./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-15.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_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/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_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-15.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/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_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/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 74819a618e8737460ffe2d5e187bd0878af8b759d0d399e9d2ada8d393705a62 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:04:17,297 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:04:17,373 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 01:04:17,377 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:04:17,378 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:04:17,400 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:04:17,400 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:04:17,401 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:04:17,401 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:04:17,402 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:04:17,402 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:04:17,403 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:04:17,403 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:04:17,404 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:04:17,404 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:04:17,405 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:04:17,405 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:04:17,406 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:04:17,406 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:04:17,407 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:04:17,407 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:04:17,408 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:04:17,408 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:04:17,409 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:04:17,409 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:04:17,409 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:04:17,410 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:04:17,411 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:04:17,411 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:04:17,411 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:04:17,412 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:04:17,412 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:04:17,412 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:04:17,413 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:04:17,413 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:04:17,413 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:04:17,413 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:04:17,413 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:04:17,414 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:04:17,414 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:04:17,414 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:04:17,414 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:04:17,414 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_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74819a618e8737460ffe2d5e187bd0878af8b759d0d399e9d2ada8d393705a62 [2023-11-29 01:04:17,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:04:17,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:04:17,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:04:17,663 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:04:17,663 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:04:17,664 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-15.i [2023-11-29 01:04:20,373 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:04:20,619 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:04:20,620 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-15.i [2023-11-29 01:04:20,635 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/data/737647bf7/4a8cb703fe85446486a3b6a77091e6f8/FLAG4b81dee0f [2023-11-29 01:04:20,649 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/data/737647bf7/4a8cb703fe85446486a3b6a77091e6f8 [2023-11-29 01:04:20,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:04:20,653 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:04:20,655 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:04:20,655 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:04:20,660 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:04:20,660 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:04:20" (1/1) ... [2023-11-29 01:04:20,661 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@698e09a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:04:20, skipping insertion in model container [2023-11-29 01:04:20,662 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:04:20" (1/1) ... [2023-11-29 01:04:20,723 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:04:20,876 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_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-15.i[916,929] [2023-11-29 01:04:21,094 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:04:21,112 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:04:21,124 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_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-15.i[916,929] [2023-11-29 01:04:21,234 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:04:21,256 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:04:21,256 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:04:21 WrapperNode [2023-11-29 01:04:21,256 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:04:21,258 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:04:21,258 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:04:21,258 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:04:21,265 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:04:21" (1/1) ... [2023-11-29 01:04:21,292 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:04:21" (1/1) ... [2023-11-29 01:04:21,387 INFO L138 Inliner]: procedures = 26, calls = 105, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 800 [2023-11-29 01:04:21,387 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:04:21,388 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:04:21,388 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:04:21,388 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:04:21,400 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:04:21" (1/1) ... [2023-11-29 01:04:21,400 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:04:21" (1/1) ... [2023-11-29 01:04:21,418 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:04:21" (1/1) ... [2023-11-29 01:04:21,505 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-29 01:04:21,505 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:04:21" (1/1) ... [2023-11-29 01:04:21,505 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:04:21" (1/1) ... [2023-11-29 01:04:21,537 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:04:21" (1/1) ... [2023-11-29 01:04:21,557 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:04:21" (1/1) ... [2023-11-29 01:04:21,572 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:04:21" (1/1) ... [2023-11-29 01:04:21,583 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:04:21" (1/1) ... [2023-11-29 01:04:21,604 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:04:21,605 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:04:21,605 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:04:21,605 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:04:21,606 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:04:21" (1/1) ... [2023-11-29 01:04:21,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:04:21,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:04:21,635 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:04:21,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:04:21,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:04:21,668 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 01:04:21,668 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 01:04:21,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:04:21,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:04:21,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:04:21,816 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:04:21,818 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:04:22,924 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:04:22,997 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:04:22,997 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-29 01:04:22,998 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:04:22 BoogieIcfgContainer [2023-11-29 01:04:22,998 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:04:23,000 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:04:23,000 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:04:23,003 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:04:23,003 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:04:20" (1/3) ... [2023-11-29 01:04:23,004 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2680d0c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:04:23, skipping insertion in model container [2023-11-29 01:04:23,004 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:04:21" (2/3) ... [2023-11-29 01:04:23,005 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2680d0c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:04:23, skipping insertion in model container [2023-11-29 01:04:23,005 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:04:22" (3/3) ... [2023-11-29 01:04:23,006 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-15.i [2023-11-29 01:04:23,024 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:04:23,024 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 01:04:23,079 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:04:23,086 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;@3d70b39a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:04:23,086 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 01:04:23,092 INFO L276 IsEmpty]: Start isEmpty. Operand has 309 states, 214 states have (on average 1.560747663551402) internal successors, (334), 215 states have internal predecessors, (334), 92 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2023-11-29 01:04:23,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2023-11-29 01:04:23,130 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:04:23,132 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:23,132 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:04:23,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:23,138 INFO L85 PathProgramCache]: Analyzing trace with hash 659008048, now seen corresponding path program 1 times [2023-11-29 01:04:23,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:23,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838458791] [2023-11-29 01:04:23,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:23,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:23,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:23,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:23,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838458791] [2023-11-29 01:04:23,526 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 01:04:23,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178247085] [2023-11-29 01:04:23,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:23,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:23,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:04:23,532 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:04:23,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:04:23,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:24,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 1462 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 01:04:24,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:04:24,143 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 16562 trivial. 0 not checked. [2023-11-29 01:04:24,143 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:04:24,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178247085] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:04:24,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:04:24,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:04:24,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489041657] [2023-11-29 01:04:24,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:04:24,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 01:04:24,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:24,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 01:04:24,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:04:24,184 INFO L87 Difference]: Start difference. First operand has 309 states, 214 states have (on average 1.560747663551402) internal successors, (334), 215 states have internal predecessors, (334), 92 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) Second operand has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 2 states have call successors, (92), 2 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 2 states have call successors, (92) [2023-11-29 01:04:24,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:04:24,262 INFO L93 Difference]: Finished difference Result 615 states and 1126 transitions. [2023-11-29 01:04:24,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 01:04:24,265 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 2 states have call successors, (92), 2 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 2 states have call successors, (92) Word has length 605 [2023-11-29 01:04:24,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:04:24,276 INFO L225 Difference]: With dead ends: 615 [2023-11-29 01:04:24,277 INFO L226 Difference]: Without dead ends: 307 [2023-11-29 01:04:24,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 604 GetRequests, 604 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:04:24,286 INFO L413 NwaCegarLoop]: 510 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, 510 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:04:24,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 510 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:04:24,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2023-11-29 01:04:24,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 307. [2023-11-29 01:04:24,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 213 states have (on average 1.5446009389671362) internal successors, (329), 213 states have internal predecessors, (329), 92 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2023-11-29 01:04:24,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 513 transitions. [2023-11-29 01:04:24,373 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 513 transitions. Word has length 605 [2023-11-29 01:04:24,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:04:24,374 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 513 transitions. [2023-11-29 01:04:24,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 75.0) internal successors, (150), 2 states have internal predecessors, (150), 2 states have call successors, (92), 2 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 2 states have call successors, (92) [2023-11-29 01:04:24,374 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 513 transitions. [2023-11-29 01:04:24,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 606 [2023-11-29 01:04:24,394 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:04:24,395 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:24,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:04:24,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-29 01:04:24,596 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:04:24,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:24,597 INFO L85 PathProgramCache]: Analyzing trace with hash -225223292, now seen corresponding path program 1 times [2023-11-29 01:04:24,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:24,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279971348] [2023-11-29 01:04:24,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:24,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:24,726 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:04:24,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2008300874] [2023-11-29 01:04:24,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:24,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:24,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:04:24,728 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:04:24,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:04:25,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:25,206 INFO L262 TraceCheckSpWp]: Trace formula consists of 1462 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:04:25,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:04:25,308 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2023-11-29 01:04:25,308 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:04:25,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:25,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279971348] [2023-11-29 01:04:25,308 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:04:25,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008300874] [2023-11-29 01:04:25,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008300874] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:04:25,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:04:25,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:04:25,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374411597] [2023-11-29 01:04:25,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:04:25,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:04:25,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:25,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:04:25,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:04:25,314 INFO L87 Difference]: Start difference. First operand 307 states and 513 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-11-29 01:04:25,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:04:25,453 INFO L93 Difference]: Finished difference Result 917 states and 1533 transitions. [2023-11-29 01:04:25,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:04:25,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 605 [2023-11-29 01:04:25,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:04:25,463 INFO L225 Difference]: With dead ends: 917 [2023-11-29 01:04:25,463 INFO L226 Difference]: Without dead ends: 611 [2023-11-29 01:04:25,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 604 GetRequests, 603 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:04:25,466 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 496 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:04:25,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 1005 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:04:25,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2023-11-29 01:04:25,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 328. [2023-11-29 01:04:25,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 234 states have (on average 1.5555555555555556) internal successors, (364), 234 states have internal predecessors, (364), 92 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2023-11-29 01:04:25,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 548 transitions. [2023-11-29 01:04:25,548 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 548 transitions. Word has length 605 [2023-11-29 01:04:25,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:04:25,552 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 548 transitions. [2023-11-29 01:04:25,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-11-29 01:04:25,553 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 548 transitions. [2023-11-29 01:04:25,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2023-11-29 01:04:25,563 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:04:25,563 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:25,572 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:04:25,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:25,764 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:04:25,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:25,765 INFO L85 PathProgramCache]: Analyzing trace with hash 54482607, now seen corresponding path program 1 times [2023-11-29 01:04:25,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:25,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724659901] [2023-11-29 01:04:25,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:25,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:25,899 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:04:25,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2064636048] [2023-11-29 01:04:25,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:25,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:25,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:04:25,902 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:04:25,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:04:26,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:26,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 1465 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:04:26,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:04:26,442 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2023-11-29 01:04:26,442 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:04:26,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:26,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724659901] [2023-11-29 01:04:26,443 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:04:26,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064636048] [2023-11-29 01:04:26,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064636048] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:04:26,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:04:26,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:04:26,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472407918] [2023-11-29 01:04:26,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:04:26,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:04:26,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:26,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:04:26,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:04:26,447 INFO L87 Difference]: Start difference. First operand 328 states and 548 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-11-29 01:04:26,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:04:26,557 INFO L93 Difference]: Finished difference Result 978 states and 1634 transitions. [2023-11-29 01:04:26,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:04:26,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 606 [2023-11-29 01:04:26,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:04:26,566 INFO L225 Difference]: With dead ends: 978 [2023-11-29 01:04:26,566 INFO L226 Difference]: Without dead ends: 651 [2023-11-29 01:04:26,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 604 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:04:26,569 INFO L413 NwaCegarLoop]: 815 mSDtfsCounter, 462 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 1304 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:04:26,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 1304 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:04:26,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2023-11-29 01:04:26,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 647. [2023-11-29 01:04:26,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 460 states have (on average 1.5434782608695652) internal successors, (710), 460 states have internal predecessors, (710), 184 states have call successors, (184), 2 states have call predecessors, (184), 2 states have return successors, (184), 184 states have call predecessors, (184), 184 states have call successors, (184) [2023-11-29 01:04:26,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1078 transitions. [2023-11-29 01:04:26,661 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1078 transitions. Word has length 606 [2023-11-29 01:04:26,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:04:26,663 INFO L495 AbstractCegarLoop]: Abstraction has 647 states and 1078 transitions. [2023-11-29 01:04:26,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-11-29 01:04:26,664 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1078 transitions. [2023-11-29 01:04:26,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 607 [2023-11-29 01:04:26,670 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:04:26,671 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:26,679 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 01:04:26,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:26,871 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:04:26,872 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:26,872 INFO L85 PathProgramCache]: Analyzing trace with hash 81548209, now seen corresponding path program 1 times [2023-11-29 01:04:26,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:26,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750407486] [2023-11-29 01:04:26,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:26,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:26,972 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:04:26,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1193405387] [2023-11-29 01:04:26,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:26,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:26,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:04:26,974 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:04:26,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:04:27,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:27,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 1464 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:04:27,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:04:27,555 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2023-11-29 01:04:27,555 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:04:27,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:27,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750407486] [2023-11-29 01:04:27,555 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:04:27,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193405387] [2023-11-29 01:04:27,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193405387] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:04:27,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:04:27,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:04:27,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728170683] [2023-11-29 01:04:27,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:04:27,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:04:27,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:27,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:04:27,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:04:27,559 INFO L87 Difference]: Start difference. First operand 647 states and 1078 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-11-29 01:04:27,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:04:27,750 INFO L93 Difference]: Finished difference Result 1300 states and 2165 transitions. [2023-11-29 01:04:27,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:04:27,751 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 606 [2023-11-29 01:04:27,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:04:27,758 INFO L225 Difference]: With dead ends: 1300 [2023-11-29 01:04:27,758 INFO L226 Difference]: Without dead ends: 654 [2023-11-29 01:04:27,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 605 GetRequests, 604 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:04:27,762 INFO L413 NwaCegarLoop]: 691 mSDtfsCounter, 450 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:04:27,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 1184 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:04:27,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2023-11-29 01:04:27,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 650. [2023-11-29 01:04:27,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 463 states have (on average 1.5377969762419006) internal successors, (712), 463 states have internal predecessors, (712), 184 states have call successors, (184), 2 states have call predecessors, (184), 2 states have return successors, (184), 184 states have call predecessors, (184), 184 states have call successors, (184) [2023-11-29 01:04:27,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 1080 transitions. [2023-11-29 01:04:27,848 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 1080 transitions. Word has length 606 [2023-11-29 01:04:27,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:04:27,850 INFO L495 AbstractCegarLoop]: Abstraction has 650 states and 1080 transitions. [2023-11-29 01:04:27,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-11-29 01:04:27,851 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 1080 transitions. [2023-11-29 01:04:27,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2023-11-29 01:04:27,857 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:04:27,857 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:27,866 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 01:04:28,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:28,060 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:04:28,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:28,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1310053030, now seen corresponding path program 1 times [2023-11-29 01:04:28,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:28,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263295680] [2023-11-29 01:04:28,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:28,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:28,151 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:04:28,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1893130267] [2023-11-29 01:04:28,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:28,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:28,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:04:28,153 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:04:28,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:04:28,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:28,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 1468 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:04:28,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:04:28,666 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2023-11-29 01:04:28,666 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:04:28,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:28,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263295680] [2023-11-29 01:04:28,666 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:04:28,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893130267] [2023-11-29 01:04:28,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893130267] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:04:28,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:04:28,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:04:28,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28256817] [2023-11-29 01:04:28,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:04:28,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:04:28,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:28,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:04:28,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:04:28,670 INFO L87 Difference]: Start difference. First operand 650 states and 1080 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-11-29 01:04:28,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:04:28,786 INFO L93 Difference]: Finished difference Result 1573 states and 2594 transitions. [2023-11-29 01:04:28,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:04:28,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 607 [2023-11-29 01:04:28,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:04:28,793 INFO L225 Difference]: With dead ends: 1573 [2023-11-29 01:04:28,793 INFO L226 Difference]: Without dead ends: 924 [2023-11-29 01:04:28,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 606 GetRequests, 605 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:04:28,796 INFO L413 NwaCegarLoop]: 595 mSDtfsCounter, 210 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:04:28,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 1074 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:04:28,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2023-11-29 01:04:28,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 920. [2023-11-29 01:04:28,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920 states, 697 states have (on average 1.533715925394548) internal successors, (1069), 699 states have internal predecessors, (1069), 218 states have call successors, (218), 4 states have call predecessors, (218), 4 states have return successors, (218), 216 states have call predecessors, (218), 218 states have call successors, (218) [2023-11-29 01:04:28,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 1505 transitions. [2023-11-29 01:04:28,882 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 1505 transitions. Word has length 607 [2023-11-29 01:04:28,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:04:28,883 INFO L495 AbstractCegarLoop]: Abstraction has 920 states and 1505 transitions. [2023-11-29 01:04:28,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-11-29 01:04:28,883 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 1505 transitions. [2023-11-29 01:04:28,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 608 [2023-11-29 01:04:28,887 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:04:28,888 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:28,895 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 01:04:29,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:29,089 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:04:29,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:29,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1890254378, now seen corresponding path program 1 times [2023-11-29 01:04:29,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:29,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694823775] [2023-11-29 01:04:29,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:29,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:29,164 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:04:29,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1528532565] [2023-11-29 01:04:29,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:29,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:29,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:04:29,166 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:04:29,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:04:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:29,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 1470 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:04:29,603 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:04:30,133 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2023-11-29 01:04:30,133 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:04:30,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:30,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694823775] [2023-11-29 01:04:30,133 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:04:30,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528532565] [2023-11-29 01:04:30,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528532565] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:04:30,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:04:30,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:04:30,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714934948] [2023-11-29 01:04:30,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:04:30,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:04:30,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:30,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:04:30,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:04:30,137 INFO L87 Difference]: Start difference. First operand 920 states and 1505 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-11-29 01:04:30,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:04:30,269 INFO L93 Difference]: Finished difference Result 2758 states and 4513 transitions. [2023-11-29 01:04:30,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:04:30,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 607 [2023-11-29 01:04:30,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:04:30,283 INFO L225 Difference]: With dead ends: 2758 [2023-11-29 01:04:30,283 INFO L226 Difference]: Without dead ends: 1839 [2023-11-29 01:04:30,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 606 GetRequests, 605 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:04:30,286 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 259 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:04:30,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 997 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:04:30,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1839 states. [2023-11-29 01:04:30,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1839 to 1837. [2023-11-29 01:04:30,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1837 states, 1392 states have (on average 1.5258620689655173) internal successors, (2124), 1396 states have internal predecessors, (2124), 436 states have call successors, (436), 8 states have call predecessors, (436), 8 states have return successors, (436), 432 states have call predecessors, (436), 436 states have call successors, (436) [2023-11-29 01:04:30,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1837 states to 1837 states and 2996 transitions. [2023-11-29 01:04:30,543 INFO L78 Accepts]: Start accepts. Automaton has 1837 states and 2996 transitions. Word has length 607 [2023-11-29 01:04:30,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:04:30,544 INFO L495 AbstractCegarLoop]: Abstraction has 1837 states and 2996 transitions. [2023-11-29 01:04:30,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 2 states have internal predecessors, (150), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-11-29 01:04:30,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1837 states and 2996 transitions. [2023-11-29 01:04:30,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2023-11-29 01:04:30,552 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:04:30,552 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:30,561 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 01:04:30,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-29 01:04:30,753 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:04:30,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:30,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1417829837, now seen corresponding path program 1 times [2023-11-29 01:04:30,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:30,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324575275] [2023-11-29 01:04:30,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:30,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:30,836 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:04:30,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1981752958] [2023-11-29 01:04:30,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:30,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:30,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:04:30,838 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:04:30,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 01:04:31,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:31,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 1472 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:04:31,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:04:32,690 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2023-11-29 01:04:32,690 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:04:32,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:32,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324575275] [2023-11-29 01:04:32,690 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:04:32,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981752958] [2023-11-29 01:04:32,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981752958] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:04:32,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:04:32,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:04:32,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724725347] [2023-11-29 01:04:32,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:04:32,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:04:32,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:32,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:04:32,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:04:32,694 INFO L87 Difference]: Start difference. First operand 1837 states and 2996 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-11-29 01:04:33,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:04:33,210 INFO L93 Difference]: Finished difference Result 5311 states and 8651 transitions. [2023-11-29 01:04:33,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:04:33,211 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 608 [2023-11-29 01:04:33,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:04:33,229 INFO L225 Difference]: With dead ends: 5311 [2023-11-29 01:04:33,229 INFO L226 Difference]: Without dead ends: 3475 [2023-11-29 01:04:33,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 608 GetRequests, 604 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 01:04:33,235 INFO L413 NwaCegarLoop]: 577 mSDtfsCounter, 1158 mSDsluCounter, 1300 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 1877 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:04:33,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1158 Valid, 1877 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:04:33,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3475 states. [2023-11-29 01:04:33,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3475 to 2697. [2023-11-29 01:04:33,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2697 states, 2030 states have (on average 1.51871921182266) internal successors, (3083), 2036 states have internal predecessors, (3083), 654 states have call successors, (654), 12 states have call predecessors, (654), 12 states have return successors, (654), 648 states have call predecessors, (654), 654 states have call successors, (654) [2023-11-29 01:04:33,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2697 states to 2697 states and 4391 transitions. [2023-11-29 01:04:33,522 INFO L78 Accepts]: Start accepts. Automaton has 2697 states and 4391 transitions. Word has length 608 [2023-11-29 01:04:33,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:04:33,523 INFO L495 AbstractCegarLoop]: Abstraction has 2697 states and 4391 transitions. [2023-11-29 01:04:33,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-11-29 01:04:33,523 INFO L276 IsEmpty]: Start isEmpty. Operand 2697 states and 4391 transitions. [2023-11-29 01:04:33,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2023-11-29 01:04:33,528 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:04:33,528 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:33,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-29 01:04:33,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:33,729 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:04:33,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:33,730 INFO L85 PathProgramCache]: Analyzing trace with hash 194620957, now seen corresponding path program 1 times [2023-11-29 01:04:33,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:33,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356428940] [2023-11-29 01:04:33,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:33,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:33,822 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:04:33,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [652154662] [2023-11-29 01:04:33,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:33,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:33,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:04:33,824 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:04:33,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 01:04:34,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:34,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 1471 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:04:34,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:04:34,341 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2023-11-29 01:04:34,341 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:04:34,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:34,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356428940] [2023-11-29 01:04:34,341 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:04:34,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652154662] [2023-11-29 01:04:34,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652154662] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:04:34,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:04:34,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:04:34,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499635805] [2023-11-29 01:04:34,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:04:34,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:04:34,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:34,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:04:34,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:04:34,345 INFO L87 Difference]: Start difference. First operand 2697 states and 4391 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-11-29 01:04:34,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:04:34,811 INFO L93 Difference]: Finished difference Result 7559 states and 12255 transitions. [2023-11-29 01:04:34,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:04:34,812 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 608 [2023-11-29 01:04:34,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:04:34,844 INFO L225 Difference]: With dead ends: 7559 [2023-11-29 01:04:34,844 INFO L226 Difference]: Without dead ends: 4863 [2023-11-29 01:04:34,854 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 609 GetRequests, 606 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 01:04:34,854 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 922 mSDsluCounter, 1030 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:04:34,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 1606 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:04:34,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4863 states. [2023-11-29 01:04:35,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4863 to 3373. [2023-11-29 01:04:35,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3373 states, 2706 states have (on average 1.5458240946045825) internal successors, (4183), 2712 states have internal predecessors, (4183), 654 states have call successors, (654), 12 states have call predecessors, (654), 12 states have return successors, (654), 648 states have call predecessors, (654), 654 states have call successors, (654) [2023-11-29 01:04:35,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3373 states to 3373 states and 5491 transitions. [2023-11-29 01:04:35,252 INFO L78 Accepts]: Start accepts. Automaton has 3373 states and 5491 transitions. Word has length 608 [2023-11-29 01:04:35,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:04:35,253 INFO L495 AbstractCegarLoop]: Abstraction has 3373 states and 5491 transitions. [2023-11-29 01:04:35,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-11-29 01:04:35,253 INFO L276 IsEmpty]: Start isEmpty. Operand 3373 states and 5491 transitions. [2023-11-29 01:04:35,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2023-11-29 01:04:35,262 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:04:35,262 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:35,270 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 01:04:35,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:35,471 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:04:35,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:35,471 INFO L85 PathProgramCache]: Analyzing trace with hash 102601883, now seen corresponding path program 1 times [2023-11-29 01:04:35,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:35,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317360800] [2023-11-29 01:04:35,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:35,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:35,541 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:04:35,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [132119748] [2023-11-29 01:04:35,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:35,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:35,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:04:35,542 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:04:35,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 01:04:35,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:35,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 1474 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:04:35,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:04:35,989 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2023-11-29 01:04:35,989 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:04:35,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:35,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317360800] [2023-11-29 01:04:35,990 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:04:35,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132119748] [2023-11-29 01:04:35,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132119748] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:04:35,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:04:35,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:04:35,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574750100] [2023-11-29 01:04:35,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:04:35,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:04:35,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:35,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:04:35,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:04:35,993 INFO L87 Difference]: Start difference. First operand 3373 states and 5491 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-11-29 01:04:36,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:04:36,280 INFO L93 Difference]: Finished difference Result 7415 states and 12020 transitions. [2023-11-29 01:04:36,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:04:36,281 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 608 [2023-11-29 01:04:36,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:04:36,302 INFO L225 Difference]: With dead ends: 7415 [2023-11-29 01:04:36,302 INFO L226 Difference]: Without dead ends: 4043 [2023-11-29 01:04:36,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 607 GetRequests, 605 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 01:04:36,309 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 507 mSDsluCounter, 1138 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 1730 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:04:36,309 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 1730 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:04:36,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4043 states. [2023-11-29 01:04:36,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4043 to 2896. [2023-11-29 01:04:36,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2896 states, 2280 states have (on average 1.5403508771929824) internal successors, (3512), 2283 states have internal predecessors, (3512), 603 states have call successors, (603), 12 states have call predecessors, (603), 12 states have return successors, (603), 600 states have call predecessors, (603), 603 states have call successors, (603) [2023-11-29 01:04:36,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2896 states to 2896 states and 4718 transitions. [2023-11-29 01:04:36,633 INFO L78 Accepts]: Start accepts. Automaton has 2896 states and 4718 transitions. Word has length 608 [2023-11-29 01:04:36,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:04:36,634 INFO L495 AbstractCegarLoop]: Abstraction has 2896 states and 4718 transitions. [2023-11-29 01:04:36,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-11-29 01:04:36,635 INFO L276 IsEmpty]: Start isEmpty. Operand 2896 states and 4718 transitions. [2023-11-29 01:04:36,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 609 [2023-11-29 01:04:36,643 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:04:36,643 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:36,652 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 01:04:36,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:36,844 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:04:36,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:36,844 INFO L85 PathProgramCache]: Analyzing trace with hash -955236195, now seen corresponding path program 1 times [2023-11-29 01:04:36,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:36,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849777480] [2023-11-29 01:04:36,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:36,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:36,919 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:04:36,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [885109479] [2023-11-29 01:04:36,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:36,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:36,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:04:36,920 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:04:36,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 01:04:37,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:37,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 1477 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:04:37,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:04:37,893 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 5157 proven. 222 refuted. 0 times theorem prover too weak. 11365 trivial. 0 not checked. [2023-11-29 01:04:37,893 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:04:38,346 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 51 proven. 222 refuted. 0 times theorem prover too weak. 16471 trivial. 0 not checked. [2023-11-29 01:04:38,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:38,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849777480] [2023-11-29 01:04:38,346 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:04:38,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885109479] [2023-11-29 01:04:38,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885109479] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:04:38,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:04:38,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 01:04:38,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264832501] [2023-11-29 01:04:38,347 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:04:38,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:04:38,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:38,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:04:38,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:04:38,351 INFO L87 Difference]: Start difference. First operand 2896 states and 4718 transitions. Second operand has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 2 states have call successors, (166), 2 states have call predecessors, (166), 4 states have return successors, (167), 2 states have call predecessors, (167), 2 states have call successors, (167) [2023-11-29 01:04:38,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:04:38,915 INFO L93 Difference]: Finished difference Result 4612 states and 7487 transitions. [2023-11-29 01:04:38,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:04:38,916 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 2 states have call successors, (166), 2 states have call predecessors, (166), 4 states have return successors, (167), 2 states have call predecessors, (167), 2 states have call successors, (167) Word has length 608 [2023-11-29 01:04:38,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:04:38,929 INFO L225 Difference]: With dead ends: 4612 [2023-11-29 01:04:38,929 INFO L226 Difference]: Without dead ends: 1717 [2023-11-29 01:04:38,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1218 GetRequests, 1208 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 01:04:38,935 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 551 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:04:38,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [568 Valid, 1002 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:04:38,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1717 states. [2023-11-29 01:04:39,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1717 to 1508. [2023-11-29 01:04:39,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1508 states, 1032 states have (on average 1.4631782945736433) internal successors, (1510), 1032 states have internal predecessors, (1510), 460 states have call successors, (460), 15 states have call predecessors, (460), 15 states have return successors, (460), 460 states have call predecessors, (460), 460 states have call successors, (460) [2023-11-29 01:04:39,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1508 states to 1508 states and 2430 transitions. [2023-11-29 01:04:39,171 INFO L78 Accepts]: Start accepts. Automaton has 1508 states and 2430 transitions. Word has length 608 [2023-11-29 01:04:39,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:04:39,173 INFO L495 AbstractCegarLoop]: Abstraction has 1508 states and 2430 transitions. [2023-11-29 01:04:39,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.857142857142858) internal successors, (160), 7 states have internal predecessors, (160), 2 states have call successors, (166), 2 states have call predecessors, (166), 4 states have return successors, (167), 2 states have call predecessors, (167), 2 states have call successors, (167) [2023-11-29 01:04:39,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1508 states and 2430 transitions. [2023-11-29 01:04:39,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2023-11-29 01:04:39,185 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:04:39,185 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:39,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 01:04:39,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:39,386 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:04:39,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:39,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1557557108, now seen corresponding path program 1 times [2023-11-29 01:04:39,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:39,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365649113] [2023-11-29 01:04:39,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:39,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:39,459 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:04:39,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [990885285] [2023-11-29 01:04:39,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:39,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:39,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:04:39,461 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:04:39,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 01:04:39,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:39,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 1464 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:04:39,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:04:39,907 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2023-11-29 01:04:39,907 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:04:39,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:39,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365649113] [2023-11-29 01:04:39,907 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:04:39,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [990885285] [2023-11-29 01:04:39,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [990885285] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:04:39,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:04:39,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:04:39,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523190691] [2023-11-29 01:04:39,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:04:39,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:04:39,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:39,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:04:39,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:04:39,911 INFO L87 Difference]: Start difference. First operand 1508 states and 2430 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-11-29 01:04:40,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:04:40,566 INFO L93 Difference]: Finished difference Result 4052 states and 6497 transitions. [2023-11-29 01:04:40,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:04:40,567 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 609 [2023-11-29 01:04:40,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:04:40,581 INFO L225 Difference]: With dead ends: 4052 [2023-11-29 01:04:40,581 INFO L226 Difference]: Without dead ends: 2732 [2023-11-29 01:04:40,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 607 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 01:04:40,584 INFO L413 NwaCegarLoop]: 816 mSDtfsCounter, 883 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:04:40,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [883 Valid, 1476 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:04:40,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2732 states. [2023-11-29 01:04:40,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2732 to 1548. [2023-11-29 01:04:40,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1548 states, 1067 states have (on average 1.4517338331771321) internal successors, (1549), 1067 states have internal predecessors, (1549), 460 states have call successors, (460), 20 states have call predecessors, (460), 20 states have return successors, (460), 460 states have call predecessors, (460), 460 states have call successors, (460) [2023-11-29 01:04:40,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1548 states to 1548 states and 2469 transitions. [2023-11-29 01:04:40,765 INFO L78 Accepts]: Start accepts. Automaton has 1548 states and 2469 transitions. Word has length 609 [2023-11-29 01:04:40,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:04:40,766 INFO L495 AbstractCegarLoop]: Abstraction has 1548 states and 2469 transitions. [2023-11-29 01:04:40,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-11-29 01:04:40,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1548 states and 2469 transitions. [2023-11-29 01:04:40,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2023-11-29 01:04:40,773 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:04:40,773 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:40,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 01:04:40,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:40,974 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:04:40,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:40,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1763897769, now seen corresponding path program 1 times [2023-11-29 01:04:40,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:40,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407458994] [2023-11-29 01:04:40,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:40,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:41,069 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:04:41,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [63333161] [2023-11-29 01:04:41,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:41,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:41,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:04:41,070 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:04:41,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 01:04:41,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:41,478 INFO L262 TraceCheckSpWp]: Trace formula consists of 1465 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:04:41,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:04:41,932 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 7057 proven. 192 refuted. 0 times theorem prover too weak. 9495 trivial. 0 not checked. [2023-11-29 01:04:41,932 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:04:42,289 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 81 proven. 192 refuted. 0 times theorem prover too weak. 16471 trivial. 0 not checked. [2023-11-29 01:04:42,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:42,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407458994] [2023-11-29 01:04:42,289 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:04:42,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63333161] [2023-11-29 01:04:42,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63333161] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:04:42,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:04:42,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-29 01:04:42,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638709510] [2023-11-29 01:04:42,290 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:04:42,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:04:42,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:42,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:04:42,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:04:42,292 INFO L87 Difference]: Start difference. First operand 1548 states and 2469 transitions. Second operand has 8 states, 8 states have (on average 33.625) internal successors, (269), 8 states have internal predecessors, (269), 3 states have call successors, (156), 2 states have call predecessors, (156), 4 states have return successors, (157), 3 states have call predecessors, (157), 3 states have call successors, (157) [2023-11-29 01:04:42,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:04:42,770 INFO L93 Difference]: Finished difference Result 2954 states and 4679 transitions. [2023-11-29 01:04:42,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:04:42,771 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 33.625) internal successors, (269), 8 states have internal predecessors, (269), 3 states have call successors, (156), 2 states have call predecessors, (156), 4 states have return successors, (157), 3 states have call predecessors, (157), 3 states have call successors, (157) Word has length 609 [2023-11-29 01:04:42,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:04:42,783 INFO L225 Difference]: With dead ends: 2954 [2023-11-29 01:04:42,784 INFO L226 Difference]: Without dead ends: 1598 [2023-11-29 01:04:42,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1220 GetRequests, 1210 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 01:04:42,788 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 451 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:04:42,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 1009 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:04:42,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2023-11-29 01:04:42,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1568. [2023-11-29 01:04:42,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1568 states, 1082 states have (on average 1.4380776340110906) internal successors, (1556), 1082 states have internal predecessors, (1556), 460 states have call successors, (460), 25 states have call predecessors, (460), 25 states have return successors, (460), 460 states have call predecessors, (460), 460 states have call successors, (460) [2023-11-29 01:04:42,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1568 states to 1568 states and 2476 transitions. [2023-11-29 01:04:42,944 INFO L78 Accepts]: Start accepts. Automaton has 1568 states and 2476 transitions. Word has length 609 [2023-11-29 01:04:42,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:04:42,946 INFO L495 AbstractCegarLoop]: Abstraction has 1568 states and 2476 transitions. [2023-11-29 01:04:42,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 33.625) internal successors, (269), 8 states have internal predecessors, (269), 3 states have call successors, (156), 2 states have call predecessors, (156), 4 states have return successors, (157), 3 states have call predecessors, (157), 3 states have call successors, (157) [2023-11-29 01:04:42,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1568 states and 2476 transitions. [2023-11-29 01:04:42,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2023-11-29 01:04:42,951 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:04:42,952 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:42,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 01:04:43,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:43,153 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:04:43,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:43,153 INFO L85 PathProgramCache]: Analyzing trace with hash 560108801, now seen corresponding path program 1 times [2023-11-29 01:04:43,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:43,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039436774] [2023-11-29 01:04:43,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:43,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:43,213 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:04:43,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [917465556] [2023-11-29 01:04:43,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:43,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:43,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:04:43,229 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:04:43,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 01:04:43,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:43,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 1466 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:04:43,631 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:04:43,881 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 8191 proven. 111 refuted. 0 times theorem prover too weak. 8442 trivial. 0 not checked. [2023-11-29 01:04:43,881 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:04:44,223 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 162 proven. 111 refuted. 0 times theorem prover too weak. 16471 trivial. 0 not checked. [2023-11-29 01:04:44,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:44,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039436774] [2023-11-29 01:04:44,223 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:04:44,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917465556] [2023-11-29 01:04:44,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917465556] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:04:44,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:04:44,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 01:04:44,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093534659] [2023-11-29 01:04:44,224 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:04:44,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:04:44,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:44,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:04:44,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:04:44,227 INFO L87 Difference]: Start difference. First operand 1568 states and 2476 transitions. Second operand has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 2 states have call successors, (129), 2 states have call predecessors, (129), 4 states have return successors, (130), 2 states have call predecessors, (130), 2 states have call successors, (130) [2023-11-29 01:04:44,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:04:44,744 INFO L93 Difference]: Finished difference Result 3022 states and 4736 transitions. [2023-11-29 01:04:44,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:04:44,744 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 2 states have call successors, (129), 2 states have call predecessors, (129), 4 states have return successors, (130), 2 states have call predecessors, (130), 2 states have call successors, (130) Word has length 610 [2023-11-29 01:04:44,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:04:44,750 INFO L225 Difference]: With dead ends: 3022 [2023-11-29 01:04:44,750 INFO L226 Difference]: Without dead ends: 1628 [2023-11-29 01:04:44,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1222 GetRequests, 1212 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:04:44,754 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 353 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:04:44,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 1017 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:04:44,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1628 states. [2023-11-29 01:04:44,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1628 to 1588. [2023-11-29 01:04:44,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1588 states, 1097 states have (on average 1.423883318140383) internal successors, (1562), 1097 states have internal predecessors, (1562), 460 states have call successors, (460), 30 states have call predecessors, (460), 30 states have return successors, (460), 460 states have call predecessors, (460), 460 states have call successors, (460) [2023-11-29 01:04:44,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 2482 transitions. [2023-11-29 01:04:44,919 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 2482 transitions. Word has length 610 [2023-11-29 01:04:44,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:04:44,920 INFO L495 AbstractCegarLoop]: Abstraction has 1588 states and 2482 transitions. [2023-11-29 01:04:44,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 2 states have call successors, (129), 2 states have call predecessors, (129), 4 states have return successors, (130), 2 states have call predecessors, (130), 2 states have call successors, (130) [2023-11-29 01:04:44,920 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 2482 transitions. [2023-11-29 01:04:44,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2023-11-29 01:04:44,927 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:04:44,927 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:44,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-29 01:04:45,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 01:04:45,128 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:04:45,128 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:45,128 INFO L85 PathProgramCache]: Analyzing trace with hash -989248575, now seen corresponding path program 1 times [2023-11-29 01:04:45,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:45,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063112362] [2023-11-29 01:04:45,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:45,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:45,190 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:04:45,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [992648072] [2023-11-29 01:04:45,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:45,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:45,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:04:45,192 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:04:45,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 01:04:45,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:45,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 1468 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:04:45,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:04:46,003 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 8307 proven. 117 refuted. 0 times theorem prover too weak. 8320 trivial. 0 not checked. [2023-11-29 01:04:46,004 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:04:46,293 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 156 proven. 117 refuted. 0 times theorem prover too weak. 16471 trivial. 0 not checked. [2023-11-29 01:04:46,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:46,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063112362] [2023-11-29 01:04:46,293 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:04:46,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992648072] [2023-11-29 01:04:46,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992648072] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:04:46,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:04:46,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 01:04:46,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390775209] [2023-11-29 01:04:46,294 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:04:46,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:04:46,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:46,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:04:46,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:04:46,297 INFO L87 Difference]: Start difference. First operand 1588 states and 2482 transitions. Second operand has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 2 states have call successors, (131), 2 states have call predecessors, (131), 4 states have return successors, (132), 2 states have call predecessors, (132), 2 states have call successors, (132) [2023-11-29 01:04:46,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:04:46,828 INFO L93 Difference]: Finished difference Result 3026 states and 4684 transitions. [2023-11-29 01:04:46,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:04:46,829 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 2 states have call successors, (131), 2 states have call predecessors, (131), 4 states have return successors, (132), 2 states have call predecessors, (132), 2 states have call successors, (132) Word has length 610 [2023-11-29 01:04:46,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:04:46,836 INFO L225 Difference]: With dead ends: 3026 [2023-11-29 01:04:46,836 INFO L226 Difference]: Without dead ends: 1638 [2023-11-29 01:04:46,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1222 GetRequests, 1212 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 01:04:46,840 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 319 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:04:46,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 1007 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:04:46,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1638 states. [2023-11-29 01:04:46,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1638 to 1588. [2023-11-29 01:04:46,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1588 states, 1092 states have (on average 1.4075091575091576) internal successors, (1537), 1092 states have internal predecessors, (1537), 460 states have call successors, (460), 35 states have call predecessors, (460), 35 states have return successors, (460), 460 states have call predecessors, (460), 460 states have call successors, (460) [2023-11-29 01:04:46,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 2457 transitions. [2023-11-29 01:04:46,964 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 2457 transitions. Word has length 610 [2023-11-29 01:04:46,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:04:46,965 INFO L495 AbstractCegarLoop]: Abstraction has 1588 states and 2457 transitions. [2023-11-29 01:04:46,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 2 states have call successors, (131), 2 states have call predecessors, (131), 4 states have return successors, (132), 2 states have call predecessors, (132), 2 states have call successors, (132) [2023-11-29 01:04:46,965 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 2457 transitions. [2023-11-29 01:04:46,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2023-11-29 01:04:46,969 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:04:46,969 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:46,977 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 01:04:47,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:47,170 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:04:47,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:47,170 INFO L85 PathProgramCache]: Analyzing trace with hash -2091288384, now seen corresponding path program 1 times [2023-11-29 01:04:47,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:47,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663536042] [2023-11-29 01:04:47,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:47,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:47,240 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:04:47,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [664285199] [2023-11-29 01:04:47,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:47,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:47,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:04:47,241 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:04:47,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 01:04:47,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:47,709 INFO L262 TraceCheckSpWp]: Trace formula consists of 1468 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 01:04:47,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:04:47,854 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2023-11-29 01:04:47,854 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:04:47,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:47,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663536042] [2023-11-29 01:04:47,854 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:04:47,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664285199] [2023-11-29 01:04:47,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664285199] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:04:47,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:04:47,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:04:47,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103140313] [2023-11-29 01:04:47,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:04:47,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:04:47,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:47,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:04:47,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:04:47,857 INFO L87 Difference]: Start difference. First operand 1588 states and 2457 transitions. Second operand has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-11-29 01:04:48,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:04:48,963 INFO L93 Difference]: Finished difference Result 4278 states and 6619 transitions. [2023-11-29 01:04:48,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:04:48,963 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 610 [2023-11-29 01:04:48,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:04:48,971 INFO L225 Difference]: With dead ends: 4278 [2023-11-29 01:04:48,971 INFO L226 Difference]: Without dead ends: 2894 [2023-11-29 01:04:48,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 613 GetRequests, 606 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:04:48,975 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 1859 mSDsluCounter, 1466 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1859 SdHoareTripleChecker+Valid, 1952 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:04:48,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1859 Valid, 1952 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 01:04:48,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2894 states. [2023-11-29 01:04:49,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2894 to 1592. [2023-11-29 01:04:49,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1592 states, 1096 states have (on average 1.4005474452554745) internal successors, (1535), 1096 states have internal predecessors, (1535), 460 states have call successors, (460), 35 states have call predecessors, (460), 35 states have return successors, (460), 460 states have call predecessors, (460), 460 states have call successors, (460) [2023-11-29 01:04:49,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1592 states to 1592 states and 2455 transitions. [2023-11-29 01:04:49,173 INFO L78 Accepts]: Start accepts. Automaton has 1592 states and 2455 transitions. Word has length 610 [2023-11-29 01:04:49,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:04:49,174 INFO L495 AbstractCegarLoop]: Abstraction has 1592 states and 2455 transitions. [2023-11-29 01:04:49,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.5) internal successors, (153), 6 states have internal predecessors, (153), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-11-29 01:04:49,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1592 states and 2455 transitions. [2023-11-29 01:04:49,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2023-11-29 01:04:49,180 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:04:49,181 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:49,188 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 01:04:49,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:49,381 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:04:49,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:49,382 INFO L85 PathProgramCache]: Analyzing trace with hash -704502974, now seen corresponding path program 1 times [2023-11-29 01:04:49,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:49,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723099415] [2023-11-29 01:04:49,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:49,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:49,443 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:04:49,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1667696539] [2023-11-29 01:04:49,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:49,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:49,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:04:49,445 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:04:49,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 01:04:49,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:49,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 1469 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 01:04:49,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:04:50,755 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 10985 proven. 252 refuted. 0 times theorem prover too weak. 5507 trivial. 0 not checked. [2023-11-29 01:04:50,755 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:04:51,298 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 288 proven. 255 refuted. 0 times theorem prover too weak. 16201 trivial. 0 not checked. [2023-11-29 01:04:51,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:51,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723099415] [2023-11-29 01:04:51,299 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:04:51,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667696539] [2023-11-29 01:04:51,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667696539] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:04:51,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:04:51,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2023-11-29 01:04:51,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410421387] [2023-11-29 01:04:51,300 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:04:51,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 01:04:51,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:51,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 01:04:51,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:04:51,302 INFO L87 Difference]: Start difference. First operand 1592 states and 2455 transitions. Second operand has 17 states, 17 states have (on average 14.0) internal successors, (238), 17 states have internal predecessors, (238), 4 states have call successors, (146), 3 states have call predecessors, (146), 7 states have return successors, (147), 4 states have call predecessors, (147), 4 states have call successors, (147) [2023-11-29 01:04:52,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:04:52,972 INFO L93 Difference]: Finished difference Result 3100 states and 4703 transitions. [2023-11-29 01:04:52,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 01:04:52,972 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 14.0) internal successors, (238), 17 states have internal predecessors, (238), 4 states have call successors, (146), 3 states have call predecessors, (146), 7 states have return successors, (147), 4 states have call predecessors, (147), 4 states have call successors, (147) Word has length 610 [2023-11-29 01:04:52,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:04:52,978 INFO L225 Difference]: With dead ends: 3100 [2023-11-29 01:04:52,978 INFO L226 Difference]: Without dead ends: 1712 [2023-11-29 01:04:52,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1238 GetRequests, 1204 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=307, Invalid=883, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 01:04:52,982 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 1472 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 1204 mSolverCounterSat, 923 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 2127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 923 IncrementalHoareTripleChecker+Valid, 1204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:04:52,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 1610 Invalid, 2127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [923 Valid, 1204 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 01:04:52,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1712 states. [2023-11-29 01:04:53,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1712 to 1652. [2023-11-29 01:04:53,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1652 states, 1141 states have (on average 1.3777388255915863) internal successors, (1572), 1141 states have internal predecessors, (1572), 460 states have call successors, (460), 50 states have call predecessors, (460), 50 states have return successors, (460), 460 states have call predecessors, (460), 460 states have call successors, (460) [2023-11-29 01:04:53,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1652 states to 1652 states and 2492 transitions. [2023-11-29 01:04:53,215 INFO L78 Accepts]: Start accepts. Automaton has 1652 states and 2492 transitions. Word has length 610 [2023-11-29 01:04:53,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:04:53,216 INFO L495 AbstractCegarLoop]: Abstraction has 1652 states and 2492 transitions. [2023-11-29 01:04:53,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 14.0) internal successors, (238), 17 states have internal predecessors, (238), 4 states have call successors, (146), 3 states have call predecessors, (146), 7 states have return successors, (147), 4 states have call predecessors, (147), 4 states have call successors, (147) [2023-11-29 01:04:53,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1652 states and 2492 transitions. [2023-11-29 01:04:53,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2023-11-29 01:04:53,222 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:04:53,223 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:04:53,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-29 01:04:53,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 01:04:53,423 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:04:53,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:04:53,424 INFO L85 PathProgramCache]: Analyzing trace with hash -583605851, now seen corresponding path program 1 times [2023-11-29 01:04:53,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:04:53,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400468941] [2023-11-29 01:04:53,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:53,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:04:53,501 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:04:53,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1135866261] [2023-11-29 01:04:53,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:04:53,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:04:53,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:04:53,503 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:04:53,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 01:04:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:04:54,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 1470 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 01:04:54,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:04:55,959 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 11629 proven. 420 refuted. 0 times theorem prover too weak. 4695 trivial. 0 not checked. [2023-11-29 01:04:55,959 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:04:58,936 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 636 proven. 438 refuted. 0 times theorem prover too weak. 15670 trivial. 0 not checked. [2023-11-29 01:04:58,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:04:58,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400468941] [2023-11-29 01:04:58,955 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:04:58,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135866261] [2023-11-29 01:04:58,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135866261] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:04:58,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:04:58,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2023-11-29 01:04:58,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189838188] [2023-11-29 01:04:58,956 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:04:58,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-29 01:04:58,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:04:58,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-29 01:04:58,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=744, Unknown=0, NotChecked=0, Total=992 [2023-11-29 01:04:58,959 INFO L87 Difference]: Start difference. First operand 1652 states and 2492 transitions. Second operand has 32 states, 31 states have (on average 9.548387096774194) internal successors, (296), 30 states have internal predecessors, (296), 9 states have call successors, (146), 5 states have call predecessors, (146), 12 states have return successors, (147), 9 states have call predecessors, (147), 9 states have call successors, (147) [2023-11-29 01:05:02,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:05:02,684 INFO L93 Difference]: Finished difference Result 4526 states and 6732 transitions. [2023-11-29 01:05:02,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-11-29 01:05:02,685 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 9.548387096774194) internal successors, (296), 30 states have internal predecessors, (296), 9 states have call successors, (146), 5 states have call predecessors, (146), 12 states have return successors, (147), 9 states have call predecessors, (147), 9 states have call successors, (147) Word has length 611 [2023-11-29 01:05:02,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:05:02,691 INFO L225 Difference]: With dead ends: 4526 [2023-11-29 01:05:02,691 INFO L226 Difference]: Without dead ends: 3090 [2023-11-29 01:05:02,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1251 GetRequests, 1193 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 790 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1073, Invalid=2467, Unknown=0, NotChecked=0, Total=3540 [2023-11-29 01:05:02,695 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 3541 mSDsluCounter, 1948 mSDsCounter, 0 mSdLazyCounter, 2288 mSolverCounterSat, 1205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3541 SdHoareTripleChecker+Valid, 2379 SdHoareTripleChecker+Invalid, 3493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1205 IncrementalHoareTripleChecker+Valid, 2288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:05:02,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3541 Valid, 2379 Invalid, 3493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1205 Valid, 2288 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-29 01:05:02,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3090 states. [2023-11-29 01:05:02,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3090 to 2188. [2023-11-29 01:05:02,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2188 states, 1662 states have (on average 1.4121540312876053) internal successors, (2347), 1662 states have internal predecessors, (2347), 460 states have call successors, (460), 65 states have call predecessors, (460), 65 states have return successors, (460), 460 states have call predecessors, (460), 460 states have call successors, (460) [2023-11-29 01:05:02,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2188 states to 2188 states and 3267 transitions. [2023-11-29 01:05:02,918 INFO L78 Accepts]: Start accepts. Automaton has 2188 states and 3267 transitions. Word has length 611 [2023-11-29 01:05:02,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:05:02,919 INFO L495 AbstractCegarLoop]: Abstraction has 2188 states and 3267 transitions. [2023-11-29 01:05:02,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 9.548387096774194) internal successors, (296), 30 states have internal predecessors, (296), 9 states have call successors, (146), 5 states have call predecessors, (146), 12 states have return successors, (147), 9 states have call predecessors, (147), 9 states have call successors, (147) [2023-11-29 01:05:02,919 INFO L276 IsEmpty]: Start isEmpty. Operand 2188 states and 3267 transitions. [2023-11-29 01:05:02,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2023-11-29 01:05:02,923 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:05:02,923 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:05:02,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 01:05:03,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 01:05:03,124 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:05:03,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:03,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1401254301, now seen corresponding path program 1 times [2023-11-29 01:05:03,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:03,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651191347] [2023-11-29 01:05:03,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:03,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:03,204 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:05:03,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1686441808] [2023-11-29 01:05:03,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:03,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:05:03,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:05:03,206 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:05:03,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 01:05:04,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:04,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 1470 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 01:05:04,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:05:05,317 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16744 trivial. 0 not checked. [2023-11-29 01:05:05,318 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:05:05,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:05,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651191347] [2023-11-29 01:05:05,318 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:05:05,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686441808] [2023-11-29 01:05:05,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686441808] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:05:05,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:05:05,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:05:05,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285688341] [2023-11-29 01:05:05,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:05:05,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:05:05,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:05,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:05:05,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:05:05,321 INFO L87 Difference]: Start difference. First operand 2188 states and 3267 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-11-29 01:05:05,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:05:05,909 INFO L93 Difference]: Finished difference Result 5246 states and 7895 transitions. [2023-11-29 01:05:05,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:05:05,909 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) Word has length 611 [2023-11-29 01:05:05,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:05:05,916 INFO L225 Difference]: With dead ends: 5246 [2023-11-29 01:05:05,916 INFO L226 Difference]: Without dead ends: 3258 [2023-11-29 01:05:05,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 611 GetRequests, 608 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 01:05:05,919 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 420 mSDsluCounter, 982 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 1475 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:05:05,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 1475 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:05:05,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3258 states. [2023-11-29 01:05:06,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3258 to 3224. [2023-11-29 01:05:06,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3224 states, 2698 states have (on average 1.4610822831727206) internal successors, (3942), 2698 states have internal predecessors, (3942), 460 states have call successors, (460), 65 states have call predecessors, (460), 65 states have return successors, (460), 460 states have call predecessors, (460), 460 states have call successors, (460) [2023-11-29 01:05:06,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3224 states to 3224 states and 4862 transitions. [2023-11-29 01:05:06,170 INFO L78 Accepts]: Start accepts. Automaton has 3224 states and 4862 transitions. Word has length 611 [2023-11-29 01:05:06,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:05:06,171 INFO L495 AbstractCegarLoop]: Abstraction has 3224 states and 4862 transitions. [2023-11-29 01:05:06,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (92), 1 states have call predecessors, (92), 1 states have return successors, (92), 1 states have call predecessors, (92), 1 states have call successors, (92) [2023-11-29 01:05:06,171 INFO L276 IsEmpty]: Start isEmpty. Operand 3224 states and 4862 transitions. [2023-11-29 01:05:06,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 614 [2023-11-29 01:05:06,175 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:05:06,175 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:05:06,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 01:05:06,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 01:05:06,376 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:05:06,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:06,376 INFO L85 PathProgramCache]: Analyzing trace with hash -734508791, now seen corresponding path program 1 times [2023-11-29 01:05:06,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:06,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698738695] [2023-11-29 01:05:06,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:06,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:06,437 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:05:06,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [212822166] [2023-11-29 01:05:06,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:06,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:05:06,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:05:06,438 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:05:06,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 01:05:06,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:06,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 1474 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 01:05:06,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:05:07,109 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 6823 proven. 75 refuted. 0 times theorem prover too weak. 9846 trivial. 0 not checked. [2023-11-29 01:05:07,109 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:05:07,310 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 198 proven. 75 refuted. 0 times theorem prover too weak. 16471 trivial. 0 not checked. [2023-11-29 01:05:07,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:07,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698738695] [2023-11-29 01:05:07,311 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:05:07,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212822166] [2023-11-29 01:05:07,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212822166] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:05:07,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:05:07,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-29 01:05:07,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513268128] [2023-11-29 01:05:07,312 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:05:07,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:05:07,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:07,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:05:07,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:05:07,314 INFO L87 Difference]: Start difference. First operand 3224 states and 4862 transitions. Second operand has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 3 states have call successors, (117), 2 states have call predecessors, (117), 4 states have return successors, (118), 3 states have call predecessors, (118), 3 states have call successors, (118) [2023-11-29 01:05:08,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:05:08,119 INFO L93 Difference]: Finished difference Result 6323 states and 9516 transitions. [2023-11-29 01:05:08,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:05:08,120 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 3 states have call successors, (117), 2 states have call predecessors, (117), 4 states have return successors, (118), 3 states have call predecessors, (118), 3 states have call successors, (118) Word has length 613 [2023-11-29 01:05:08,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:05:08,125 INFO L225 Difference]: With dead ends: 6323 [2023-11-29 01:05:08,126 INFO L226 Difference]: Without dead ends: 3299 [2023-11-29 01:05:08,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1228 GetRequests, 1216 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:05:08,130 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 963 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 1280 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:05:08,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1029 Valid, 1280 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:05:08,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3299 states. [2023-11-29 01:05:08,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3299 to 3249. [2023-11-29 01:05:08,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3249 states, 2718 states have (on average 1.4576894775570273) internal successors, (3962), 2718 states have internal predecessors, (3962), 460 states have call successors, (460), 70 states have call predecessors, (460), 70 states have return successors, (460), 460 states have call predecessors, (460), 460 states have call successors, (460) [2023-11-29 01:05:08,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3249 states to 3249 states and 4882 transitions. [2023-11-29 01:05:08,381 INFO L78 Accepts]: Start accepts. Automaton has 3249 states and 4882 transitions. Word has length 613 [2023-11-29 01:05:08,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:05:08,382 INFO L495 AbstractCegarLoop]: Abstraction has 3249 states and 4882 transitions. [2023-11-29 01:05:08,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 3 states have call successors, (117), 2 states have call predecessors, (117), 4 states have return successors, (118), 3 states have call predecessors, (118), 3 states have call successors, (118) [2023-11-29 01:05:08,382 INFO L276 IsEmpty]: Start isEmpty. Operand 3249 states and 4882 transitions. [2023-11-29 01:05:08,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2023-11-29 01:05:08,386 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:05:08,386 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:05:08,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 01:05:08,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:05:08,587 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:05:08,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:08,588 INFO L85 PathProgramCache]: Analyzing trace with hash 335559136, now seen corresponding path program 1 times [2023-11-29 01:05:08,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:08,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730750967] [2023-11-29 01:05:08,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:08,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:08,643 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:05:08,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2074420211] [2023-11-29 01:05:08,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:08,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:05:08,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:05:08,645 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:05:08,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 01:05:18,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:18,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 1476 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-29 01:05:18,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:05:30,360 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 10395 proven. 1089 refuted. 0 times theorem prover too weak. 5260 trivial. 0 not checked. [2023-11-29 01:05:30,360 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:05:46,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:46,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730750967] [2023-11-29 01:05:46,143 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:05:46,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074420211] [2023-11-29 01:05:46,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074420211] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 01:05:46,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-29 01:05:46,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2023-11-29 01:05:46,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280316358] [2023-11-29 01:05:46,144 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-29 01:05:46,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 01:05:46,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:46,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 01:05:46,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=813, Unknown=2, NotChecked=0, Total=1056 [2023-11-29 01:05:46,146 INFO L87 Difference]: Start difference. First operand 3249 states and 4882 transitions. Second operand has 22 states, 22 states have (on average 8.5) internal successors, (187), 20 states have internal predecessors, (187), 8 states have call successors, (92), 8 states have call predecessors, (92), 11 states have return successors, (92), 7 states have call predecessors, (92), 8 states have call successors, (92) [2023-11-29 01:05:53,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:05:53,282 INFO L93 Difference]: Finished difference Result 8559 states and 12790 transitions. [2023-11-29 01:05:53,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 01:05:53,283 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.5) internal successors, (187), 20 states have internal predecessors, (187), 8 states have call successors, (92), 8 states have call predecessors, (92), 11 states have return successors, (92), 7 states have call predecessors, (92), 8 states have call successors, (92) Word has length 614 [2023-11-29 01:05:53,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:05:53,292 INFO L225 Difference]: With dead ends: 8559 [2023-11-29 01:05:53,292 INFO L226 Difference]: Without dead ends: 5583 [2023-11-29 01:05:53,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1072 GetRequests, 1029 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 18.4s TimeCoverageRelationStatistics Valid=500, Invalid=1478, Unknown=2, NotChecked=0, Total=1980 [2023-11-29 01:05:53,297 INFO L413 NwaCegarLoop]: 458 mSDtfsCounter, 945 mSDsluCounter, 1432 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 964 SdHoareTripleChecker+Valid, 1890 SdHoareTripleChecker+Invalid, 1249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-29 01:05:53,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [964 Valid, 1890 Invalid, 1249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-29 01:05:53,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5583 states. [2023-11-29 01:05:53,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5583 to 5345. [2023-11-29 01:05:53,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5345 states, 4774 states have (on average 1.4738165060745705) internal successors, (7036), 4774 states have internal predecessors, (7036), 460 states have call successors, (460), 110 states have call predecessors, (460), 110 states have return successors, (460), 460 states have call predecessors, (460), 460 states have call successors, (460) [2023-11-29 01:05:53,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5345 states to 5345 states and 7956 transitions. [2023-11-29 01:05:53,675 INFO L78 Accepts]: Start accepts. Automaton has 5345 states and 7956 transitions. Word has length 614 [2023-11-29 01:05:53,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:05:53,676 INFO L495 AbstractCegarLoop]: Abstraction has 5345 states and 7956 transitions. [2023-11-29 01:05:53,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.5) internal successors, (187), 20 states have internal predecessors, (187), 8 states have call successors, (92), 8 states have call predecessors, (92), 11 states have return successors, (92), 7 states have call predecessors, (92), 8 states have call successors, (92) [2023-11-29 01:05:53,676 INFO L276 IsEmpty]: Start isEmpty. Operand 5345 states and 7956 transitions. [2023-11-29 01:05:53,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2023-11-29 01:05:53,681 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:05:53,682 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:05:53,694 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 01:05:53,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:05:53,882 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:05:53,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:53,883 INFO L85 PathProgramCache]: Analyzing trace with hash -659134562, now seen corresponding path program 1 times [2023-11-29 01:05:53,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:53,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61997851] [2023-11-29 01:05:53,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:53,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:53,935 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:05:53,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2061063630] [2023-11-29 01:05:53,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:53,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:05:53,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:05:53,937 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:05:53,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 01:05:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:05:54,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 1474 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:05:54,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:05:55,835 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 8461 proven. 138 refuted. 0 times theorem prover too weak. 8145 trivial. 0 not checked. [2023-11-29 01:05:55,835 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:05:56,599 INFO L134 CoverageAnalysis]: Checked inductivity of 16744 backedges. 135 proven. 138 refuted. 0 times theorem prover too weak. 16471 trivial. 0 not checked. [2023-11-29 01:05:56,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:05:56,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61997851] [2023-11-29 01:05:56,600 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:05:56,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061063630] [2023-11-29 01:05:56,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061063630] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:05:56,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:05:56,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-11-29 01:05:56,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513790482] [2023-11-29 01:05:56,601 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:05:56,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 01:05:56,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:05:56,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 01:05:56,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-11-29 01:05:56,603 INFO L87 Difference]: Start difference. First operand 5345 states and 7956 transitions. Second operand has 10 states, 10 states have (on average 28.8) internal successors, (288), 10 states have internal predecessors, (288), 4 states have call successors, (184), 3 states have call predecessors, (184), 5 states have return successors, (184), 4 states have call predecessors, (184), 4 states have call successors, (184) [2023-11-29 01:05:58,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:05:58,444 INFO L93 Difference]: Finished difference Result 11183 states and 16467 transitions. [2023-11-29 01:05:58,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 01:05:58,445 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 28.8) internal successors, (288), 10 states have internal predecessors, (288), 4 states have call successors, (184), 3 states have call predecessors, (184), 5 states have return successors, (184), 4 states have call predecessors, (184), 4 states have call successors, (184) Word has length 614 [2023-11-29 01:05:58,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:05:58,456 INFO L225 Difference]: With dead ends: 11183 [2023-11-29 01:05:58,456 INFO L226 Difference]: Without dead ends: 7617 [2023-11-29 01:05:58,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1232 GetRequests, 1218 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=142, Unknown=0, NotChecked=0, Total=240 [2023-11-29 01:05:58,461 INFO L413 NwaCegarLoop]: 599 mSDtfsCounter, 1205 mSDsluCounter, 1715 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1250 SdHoareTripleChecker+Valid, 2314 SdHoareTripleChecker+Invalid, 1263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:05:58,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1250 Valid, 2314 Invalid, 1263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 934 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 01:05:58,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7617 states. [2023-11-29 01:05:58,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7617 to 3421. [2023-11-29 01:05:58,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3421 states, 2845 states have (on average 1.4203866432337433) internal successors, (4041), 2845 states have internal predecessors, (4041), 460 states have call successors, (460), 115 states have call predecessors, (460), 115 states have return successors, (460), 460 states have call predecessors, (460), 460 states have call successors, (460) [2023-11-29 01:05:58,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3421 states to 3421 states and 4961 transitions. [2023-11-29 01:05:58,904 INFO L78 Accepts]: Start accepts. Automaton has 3421 states and 4961 transitions. Word has length 614 [2023-11-29 01:05:58,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:05:58,904 INFO L495 AbstractCegarLoop]: Abstraction has 3421 states and 4961 transitions. [2023-11-29 01:05:58,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 28.8) internal successors, (288), 10 states have internal predecessors, (288), 4 states have call successors, (184), 3 states have call predecessors, (184), 5 states have return successors, (184), 4 states have call predecessors, (184), 4 states have call successors, (184) [2023-11-29 01:05:58,904 INFO L276 IsEmpty]: Start isEmpty. Operand 3421 states and 4961 transitions. [2023-11-29 01:05:58,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 616 [2023-11-29 01:05:58,908 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:05:58,909 INFO L195 NwaCegarLoop]: trace histogram [92, 92, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:05:58,929 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 01:05:59,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 01:05:59,109 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:05:59,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:05:59,110 INFO L85 PathProgramCache]: Analyzing trace with hash 2010595039, now seen corresponding path program 1 times [2023-11-29 01:05:59,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:05:59,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49903189] [2023-11-29 01:05:59,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:59,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:05:59,169 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:05:59,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [900989774] [2023-11-29 01:05:59,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:05:59,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:05:59,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:05:59,171 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:05:59,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98e4f1d8-b0e5-4866-b3b3-a02b9c3b21a0/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 01:07:21,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 01:07:21,659 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.