607 states and 6949 transitions. [2023-11-29 04:39:29,319 INFO L78 Accepts]: Start accepts. Automaton has 4607 states and 6949 transitions. Word has length 456 [2023-11-29 04:39:29,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:39:29,320 INFO L495 AbstractCegarLoop]: Abstraction has 4607 states and 6949 transitions. [2023-11-29 04:39:29,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-11-29 04:39:29,320 INFO L276 IsEmpty]: Start isEmpty. Operand 4607 states and 6949 transitions. [2023-11-29 04:39:29,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2023-11-29 04:39:29,323 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:39:29,324 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:39:29,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-29 04:39:29,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 04:39:29,524 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:39:29,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:39:29,525 INFO L85 PathProgramCache]: Analyzing trace with hash -517444005, now seen corresponding path program 1 times [2023-11-29 04:39:29,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:39:29,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933277529] [2023-11-29 04:39:29,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:29,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:39:29,574 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:39:29,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [179574123] [2023-11-29 04:39:29,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:29,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:29,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:39:29,576 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:39:29,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 04:39:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:39:30,040 INFO L262 TraceCheckSpWp]: Trace formula consists of 1148 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:39:30,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:39:30,120 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 1362 proven. 15 refuted. 0 times theorem prover too weak. 6943 trivial. 0 not checked. [2023-11-29 04:39:30,120 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:39:30,297 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 177 proven. 15 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2023-11-29 04:39:30,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:39:30,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933277529] [2023-11-29 04:39:30,297 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:39:30,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179574123] [2023-11-29 04:39:30,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179574123] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:39:30,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:39:30,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 04:39:30,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849622396] [2023-11-29 04:39:30,298 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:39:30,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:39:30,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:39:30,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:39:30,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:39:30,300 INFO L87 Difference]: Start difference. First operand 4607 states and 6949 transitions. Second operand has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 2 states have call successors, (70), 2 states have call predecessors, (70), 4 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) [2023-11-29 04:39:30,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:39:30,895 INFO L93 Difference]: Finished difference Result 7420 states and 11155 transitions. [2023-11-29 04:39:30,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 04:39:30,896 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 2 states have call successors, (70), 2 states have call predecessors, (70), 4 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) Word has length 456 [2023-11-29 04:39:30,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:39:30,902 INFO L225 Difference]: With dead ends: 7420 [2023-11-29 04:39:30,902 INFO L226 Difference]: Without dead ends: 3145 [2023-11-29 04:39:30,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 914 GetRequests, 904 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:39:30,908 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 871 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 930 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:39:30,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [930 Valid, 936 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 04:39:30,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3145 states. [2023-11-29 04:39:31,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3145 to 2982. [2023-11-29 04:39:31,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2982 states, 2394 states have (on average 1.4553049289891395) internal successors, (3484), 2408 states have internal predecessors, (3484), 498 states have call successors, (498), 89 states have call predecessors, (498), 89 states have return successors, (498), 484 states have call predecessors, (498), 498 states have call successors, (498) [2023-11-29 04:39:31,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2982 states to 2982 states and 4480 transitions. [2023-11-29 04:39:31,180 INFO L78 Accepts]: Start accepts. Automaton has 2982 states and 4480 transitions. Word has length 456 [2023-11-29 04:39:31,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:39:31,181 INFO L495 AbstractCegarLoop]: Abstraction has 2982 states and 4480 transitions. [2023-11-29 04:39:31,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 2 states have call successors, (70), 2 states have call predecessors, (70), 4 states have return successors, (71), 2 states have call predecessors, (71), 2 states have call successors, (71) [2023-11-29 04:39:31,181 INFO L276 IsEmpty]: Start isEmpty. Operand 2982 states and 4480 transitions. [2023-11-29 04:39:31,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2023-11-29 04:39:31,186 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:39:31,186 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:39:31,195 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 04:39:31,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:31,387 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:39:31,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:39:31,388 INFO L85 PathProgramCache]: Analyzing trace with hash 32989659, now seen corresponding path program 1 times [2023-11-29 04:39:31,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:39:31,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276532385] [2023-11-29 04:39:31,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:31,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:39:31,477 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:39:31,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1431814189] [2023-11-29 04:39:31,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:31,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:31,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:39:31,478 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:39:31,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 04:39:31,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:39:31,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 1150 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:39:31,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:39:31,963 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-11-29 04:39:31,964 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:39:31,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:39:31,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276532385] [2023-11-29 04:39:31,964 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:39:31,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431814189] [2023-11-29 04:39:31,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431814189] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:39:31,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:39:31,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:39:31,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304805201] [2023-11-29 04:39:31,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:39:31,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:39:31,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:39:31,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:39:31,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:39:31,967 INFO L87 Difference]: Start difference. First operand 2982 states and 4480 transitions. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-11-29 04:39:32,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:39:32,355 INFO L93 Difference]: Finished difference Result 5852 states and 8786 transitions. [2023-11-29 04:39:32,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:39:32,355 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 456 [2023-11-29 04:39:32,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:39:32,361 INFO L225 Difference]: With dead ends: 5852 [2023-11-29 04:39:32,362 INFO L226 Difference]: Without dead ends: 3008 [2023-11-29 04:39:32,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 452 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:39:32,366 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 338 mSDsluCounter, 1432 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 1970 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:39:32,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 1970 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 04:39:32,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3008 states. [2023-11-29 04:39:32,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3008 to 2652. [2023-11-29 04:39:32,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2652 states, 2118 states have (on average 1.4504249291784703) internal successors, (3072), 2129 states have internal predecessors, (3072), 450 states have call successors, (450), 83 states have call predecessors, (450), 83 states have return successors, (450), 439 states have call predecessors, (450), 450 states have call successors, (450) [2023-11-29 04:39:32,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2652 states to 2652 states and 3972 transitions. [2023-11-29 04:39:32,643 INFO L78 Accepts]: Start accepts. Automaton has 2652 states and 3972 transitions. Word has length 456 [2023-11-29 04:39:32,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:39:32,643 INFO L495 AbstractCegarLoop]: Abstraction has 2652 states and 3972 transitions. [2023-11-29 04:39:32,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-11-29 04:39:32,643 INFO L276 IsEmpty]: Start isEmpty. Operand 2652 states and 3972 transitions. [2023-11-29 04:39:32,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2023-11-29 04:39:32,647 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:39:32,648 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:39:32,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-29 04:39:32,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:32,848 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:39:32,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:39:32,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1846141287, now seen corresponding path program 1 times [2023-11-29 04:39:32,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:39:32,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490342989] [2023-11-29 04:39:32,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:32,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:39:32,906 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:39:32,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [133432204] [2023-11-29 04:39:32,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:32,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:32,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:39:32,908 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:39:32,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 04:39:33,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:39:33,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 1151 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 04:39:33,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:39:34,354 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-11-29 04:39:34,354 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:39:34,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:39:34,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490342989] [2023-11-29 04:39:34,355 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:39:34,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133432204] [2023-11-29 04:39:34,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133432204] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:39:34,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:39:34,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:39:34,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50168865] [2023-11-29 04:39:34,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:39:34,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:39:34,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:39:34,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:39:34,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:39:34,357 INFO L87 Difference]: Start difference. First operand 2652 states and 3972 transitions. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-11-29 04:39:34,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:39:34,952 INFO L93 Difference]: Finished difference Result 5556 states and 8367 transitions. [2023-11-29 04:39:34,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:39:34,953 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 456 [2023-11-29 04:39:34,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:39:34,959 INFO L225 Difference]: With dead ends: 5556 [2023-11-29 04:39:34,959 INFO L226 Difference]: Without dead ends: 3070 [2023-11-29 04:39:34,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 451 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:39:34,964 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 543 mSDsluCounter, 1681 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 2104 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:39:34,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 2104 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 04:39:34,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3070 states. [2023-11-29 04:39:35,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3070 to 2650. [2023-11-29 04:39:35,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2650 states, 2116 states have (on average 1.449905482041588) internal successors, (3068), 2127 states have internal predecessors, (3068), 450 states have call successors, (450), 83 states have call predecessors, (450), 83 states have return successors, (450), 439 states have call predecessors, (450), 450 states have call successors, (450) [2023-11-29 04:39:35,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2650 states to 2650 states and 3968 transitions. [2023-11-29 04:39:35,162 INFO L78 Accepts]: Start accepts. Automaton has 2650 states and 3968 transitions. Word has length 456 [2023-11-29 04:39:35,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:39:35,162 INFO L495 AbstractCegarLoop]: Abstraction has 2650 states and 3968 transitions. [2023-11-29 04:39:35,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 5 states have internal predecessors, (134), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-11-29 04:39:35,163 INFO L276 IsEmpty]: Start isEmpty. Operand 2650 states and 3968 transitions. [2023-11-29 04:39:35,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2023-11-29 04:39:35,166 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:39:35,166 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:39:35,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-29 04:39:35,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 04:39:35,367 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:39:35,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:39:35,367 INFO L85 PathProgramCache]: Analyzing trace with hash 189538201, now seen corresponding path program 1 times [2023-11-29 04:39:35,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:39:35,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674308354] [2023-11-29 04:39:35,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:35,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:39:35,422 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:39:35,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [766460692] [2023-11-29 04:39:35,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:35,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:35,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:39:35,424 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:39:35,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 04:39:35,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:39:35,979 INFO L262 TraceCheckSpWp]: Trace formula consists of 1150 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 04:39:35,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:39:37,041 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 1032 proven. 180 refuted. 0 times theorem prover too weak. 7108 trivial. 0 not checked. [2023-11-29 04:39:37,041 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:39:37,323 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-11-29 04:39:37,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:39:37,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674308354] [2023-11-29 04:39:37,324 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:39:37,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766460692] [2023-11-29 04:39:37,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766460692] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-29 04:39:37,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 04:39:37,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 9 [2023-11-29 04:39:37,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367065681] [2023-11-29 04:39:37,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:39:37,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:39:37,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:39:37,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:39:37,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:39:37,327 INFO L87 Difference]: Start difference. First operand 2650 states and 3968 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-11-29 04:39:37,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:39:37,756 INFO L93 Difference]: Finished difference Result 5105 states and 7663 transitions. [2023-11-29 04:39:37,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:39:37,757 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 456 [2023-11-29 04:39:37,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:39:37,762 INFO L225 Difference]: With dead ends: 5105 [2023-11-29 04:39:37,763 INFO L226 Difference]: Without dead ends: 2650 [2023-11-29 04:39:37,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 912 GetRequests, 904 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-29 04:39:37,767 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 539 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:39:37,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [539 Valid, 420 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 04:39:37,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2650 states. [2023-11-29 04:39:37,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2650 to 2650. [2023-11-29 04:39:37,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2650 states, 2116 states have (on average 1.4447069943289226) internal successors, (3057), 2127 states have internal predecessors, (3057), 450 states have call successors, (450), 83 states have call predecessors, (450), 83 states have return successors, (450), 439 states have call predecessors, (450), 450 states have call successors, (450) [2023-11-29 04:39:37,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2650 states to 2650 states and 3957 transitions. [2023-11-29 04:39:37,999 INFO L78 Accepts]: Start accepts. Automaton has 2650 states and 3957 transitions. Word has length 456 [2023-11-29 04:39:37,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:39:37,999 INFO L495 AbstractCegarLoop]: Abstraction has 2650 states and 3957 transitions. [2023-11-29 04:39:38,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-11-29 04:39:38,000 INFO L276 IsEmpty]: Start isEmpty. Operand 2650 states and 3957 transitions. [2023-11-29 04:39:38,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2023-11-29 04:39:38,003 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:39:38,003 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:39:38,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 04:39:38,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 04:39:38,204 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:39:38,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:39:38,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1272897235, now seen corresponding path program 1 times [2023-11-29 04:39:38,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:39:38,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743936130] [2023-11-29 04:39:38,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:38,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:39:38,249 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:39:38,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [18181919] [2023-11-29 04:39:38,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:38,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:38,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:39:38,251 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:39:38,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 04:39:38,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:39:38,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 1151 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 04:39:38,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:39:39,607 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-11-29 04:39:39,608 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:39:39,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:39:39,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743936130] [2023-11-29 04:39:39,608 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:39:39,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18181919] [2023-11-29 04:39:39,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18181919] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:39:39,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:39:39,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:39:39,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562748397] [2023-11-29 04:39:39,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:39:39,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:39:39,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:39:39,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:39:39,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:39:39,611 INFO L87 Difference]: Start difference. First operand 2650 states and 3957 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-11-29 04:39:40,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:39:40,155 INFO L93 Difference]: Finished difference Result 5525 states and 8296 transitions. [2023-11-29 04:39:40,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:39:40,156 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 457 [2023-11-29 04:39:40,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:39:40,161 INFO L225 Difference]: With dead ends: 5525 [2023-11-29 04:39:40,161 INFO L226 Difference]: Without dead ends: 3070 [2023-11-29 04:39:40,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 453 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 04:39:40,165 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 445 mSDsluCounter, 1101 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 1522 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:39:40,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 1522 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 04:39:40,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3070 states. [2023-11-29 04:39:40,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3070 to 2650. [2023-11-29 04:39:40,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2650 states, 2116 states have (on average 1.443289224952741) internal successors, (3054), 2127 states have internal predecessors, (3054), 450 states have call successors, (450), 83 states have call predecessors, (450), 83 states have return successors, (450), 439 states have call predecessors, (450), 450 states have call successors, (450) [2023-11-29 04:39:40,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2650 states to 2650 states and 3954 transitions. [2023-11-29 04:39:40,385 INFO L78 Accepts]: Start accepts. Automaton has 2650 states and 3954 transitions. Word has length 457 [2023-11-29 04:39:40,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:39:40,386 INFO L495 AbstractCegarLoop]: Abstraction has 2650 states and 3954 transitions. [2023-11-29 04:39:40,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-11-29 04:39:40,386 INFO L276 IsEmpty]: Start isEmpty. Operand 2650 states and 3954 transitions. [2023-11-29 04:39:40,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2023-11-29 04:39:40,389 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:39:40,389 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:39:40,396 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-29 04:39:40,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 04:39:40,590 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:39:40,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:39:40,590 INFO L85 PathProgramCache]: Analyzing trace with hash -2134847215, now seen corresponding path program 1 times [2023-11-29 04:39:40,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:39:40,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797135492] [2023-11-29 04:39:40,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:40,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:39:40,679 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:39:40,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [885735880] [2023-11-29 04:39:40,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:40,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:40,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:39:40,680 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:39:40,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 04:39:41,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:39:41,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 1151 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 04:39:41,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:39:42,176 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 5522 proven. 255 refuted. 0 times theorem prover too weak. 2543 trivial. 0 not checked. [2023-11-29 04:39:42,176 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:39:43,918 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 303 proven. 264 refuted. 0 times theorem prover too weak. 7753 trivial. 0 not checked. [2023-11-29 04:39:43,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:39:43,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797135492] [2023-11-29 04:39:43,919 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:39:43,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885735880] [2023-11-29 04:39:43,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885735880] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:39:43,919 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:39:43,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 29 [2023-11-29 04:39:43,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323323377] [2023-11-29 04:39:43,920 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:39:43,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 04:39:43,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:39:43,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 04:39:43,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=646, Unknown=0, NotChecked=0, Total=812 [2023-11-29 04:39:43,923 INFO L87 Difference]: Start difference. First operand 2650 states and 3954 transitions. Second operand has 29 states, 28 states have (on average 8.357142857142858) internal successors, (234), 27 states have internal predecessors, (234), 7 states have call successors, (106), 4 states have call predecessors, (106), 9 states have return successors, (107), 7 states have call predecessors, (107), 7 states have call successors, (107) [2023-11-29 04:39:49,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:39:49,169 INFO L93 Difference]: Finished difference Result 16709 states and 24574 transitions. [2023-11-29 04:39:49,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-11-29 04:39:49,170 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 8.357142857142858) internal successors, (234), 27 states have internal predecessors, (234), 7 states have call successors, (106), 4 states have call predecessors, (106), 9 states have return successors, (107), 7 states have call predecessors, (107), 7 states have call successors, (107) Word has length 457 [2023-11-29 04:39:49,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:39:49,188 INFO L225 Difference]: With dead ends: 16709 [2023-11-29 04:39:49,189 INFO L226 Difference]: Without dead ends: 14332 [2023-11-29 04:39:49,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 976 GetRequests, 894 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1883 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1709, Invalid=5263, Unknown=0, NotChecked=0, Total=6972 [2023-11-29 04:39:49,197 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 4579 mSDsluCounter, 4272 mSDsCounter, 0 mSdLazyCounter, 2581 mSolverCounterSat, 1075 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4623 SdHoareTripleChecker+Valid, 4650 SdHoareTripleChecker+Invalid, 3656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1075 IncrementalHoareTripleChecker+Valid, 2581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:39:49,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4623 Valid, 4650 Invalid, 3656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1075 Valid, 2581 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-29 04:39:49,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14332 states. [2023-11-29 04:39:50,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14332 to 6100. [2023-11-29 04:39:50,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6100 states, 5128 states have (on average 1.469578783151326) internal successors, (7536), 5155 states have internal predecessors, (7536), 770 states have call successors, (770), 201 states have call predecessors, (770), 201 states have return successors, (770), 743 states have call predecessors, (770), 770 states have call successors, (770) [2023-11-29 04:39:50,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6100 states to 6100 states and 9076 transitions. [2023-11-29 04:39:50,032 INFO L78 Accepts]: Start accepts. Automaton has 6100 states and 9076 transitions. Word has length 457 [2023-11-29 04:39:50,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:39:50,032 INFO L495 AbstractCegarLoop]: Abstraction has 6100 states and 9076 transitions. [2023-11-29 04:39:50,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 8.357142857142858) internal successors, (234), 27 states have internal predecessors, (234), 7 states have call successors, (106), 4 states have call predecessors, (106), 9 states have return successors, (107), 7 states have call predecessors, (107), 7 states have call successors, (107) [2023-11-29 04:39:50,033 INFO L276 IsEmpty]: Start isEmpty. Operand 6100 states and 9076 transitions. [2023-11-29 04:39:50,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2023-11-29 04:39:50,038 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:39:50,038 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:39:50,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-29 04:39:50,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-29 04:39:50,239 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:39:50,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:39:50,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1886700721, now seen corresponding path program 1 times [2023-11-29 04:39:50,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:39:50,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012907653] [2023-11-29 04:39:50,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:50,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:39:50,284 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:39:50,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1017227283] [2023-11-29 04:39:50,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:50,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:50,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:39:50,285 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:39:50,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 04:39:50,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:39:50,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 1149 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 04:39:50,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:39:51,369 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 1774 proven. 21 refuted. 0 times theorem prover too weak. 6525 trivial. 0 not checked. [2023-11-29 04:39:51,369 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:39:51,703 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 171 proven. 21 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2023-11-29 04:39:51,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:39:51,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012907653] [2023-11-29 04:39:51,703 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:39:51,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017227283] [2023-11-29 04:39:51,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017227283] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:39:51,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:39:51,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-11-29 04:39:51,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135242062] [2023-11-29 04:39:51,704 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:39:51,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 04:39:51,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:39:51,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 04:39:51,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-11-29 04:39:51,706 INFO L87 Difference]: Start difference. First operand 6100 states and 9076 transitions. Second operand has 14 states, 14 states have (on average 14.142857142857142) internal successors, (198), 14 states have internal predecessors, (198), 4 states have call successors, (130), 3 states have call predecessors, (130), 5 states have return successors, (130), 4 states have call predecessors, (130), 4 states have call successors, (130) [2023-11-29 04:39:55,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:39:55,560 INFO L93 Difference]: Finished difference Result 24904 states and 37569 transitions. [2023-11-29 04:39:55,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 04:39:55,561 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 14.142857142857142) internal successors, (198), 14 states have internal predecessors, (198), 4 states have call successors, (130), 3 states have call predecessors, (130), 5 states have return successors, (130), 4 states have call predecessors, (130), 4 states have call successors, (130) Word has length 457 [2023-11-29 04:39:55,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:39:55,579 INFO L225 Difference]: With dead ends: 24904 [2023-11-29 04:39:55,579 INFO L226 Difference]: Without dead ends: 18994 [2023-11-29 04:39:55,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 937 GetRequests, 904 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 04:39:55,588 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 3234 mSDsluCounter, 3377 mSDsCounter, 0 mSdLazyCounter, 1856 mSolverCounterSat, 965 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3298 SdHoareTripleChecker+Valid, 3736 SdHoareTripleChecker+Invalid, 2821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 965 IncrementalHoareTripleChecker+Valid, 1856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 04:39:55,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3298 Valid, 3736 Invalid, 2821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [965 Valid, 1856 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 04:39:55,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18994 states. [2023-11-29 04:39:56,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18994 to 7716. [2023-11-29 04:39:56,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7716 states, 6185 states have (on average 1.4219886822958772) internal successors, (8795), 6224 states have internal predecessors, (8795), 1209 states have call successors, (1209), 321 states have call predecessors, (1209), 321 states have return successors, (1209), 1170 states have call predecessors, (1209), 1209 states have call successors, (1209) [2023-11-29 04:39:56,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7716 states to 7716 states and 11213 transitions. [2023-11-29 04:39:56,808 INFO L78 Accepts]: Start accepts. Automaton has 7716 states and 11213 transitions. Word has length 457 [2023-11-29 04:39:56,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:39:56,808 INFO L495 AbstractCegarLoop]: Abstraction has 7716 states and 11213 transitions. [2023-11-29 04:39:56,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 14.142857142857142) internal successors, (198), 14 states have internal predecessors, (198), 4 states have call successors, (130), 3 states have call predecessors, (130), 5 states have return successors, (130), 4 states have call predecessors, (130), 4 states have call successors, (130) [2023-11-29 04:39:56,809 INFO L276 IsEmpty]: Start isEmpty. Operand 7716 states and 11213 transitions. [2023-11-29 04:39:56,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2023-11-29 04:39:56,812 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:39:56,812 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:39:56,820 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-29 04:39:57,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-29 04:39:57,013 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:39:57,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:39:57,013 INFO L85 PathProgramCache]: Analyzing trace with hash -319942771, now seen corresponding path program 1 times [2023-11-29 04:39:57,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:39:57,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393250856] [2023-11-29 04:39:57,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:57,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:39:57,055 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:39:57,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1332815166] [2023-11-29 04:39:57,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:39:57,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:39:57,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:39:57,057 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:39:57,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 04:39:57,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:39:57,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 1149 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-29 04:39:57,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:39:59,361 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 4419 proven. 830 refuted. 0 times theorem prover too weak. 3071 trivial. 0 not checked. [2023-11-29 04:39:59,361 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:40:00,526 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 249 proven. 318 refuted. 0 times theorem prover too weak. 7753 trivial. 0 not checked. [2023-11-29 04:40:00,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:40:00,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393250856] [2023-11-29 04:40:00,526 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:40:00,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332815166] [2023-11-29 04:40:00,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332815166] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:40:00,526 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:40:00,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 13] total 32 [2023-11-29 04:40:00,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479559725] [2023-11-29 04:40:00,527 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:40:00,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-29 04:40:00,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:40:00,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-29 04:40:00,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=719, Unknown=0, NotChecked=0, Total=992 [2023-11-29 04:40:00,530 INFO L87 Difference]: Start difference. First operand 7716 states and 11213 transitions. Second operand has 32 states, 30 states have (on average 9.066666666666666) internal successors, (272), 27 states have internal predecessors, (272), 9 states have call successors, (125), 6 states have call predecessors, (125), 12 states have return successors, (126), 9 states have call predecessors, (126), 9 states have call successors, (126) [2023-11-29 04:40:05,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:40:05,974 INFO L93 Difference]: Finished difference Result 27860 states and 40029 transitions. [2023-11-29 04:40:05,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-29 04:40:05,975 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 9.066666666666666) internal successors, (272), 27 states have internal predecessors, (272), 9 states have call successors, (125), 6 states have call predecessors, (125), 12 states have return successors, (126), 9 states have call predecessors, (126), 9 states have call successors, (126) Word has length 457 [2023-11-29 04:40:05,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:40:05,996 INFO L225 Difference]: With dead ends: 27860 [2023-11-29 04:40:05,997 INFO L226 Difference]: Without dead ends: 20802 [2023-11-29 04:40:06,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 957 GetRequests, 888 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1332 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1352, Invalid=3618, Unknown=0, NotChecked=0, Total=4970 [2023-11-29 04:40:06,006 INFO L413 NwaCegarLoop]: 505 mSDtfsCounter, 2317 mSDsluCounter, 2744 mSDsCounter, 0 mSdLazyCounter, 2791 mSolverCounterSat, 565 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2320 SdHoareTripleChecker+Valid, 3249 SdHoareTripleChecker+Invalid, 3356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 565 IncrementalHoareTripleChecker+Valid, 2791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 04:40:06,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2320 Valid, 3249 Invalid, 3356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [565 Valid, 2791 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 04:40:06,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20802 states. [2023-11-29 04:40:07,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20802 to 11582. [2023-11-29 04:40:07,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11582 states, 9827 states have (on average 1.462195990638038) internal successors, (14369), 9865 states have internal predecessors, (14369), 1291 states have call successors, (1291), 463 states have call predecessors, (1291), 463 states have return successors, (1291), 1253 states have call predecessors, (1291), 1291 states have call successors, (1291) [2023-11-29 04:40:07,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11582 states to 11582 states and 16951 transitions. [2023-11-29 04:40:07,904 INFO L78 Accepts]: Start accepts. Automaton has 11582 states and 16951 transitions. Word has length 457 [2023-11-29 04:40:07,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:40:07,904 INFO L495 AbstractCegarLoop]: Abstraction has 11582 states and 16951 transitions. [2023-11-29 04:40:07,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 9.066666666666666) internal successors, (272), 27 states have internal predecessors, (272), 9 states have call successors, (125), 6 states have call predecessors, (125), 12 states have return successors, (126), 9 states have call predecessors, (126), 9 states have call successors, (126) [2023-11-29 04:40:07,905 INFO L276 IsEmpty]: Start isEmpty. Operand 11582 states and 16951 transitions. [2023-11-29 04:40:07,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2023-11-29 04:40:07,909 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:40:07,909 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:40:07,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-29 04:40:08,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 04:40:08,110 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:40:08,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:40:08,110 INFO L85 PathProgramCache]: Analyzing trace with hash 2047573530, now seen corresponding path program 1 times [2023-11-29 04:40:08,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:40:08,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903248606] [2023-11-29 04:40:08,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:40:08,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:40:08,155 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:40:08,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [806341194] [2023-11-29 04:40:08,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:40:08,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:40:08,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:40:08,157 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:40:08,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 04:40:08,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:40:08,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 1149 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 04:40:08,745 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:40:09,875 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 4328 proven. 291 refuted. 0 times theorem prover too weak. 3701 trivial. 0 not checked. [2023-11-29 04:40:09,875 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:40:13,194 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 78 proven. 114 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2023-11-29 04:40:13,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:40:13,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903248606] [2023-11-29 04:40:13,195 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:40:13,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806341194] [2023-11-29 04:40:13,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806341194] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:40:13,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:40:13,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2023-11-29 04:40:13,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010638305] [2023-11-29 04:40:13,195 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:40:13,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 04:40:13,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:40:13,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 04:40:13,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2023-11-29 04:40:13,198 INFO L87 Difference]: Start difference. First operand 11582 states and 16951 transitions. Second operand has 17 states, 17 states have (on average 14.941176470588236) internal successors, (254), 17 states have internal predecessors, (254), 4 states have call successors, (125), 3 states have call predecessors, (125), 6 states have return successors, (126), 4 states have call predecessors, (126), 4 states have call successors, (126) [2023-11-29 04:40:20,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:40:20,893 INFO L93 Difference]: Finished difference Result 37912 states and 55757 transitions. [2023-11-29 04:40:20,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-11-29 04:40:20,894 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 14.941176470588236) internal successors, (254), 17 states have internal predecessors, (254), 4 states have call successors, (125), 3 states have call predecessors, (125), 6 states have return successors, (126), 4 states have call predecessors, (126), 4 states have call successors, (126) Word has length 457 [2023-11-29 04:40:20,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:40:20,922 INFO L225 Difference]: With dead ends: 37912 [2023-11-29 04:40:20,922 INFO L226 Difference]: Without dead ends: 27769 [2023-11-29 04:40:20,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 975 GetRequests, 903 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1742 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1260, Invalid=4142, Unknown=0, NotChecked=0, Total=5402 [2023-11-29 04:40:20,933 INFO L413 NwaCegarLoop]: 550 mSDtfsCounter, 3733 mSDsluCounter, 3077 mSDsCounter, 0 mSdLazyCounter, 3108 mSolverCounterSat, 507 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3738 SdHoareTripleChecker+Valid, 3627 SdHoareTripleChecker+Invalid, 3615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 507 IncrementalHoareTripleChecker+Valid, 3108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-29 04:40:20,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3738 Valid, 3627 Invalid, 3615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [507 Valid, 3108 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-29 04:40:20,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27769 states. [2023-11-29 04:40:22,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27769 to 14968. [2023-11-29 04:40:22,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14968 states, 13524 states have (on average 1.5129399585921326) internal successors, (20461), 13555 states have internal predecessors, (20461), 1066 states have call successors, (1066), 377 states have call predecessors, (1066), 377 states have return successors, (1066), 1035 states have call predecessors, (1066), 1066 states have call successors, (1066) [2023-11-29 04:40:22,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14968 states to 14968 states and 22593 transitions. [2023-11-29 04:40:22,950 INFO L78 Accepts]: Start accepts. Automaton has 14968 states and 22593 transitions. Word has length 457 [2023-11-29 04:40:22,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:40:22,950 INFO L495 AbstractCegarLoop]: Abstraction has 14968 states and 22593 transitions. [2023-11-29 04:40:22,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 14.941176470588236) internal successors, (254), 17 states have internal predecessors, (254), 4 states have call successors, (125), 3 states have call predecessors, (125), 6 states have return successors, (126), 4 states have call predecessors, (126), 4 states have call successors, (126) [2023-11-29 04:40:22,950 INFO L276 IsEmpty]: Start isEmpty. Operand 14968 states and 22593 transitions. [2023-11-29 04:40:22,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2023-11-29 04:40:22,957 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:40:22,957 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:40:22,966 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-29 04:40:23,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 04:40:23,158 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:40:23,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:40:23,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1568121512, now seen corresponding path program 1 times [2023-11-29 04:40:23,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:40:23,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668222381] [2023-11-29 04:40:23,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:40:23,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:40:23,203 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:40:23,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2034231236] [2023-11-29 04:40:23,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:40:23,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:40:23,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:40:23,205 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:40:23,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-29 04:40:23,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:40:23,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 1147 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 04:40:23,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:40:24,644 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 4308 proven. 180 refuted. 0 times theorem prover too weak. 3832 trivial. 0 not checked. [2023-11-29 04:40:24,645 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:40:24,935 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 12 proven. 180 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2023-11-29 04:40:24,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:40:24,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668222381] [2023-11-29 04:40:24,935 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:40:24,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034231236] [2023-11-29 04:40:24,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034231236] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:40:24,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:40:24,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-11-29 04:40:24,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803137486] [2023-11-29 04:40:24,936 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:40:24,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 04:40:24,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:40:24,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 04:40:24,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-11-29 04:40:24,938 INFO L87 Difference]: Start difference. First operand 14968 states and 22593 transitions. Second operand has 13 states, 13 states have (on average 15.461538461538462) internal successors, (201), 13 states have internal predecessors, (201), 4 states have call successors, (125), 3 states have call predecessors, (125), 5 states have return successors, (126), 4 states have call predecessors, (126), 4 states have call successors, (126) [2023-11-29 04:40:27,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:40:27,491 INFO L93 Difference]: Finished difference Result 26989 states and 40657 transitions. [2023-11-29 04:40:27,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 04:40:27,492 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 15.461538461538462) internal successors, (201), 13 states have internal predecessors, (201), 4 states have call successors, (125), 3 states have call predecessors, (125), 5 states have return successors, (126), 4 states have call predecessors, (126), 4 states have call successors, (126) Word has length 457 [2023-11-29 04:40:27,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:40:27,507 INFO L225 Difference]: With dead ends: 26989 [2023-11-29 04:40:27,507 INFO L226 Difference]: Without dead ends: 14418 [2023-11-29 04:40:27,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 924 GetRequests, 901 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2023-11-29 04:40:27,516 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 1469 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1469 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:40:27,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1469 Valid, 1262 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 892 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 04:40:27,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14418 states. [2023-11-29 04:40:28,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14418 to 7104. [2023-11-29 04:40:28,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7104 states, 6651 states have (on average 1.5534506089309879) internal successors, (10332), 6656 states have internal predecessors, (10332), 330 states have call successors, (330), 122 states have call predecessors, (330), 122 states have return successors, (330), 325 states have call predecessors, (330), 330 states have call successors, (330) [2023-11-29 04:40:28,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7104 states to 7104 states and 10992 transitions. [2023-11-29 04:40:28,153 INFO L78 Accepts]: Start accepts. Automaton has 7104 states and 10992 transitions. Word has length 457 [2023-11-29 04:40:28,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:40:28,153 INFO L495 AbstractCegarLoop]: Abstraction has 7104 states and 10992 transitions. [2023-11-29 04:40:28,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.461538461538462) internal successors, (201), 13 states have internal predecessors, (201), 4 states have call successors, (125), 3 states have call predecessors, (125), 5 states have return successors, (126), 4 states have call predecessors, (126), 4 states have call successors, (126) [2023-11-29 04:40:28,154 INFO L276 IsEmpty]: Start isEmpty. Operand 7104 states and 10992 transitions. [2023-11-29 04:40:28,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2023-11-29 04:40:28,158 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:40:28,158 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:40:28,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-11-29 04:40:28,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-29 04:40:28,359 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:40:28,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:40:28,359 INFO L85 PathProgramCache]: Analyzing trace with hash -145406575, now seen corresponding path program 1 times [2023-11-29 04:40:28,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:40:28,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713919087] [2023-11-29 04:40:28,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:40:28,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:40:28,415 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:40:28,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2018070140] [2023-11-29 04:40:28,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:40:28,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:40:28,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:40:28,416 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:40:28,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-29 04:40:29,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:40:29,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 1150 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-29 04:40:29,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:40:30,836 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 5756 proven. 561 refuted. 0 times theorem prover too weak. 2003 trivial. 0 not checked. [2023-11-29 04:40:30,836 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:40:32,469 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 333 proven. 417 refuted. 0 times theorem prover too weak. 7570 trivial. 0 not checked. [2023-11-29 04:40:32,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:40:32,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713919087] [2023-11-29 04:40:32,469 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:40:32,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018070140] [2023-11-29 04:40:32,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018070140] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:40:32,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:40:32,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 38 [2023-11-29 04:40:32,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317737638] [2023-11-29 04:40:32,470 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:40:32,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-29 04:40:32,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:40:32,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-29 04:40:32,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=1150, Unknown=0, NotChecked=0, Total=1406 [2023-11-29 04:40:32,473 INFO L87 Difference]: Start difference. First operand 7104 states and 10992 transitions. Second operand has 38 states, 37 states have (on average 7.54054054054054) internal successors, (279), 36 states have internal predecessors, (279), 9 states have call successors, (122), 5 states have call predecessors, (122), 12 states have return successors, (124), 9 states have call predecessors, (124), 9 states have call successors, (124) [2023-11-29 04:40:45,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:40:45,892 INFO L93 Difference]: Finished difference Result 33331 states and 51764 transitions. [2023-11-29 04:40:45,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2023-11-29 04:40:45,893 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 7.54054054054054) internal successors, (279), 36 states have internal predecessors, (279), 9 states have call successors, (122), 5 states have call predecessors, (122), 12 states have return successors, (124), 9 states have call predecessors, (124), 9 states have call successors, (124) Word has length 458 [2023-11-29 04:40:45,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:40:45,915 INFO L225 Difference]: With dead ends: 33331 [2023-11-29 04:40:45,915 INFO L226 Difference]: Without dead ends: 26643 [2023-11-29 04:40:45,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1055 GetRequests, 898 SyntacticMatches, 0 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8163 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=5452, Invalid=19670, Unknown=0, NotChecked=0, Total=25122 [2023-11-29 04:40:45,928 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 6647 mSDsluCounter, 4764 mSDsCounter, 0 mSdLazyCounter, 6614 mSolverCounterSat, 1485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6653 SdHoareTripleChecker+Valid, 5234 SdHoareTripleChecker+Invalid, 8099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1485 IncrementalHoareTripleChecker+Valid, 6614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:40:45,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6653 Valid, 5234 Invalid, 8099 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1485 Valid, 6614 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-11-29 04:40:45,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26643 states. [2023-11-29 04:40:47,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26643 to 16203. [2023-11-29 04:40:47,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16203 states, 15562 states have (on average 1.5663153836267831) internal successors, (24375), 15571 states have internal predecessors, (24375), 447 states have call successors, (447), 193 states have call predecessors, (447), 193 states have return successors, (447), 438 states have call predecessors, (447), 447 states have call successors, (447) [2023-11-29 04:40:47,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16203 states to 16203 states and 25269 transitions. [2023-11-29 04:40:47,038 INFO L78 Accepts]: Start accepts. Automaton has 16203 states and 25269 transitions. Word has length 458 [2023-11-29 04:40:47,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:40:47,038 INFO L495 AbstractCegarLoop]: Abstraction has 16203 states and 25269 transitions. [2023-11-29 04:40:47,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 7.54054054054054) internal successors, (279), 36 states have internal predecessors, (279), 9 states have call successors, (122), 5 states have call predecessors, (122), 12 states have return successors, (124), 9 states have call predecessors, (124), 9 states have call successors, (124) [2023-11-29 04:40:47,039 INFO L276 IsEmpty]: Start isEmpty. Operand 16203 states and 25269 transitions. [2023-11-29 04:40:47,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2023-11-29 04:40:47,044 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:40:47,045 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:40:47,052 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-11-29 04:40:47,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 04:40:47,245 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:40:47,245 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:40:47,246 INFO L85 PathProgramCache]: Analyzing trace with hash 190711601, now seen corresponding path program 1 times [2023-11-29 04:40:47,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:40:47,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201294273] [2023-11-29 04:40:47,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:40:47,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:40:47,291 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:40:47,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [888654091] [2023-11-29 04:40:47,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:40:47,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:40:47,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:40:47,293 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:40:47,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-29 04:40:47,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:40:47,783 INFO L262 TraceCheckSpWp]: Trace formula consists of 1146 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 04:40:47,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:40:47,933 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-11-29 04:40:47,933 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:40:47,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:40:47,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201294273] [2023-11-29 04:40:47,934 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:40:47,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888654091] [2023-11-29 04:40:47,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888654091] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:40:47,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:40:47,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:40:47,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356616436] [2023-11-29 04:40:47,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:40:47,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:40:47,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:40:47,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:40:47,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:40:47,936 INFO L87 Difference]: Start difference. First operand 16203 states and 25269 transitions. Second operand has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-11-29 04:40:49,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:40:49,717 INFO L93 Difference]: Finished difference Result 35430 states and 55655 transitions. [2023-11-29 04:40:49,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:40:49,717 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 458 [2023-11-29 04:40:49,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:40:49,734 INFO L225 Difference]: With dead ends: 35430 [2023-11-29 04:40:49,734 INFO L226 Difference]: Without dead ends: 21045 [2023-11-29 04:40:49,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 461 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:40:49,744 INFO L413 NwaCegarLoop]: 784 mSDtfsCounter, 907 mSDsluCounter, 2449 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 3233 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 04:40:49,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 3233 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 04:40:49,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21045 states. [2023-11-29 04:40:50,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21045 to 13319. [2023-11-29 04:40:50,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13319 states, 12813 states have (on average 1.5609927417466636) internal successors, (20001), 12817 states have internal predecessors, (20001), 351 states have call successors, (351), 154 states have call predecessors, (351), 154 states have return successors, (351), 347 states have call predecessors, (351), 351 states have call successors, (351) [2023-11-29 04:40:50,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13319 states to 13319 states and 20703 transitions. [2023-11-29 04:40:50,698 INFO L78 Accepts]: Start accepts. Automaton has 13319 states and 20703 transitions. Word has length 458 [2023-11-29 04:40:50,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:40:50,698 INFO L495 AbstractCegarLoop]: Abstraction has 13319 states and 20703 transitions. [2023-11-29 04:40:50,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.666666666666668) internal successors, (136), 6 states have internal predecessors, (136), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-11-29 04:40:50,698 INFO L276 IsEmpty]: Start isEmpty. Operand 13319 states and 20703 transitions. [2023-11-29 04:40:50,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2023-11-29 04:40:50,703 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:40:50,703 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:40:50,710 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-11-29 04:40:50,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:40:50,904 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:40:50,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:40:50,904 INFO L85 PathProgramCache]: Analyzing trace with hash 511222640, now seen corresponding path program 1 times [2023-11-29 04:40:50,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:40:50,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534442639] [2023-11-29 04:40:50,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:40:50,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:40:50,949 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:40:50,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2010587056] [2023-11-29 04:40:50,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:40:50,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:40:50,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:40:50,951 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:40:50,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-29 04:40:51,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:40:51,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 1142 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 04:40:51,447 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:40:51,635 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-11-29 04:40:51,635 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:40:51,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:40:51,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534442639] [2023-11-29 04:40:51,636 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:40:51,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010587056] [2023-11-29 04:40:51,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010587056] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:40:51,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:40:51,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:40:51,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591761440] [2023-11-29 04:40:51,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:40:51,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:40:51,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:40:51,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:40:51,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:40:51,638 INFO L87 Difference]: Start difference. First operand 13319 states and 20703 transitions. Second operand has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-11-29 04:40:53,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:40:53,350 INFO L93 Difference]: Finished difference Result 31867 states and 49700 transitions. [2023-11-29 04:40:53,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:40:53,351 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) Word has length 459 [2023-11-29 04:40:53,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:40:53,365 INFO L225 Difference]: With dead ends: 31867 [2023-11-29 04:40:53,365 INFO L226 Difference]: Without dead ends: 21061 [2023-11-29 04:40:53,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 455 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:40:53,369 INFO L413 NwaCegarLoop]: 571 mSDtfsCounter, 652 mSDsluCounter, 1439 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 2010 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 04:40:53,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 2010 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 04:40:53,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21061 states. [2023-11-29 04:40:54,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21061 to 17601. [2023-11-29 04:40:54,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17601 states, 17095 states have (on average 1.5719801111436091) internal successors, (26873), 17099 states have internal predecessors, (26873), 351 states have call successors, (351), 154 states have call predecessors, (351), 154 states have return successors, (351), 347 states have call predecessors, (351), 351 states have call successors, (351) [2023-11-29 04:40:54,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17601 states to 17601 states and 27575 transitions. [2023-11-29 04:40:54,285 INFO L78 Accepts]: Start accepts. Automaton has 17601 states and 27575 transitions. Word has length 459 [2023-11-29 04:40:54,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:40:54,286 INFO L495 AbstractCegarLoop]: Abstraction has 17601 states and 27575 transitions. [2023-11-29 04:40:54,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.4) internal successors, (137), 5 states have internal predecessors, (137), 1 states have call successors, (65), 1 states have call predecessors, (65), 1 states have return successors, (65), 1 states have call predecessors, (65), 1 states have call successors, (65) [2023-11-29 04:40:54,286 INFO L276 IsEmpty]: Start isEmpty. Operand 17601 states and 27575 transitions. [2023-11-29 04:40:54,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2023-11-29 04:40:54,292 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:40:54,292 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:40:54,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-29 04:40:54,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-11-29 04:40:54,493 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:40:54,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:40:54,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1110362198, now seen corresponding path program 1 times [2023-11-29 04:40:54,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:40:54,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38032447] [2023-11-29 04:40:54,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:40:54,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:40:54,545 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:40:54,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1396568536] [2023-11-29 04:40:54,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:40:54,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:40:54,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:40:54,547 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:40:54,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-29 04:40:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:40:55,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 1145 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:40:55,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:40:55,362 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 3718 proven. 129 refuted. 0 times theorem prover too weak. 4473 trivial. 0 not checked. [2023-11-29 04:40:55,362 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:40:55,564 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 63 proven. 129 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2023-11-29 04:40:55,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 04:40:55,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38032447] [2023-11-29 04:40:55,564 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 04:40:55,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396568536] [2023-11-29 04:40:55,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396568536] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:40:55,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:40:55,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 04:40:55,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872612914] [2023-11-29 04:40:55,565 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:40:55,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 04:40:55,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 04:40:55,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 04:40:55,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:40:55,567 INFO L87 Difference]: Start difference. First operand 17601 states and 27575 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 2 states have call successors, (108), 2 states have call predecessors, (108), 4 states have return successors, (109), 2 states have call predecessors, (109), 2 states have call successors, (109) [2023-11-29 04:40:56,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:40:56,671 INFO L93 Difference]: Finished difference Result 26927 states and 42137 transitions. [2023-11-29 04:40:56,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 04:40:56,672 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 2 states have call successors, (108), 2 states have call predecessors, (108), 4 states have return successors, (109), 2 states have call predecessors, (109), 2 states have call successors, (109) Word has length 459 [2023-11-29 04:40:56,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:40:56,681 INFO L225 Difference]: With dead ends: 26927 [2023-11-29 04:40:56,681 INFO L226 Difference]: Without dead ends: 11078 [2023-11-29 04:40:56,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 920 GetRequests, 910 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 04:40:56,689 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 517 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:40:56,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [537 Valid, 869 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 04:40:56,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11078 states. [2023-11-29 04:40:57,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11078 to 10998. [2023-11-29 04:40:57,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10998 states, 10585 states have (on average 1.55701464336325) internal successors, (16481), 10589 states have internal predecessors, (16481), 286 states have call successors, (286), 126 states have call predecessors, (286), 126 states have return successors, (286), 282 states have call predecessors, (286), 286 states have call successors, (286) [2023-11-29 04:40:57,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10998 states to 10998 states and 17053 transitions. [2023-11-29 04:40:57,402 INFO L78 Accepts]: Start accepts. Automaton has 10998 states and 17053 transitions. Word has length 459 [2023-11-29 04:40:57,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:40:57,402 INFO L495 AbstractCegarLoop]: Abstraction has 10998 states and 17053 transitions. [2023-11-29 04:40:57,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 7 states have internal predecessors, (146), 2 states have call successors, (108), 2 states have call predecessors, (108), 4 states have return successors, (109), 2 states have call predecessors, (109), 2 states have call successors, (109) [2023-11-29 04:40:57,402 INFO L276 IsEmpty]: Start isEmpty. Operand 10998 states and 17053 transitions. [2023-11-29 04:40:57,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2023-11-29 04:40:57,406 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:40:57,406 INFO L195 NwaCegarLoop]: trace histogram [65, 65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:40:57,413 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-11-29 04:40:57,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:40:57,607 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 04:40:57,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:40:57,607 INFO L85 PathProgramCache]: Analyzing trace with hash -502339207, now seen corresponding path program 1 times [2023-11-29 04:40:57,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 04:40:57,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757073180] [2023-11-29 04:40:57,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:40:57,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 04:40:57,656 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 04:40:57,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2012969966] [2023-11-29 04:40:57,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:40:57,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 04:40:57,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:40:57,658 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 04:40:57,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b2a6d06-6fc4-4f92-8586-960017a3bdfc/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-29 04:40:58,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:40:58,462 INFO L262 TraceCheckSpWp]: Trace formula consists of 1149 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-29 04:40:58,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:41:02,675 INFO L134 CoverageAnalysis]: Checked inductivity of 8320 backedges. 5022 proven. 696 refuted. 0 times theorem prover too weak. 2602 trivial. 0 not checked. [2023-11-29 04:41:02,676 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:42:12,503 WARN L293 SmtUtils]: Spent 33.89s on a formula simplification that was a NOOP. DAG size: 88 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:43:16,639 WARN L293 SmtUtils]: Spent 6.05s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:44:33,517 WARN L293 SmtUtils]: Spent 37.30s on a formula simplification that was a NOOP. DAG size: 86 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-29 04:44:41,697 WARN L293 SmtUtils]: Spent 6.29s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:45:00,246 WARN L293 SmtUtils]: Spent 5.45s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:45:19,759 WARN L293 SmtUtils]: Spent 6.49s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:47:05,542 WARN L293 SmtUtils]: Spent 5.74s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:47:34,918 WARN L293 SmtUtils]: Spent 5.24s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:47:44,808 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:48:19,832 WARN L293 SmtUtils]: Spent 7.12s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:49:10,061 WARN L293 SmtUtils]: Spent 12.91s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:49:27,851 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:50:03,643 WARN L293 SmtUtils]: Spent 5.39s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:50:19,123 WARN L293 SmtUtils]: Spent 5.19s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:50:43,796 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 04:51:41,733 WARN L293 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)