./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-57.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_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/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_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-57.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/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_80af0d88-e9c9-4731-a36d-4250f74f7517/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 7be03f27538991dd67b7dfcb6fbc9241148361cd7f7a5a94d15a5ee9d44d0977 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:06:48,400 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:06:48,466 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 01:06:48,470 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:06:48,471 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:06:48,493 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:06:48,494 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:06:48,494 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:06:48,495 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:06:48,495 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:06:48,496 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:06:48,496 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:06:48,497 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:06:48,498 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:06:48,498 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:06:48,499 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:06:48,499 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:06:48,500 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:06:48,500 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:06:48,500 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:06:48,501 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:06:48,501 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:06:48,502 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:06:48,502 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:06:48,503 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:06:48,503 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:06:48,504 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:06:48,504 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:06:48,505 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:06:48,505 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:06:48,505 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:06:48,506 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:06:48,506 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:06:48,507 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:06:48,507 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:06:48,507 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:06:48,508 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:06:48,508 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:06:48,508 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:06:48,508 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:06:48,508 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:06:48,509 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:06:48,509 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_80af0d88-e9c9-4731-a36d-4250f74f7517/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7be03f27538991dd67b7dfcb6fbc9241148361cd7f7a5a94d15a5ee9d44d0977 [2023-11-29 01:06:48,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:06:48,740 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:06:48,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:06:48,743 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:06:48,744 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:06:48,745 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-57.i [2023-11-29 01:06:51,474 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:06:51,735 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:06:51,735 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-57.i [2023-11-29 01:06:51,751 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/data/fe8dd3de2/7a48d5439676433d916f2f5dd223bb91/FLAG0658e421f [2023-11-29 01:06:51,763 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/data/fe8dd3de2/7a48d5439676433d916f2f5dd223bb91 [2023-11-29 01:06:51,765 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:06:51,766 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:06:51,768 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:06:51,768 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:06:51,774 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:06:51,774 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:06:51" (1/1) ... [2023-11-29 01:06:51,775 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f42d24b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:06:51, skipping insertion in model container [2023-11-29 01:06:51,775 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:06:51" (1/1) ... [2023-11-29 01:06:51,853 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:06:51,977 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_80af0d88-e9c9-4731-a36d-4250f74f7517/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-57.i[916,929] [2023-11-29 01:06:52,211 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:06:52,230 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:06:52,243 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_80af0d88-e9c9-4731-a36d-4250f74f7517/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-57.i[916,929] [2023-11-29 01:06:52,371 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:06:52,392 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:06:52,393 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:06:52 WrapperNode [2023-11-29 01:06:52,393 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:06:52,394 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:06:52,394 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:06:52,394 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:06:52,402 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:06:52" (1/1) ... [2023-11-29 01:06:52,430 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:06:52" (1/1) ... [2023-11-29 01:06:52,585 INFO L138 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 793 [2023-11-29 01:06:52,586 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:06:52,587 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:06:52,587 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:06:52,587 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:06:52,599 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:06:52" (1/1) ... [2023-11-29 01:06:52,599 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:06:52" (1/1) ... [2023-11-29 01:06:52,617 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:06:52" (1/1) ... [2023-11-29 01:06:52,674 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 01:06:52,674 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:06:52" (1/1) ... [2023-11-29 01:06:52,674 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:06:52" (1/1) ... [2023-11-29 01:06:52,698 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:06:52" (1/1) ... [2023-11-29 01:06:52,705 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:06:52" (1/1) ... [2023-11-29 01:06:52,715 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:06:52" (1/1) ... [2023-11-29 01:06:52,723 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:06:52" (1/1) ... [2023-11-29 01:06:52,736 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:06:52,737 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:06:52,737 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:06:52,737 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:06:52,738 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:06:52" (1/1) ... [2023-11-29 01:06:52,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:06:52,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:06:52,766 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:06:52,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:06:52,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:06:52,799 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-29 01:06:52,800 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-29 01:06:52,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:06:52,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:06:52,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:06:52,936 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:06:52,938 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:06:53,968 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:06:54,031 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:06:54,032 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-29 01:06:54,032 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:06:54 BoogieIcfgContainer [2023-11-29 01:06:54,033 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:06:54,035 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:06:54,035 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:06:54,039 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:06:54,039 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:06:51" (1/3) ... [2023-11-29 01:06:54,039 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@235c4f74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:06:54, skipping insertion in model container [2023-11-29 01:06:54,040 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:06:52" (2/3) ... [2023-11-29 01:06:54,040 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@235c4f74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:06:54, skipping insertion in model container [2023-11-29 01:06:54,040 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:06:54" (3/3) ... [2023-11-29 01:06:54,041 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-57.i [2023-11-29 01:06:54,060 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:06:54,061 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 01:06:54,119 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:06:54,126 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;@68698712, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:06:54,127 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 01:06:54,133 INFO L276 IsEmpty]: Start isEmpty. Operand has 291 states, 208 states have (on average 1.5625) internal successors, (325), 209 states have internal predecessors, (325), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2023-11-29 01:06:54,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2023-11-29 01:06:54,169 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:06:54,170 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:06:54,170 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:06:54,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:06:54,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1515056828, now seen corresponding path program 1 times [2023-11-29 01:06:54,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:06:54,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172533351] [2023-11-29 01:06:54,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:54,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:06:54,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:54,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:06:54,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172533351] [2023-11-29 01:06:54,553 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-11-29 01:06:54,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544456516] [2023-11-29 01:06:54,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:54,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:06:54,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:06:54,561 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:06:54,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:06:55,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:55,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 1405 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 01:06:55,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:06:55,129 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 158 proven. 0 refuted. 0 times theorem prover too weak. 12482 trivial. 0 not checked. [2023-11-29 01:06:55,129 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:06:55,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544456516] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:06:55,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:06:55,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:06:55,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715194452] [2023-11-29 01:06:55,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:06:55,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 01:06:55,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:06:55,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 01:06:55,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:06:55,167 INFO L87 Difference]: Start difference. First operand has 291 states, 208 states have (on average 1.5625) internal successors, (325), 209 states have internal predecessors, (325), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) Second operand has 2 states, 2 states have (on average 77.0) internal successors, (154), 2 states have internal predecessors, (154), 2 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 2 states have call successors, (80) [2023-11-29 01:06:55,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:06:55,251 INFO L93 Difference]: Finished difference Result 579 states and 1048 transitions. [2023-11-29 01:06:55,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 01:06:55,256 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 77.0) internal successors, (154), 2 states have internal predecessors, (154), 2 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 2 states have call successors, (80) Word has length 549 [2023-11-29 01:06:55,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:06:55,267 INFO L225 Difference]: With dead ends: 579 [2023-11-29 01:06:55,267 INFO L226 Difference]: Without dead ends: 289 [2023-11-29 01:06:55,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 548 GetRequests, 548 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 01:06:55,276 INFO L413 NwaCegarLoop]: 476 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, 476 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 01:06:55,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 476 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:06:55,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-11-29 01:06:55,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 289. [2023-11-29 01:06:55,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 207 states have (on average 1.541062801932367) internal successors, (319), 207 states have internal predecessors, (319), 80 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2023-11-29 01:06:55,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 479 transitions. [2023-11-29 01:06:55,374 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 479 transitions. Word has length 549 [2023-11-29 01:06:55,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:06:55,375 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 479 transitions. [2023-11-29 01:06:55,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 77.0) internal successors, (154), 2 states have internal predecessors, (154), 2 states have call successors, (80), 2 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 2 states have call successors, (80) [2023-11-29 01:06:55,376 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 479 transitions. [2023-11-29 01:06:55,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2023-11-29 01:06:55,392 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:06:55,392 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:06:55,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:06:55,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:06:55,593 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:06:55,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:06:55,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1831895168, now seen corresponding path program 1 times [2023-11-29 01:06:55,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:06:55,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923237185] [2023-11-29 01:06:55,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:55,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:06:55,734 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:06:55,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1822628577] [2023-11-29 01:06:55,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:55,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:06:55,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:06:55,737 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:06:55,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:06:56,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:56,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 1405 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:06:56,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:06:56,296 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-11-29 01:06:56,296 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:06:56,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:06:56,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923237185] [2023-11-29 01:06:56,297 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:06:56,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822628577] [2023-11-29 01:06:56,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822628577] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:06:56,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:06:56,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:06:56,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032600110] [2023-11-29 01:06:56,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:06:56,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:06:56,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:06:56,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:06:56,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:06:56,302 INFO L87 Difference]: Start difference. First operand 289 states and 479 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-29 01:06:56,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:06:56,473 INFO L93 Difference]: Finished difference Result 718 states and 1190 transitions. [2023-11-29 01:06:56,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:06:56,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 549 [2023-11-29 01:06:56,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:06:56,482 INFO L225 Difference]: With dead ends: 718 [2023-11-29 01:06:56,482 INFO L226 Difference]: Without dead ends: 430 [2023-11-29 01:06:56,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 548 GetRequests, 547 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 01:06:56,485 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 210 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:06:56,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 952 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:06:56,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2023-11-29 01:06:56,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 427. [2023-11-29 01:06:56,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 325 states have (on average 1.5723076923076924) internal successors, (511), 326 states have internal predecessors, (511), 99 states have call successors, (99), 2 states have call predecessors, (99), 2 states have return successors, (99), 98 states have call predecessors, (99), 99 states have call successors, (99) [2023-11-29 01:06:56,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 709 transitions. [2023-11-29 01:06:56,538 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 709 transitions. Word has length 549 [2023-11-29 01:06:56,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:06:56,541 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 709 transitions. [2023-11-29 01:06:56,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-29 01:06:56,541 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 709 transitions. [2023-11-29 01:06:56,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 551 [2023-11-29 01:06:56,547 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:06:56,547 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:06:56,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 01:06:56,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:06:56,748 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:06:56,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:06:56,749 INFO L85 PathProgramCache]: Analyzing trace with hash 371324301, now seen corresponding path program 1 times [2023-11-29 01:06:56,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:06:56,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679118321] [2023-11-29 01:06:56,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:56,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:06:56,849 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:06:56,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [53168302] [2023-11-29 01:06:56,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:56,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:06:56,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:06:56,851 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:06:56,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:06:57,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:57,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 1406 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:06:57,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:06:57,367 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-11-29 01:06:57,367 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:06:57,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:06:57,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679118321] [2023-11-29 01:06:57,368 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:06:57,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53168302] [2023-11-29 01:06:57,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53168302] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:06:57,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:06:57,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:06:57,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316530946] [2023-11-29 01:06:57,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:06:57,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:06:57,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:06:57,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:06:57,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:06:57,371 INFO L87 Difference]: Start difference. First operand 427 states and 709 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-29 01:06:57,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:06:57,423 INFO L93 Difference]: Finished difference Result 855 states and 1421 transitions. [2023-11-29 01:06:57,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:06:57,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 550 [2023-11-29 01:06:57,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:06:57,430 INFO L225 Difference]: With dead ends: 855 [2023-11-29 01:06:57,430 INFO L226 Difference]: Without dead ends: 429 [2023-11-29 01:06:57,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 548 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 01:06:57,432 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 0 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:06:57,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 944 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:06:57,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2023-11-29 01:06:57,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2023-11-29 01:06:57,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 327 states have (on average 1.5688073394495412) internal successors, (513), 328 states have internal predecessors, (513), 99 states have call successors, (99), 2 states have call predecessors, (99), 2 states have return successors, (99), 98 states have call predecessors, (99), 99 states have call successors, (99) [2023-11-29 01:06:57,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 711 transitions. [2023-11-29 01:06:57,469 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 711 transitions. Word has length 550 [2023-11-29 01:06:57,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:06:57,471 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 711 transitions. [2023-11-29 01:06:57,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-29 01:06:57,471 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 711 transitions. [2023-11-29 01:06:57,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2023-11-29 01:06:57,476 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:06:57,476 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:06:57,483 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 01:06:57,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:06:57,677 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:06:57,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:06:57,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1600692047, now seen corresponding path program 1 times [2023-11-29 01:06:57,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:06:57,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156156529] [2023-11-29 01:06:57,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:57,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:06:57,773 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:06:57,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1553691804] [2023-11-29 01:06:57,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:57,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:06:57,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:06:57,775 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:06:57,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:06:58,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:58,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 1407 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:06:58,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:06:58,271 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-11-29 01:06:58,271 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:06:58,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:06:58,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156156529] [2023-11-29 01:06:58,272 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:06:58,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553691804] [2023-11-29 01:06:58,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553691804] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:06:58,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:06:58,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:06:58,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066158581] [2023-11-29 01:06:58,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:06:58,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:06:58,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:06:58,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:06:58,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:06:58,275 INFO L87 Difference]: Start difference. First operand 429 states and 711 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-29 01:06:58,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:06:58,353 INFO L93 Difference]: Finished difference Result 1285 states and 2131 transitions. [2023-11-29 01:06:58,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:06:58,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 551 [2023-11-29 01:06:58,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:06:58,362 INFO L225 Difference]: With dead ends: 1285 [2023-11-29 01:06:58,362 INFO L226 Difference]: Without dead ends: 857 [2023-11-29 01:06:58,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 549 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 01:06:58,365 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 473 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 942 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:06:58,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 942 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:06:58,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2023-11-29 01:06:58,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 855. [2023-11-29 01:06:58,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 652 states have (on average 1.5674846625766872) internal successors, (1022), 654 states have internal predecessors, (1022), 198 states have call successors, (198), 4 states have call predecessors, (198), 4 states have return successors, (198), 196 states have call predecessors, (198), 198 states have call successors, (198) [2023-11-29 01:06:58,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1418 transitions. [2023-11-29 01:06:58,449 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1418 transitions. Word has length 551 [2023-11-29 01:06:58,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:06:58,450 INFO L495 AbstractCegarLoop]: Abstraction has 855 states and 1418 transitions. [2023-11-29 01:06:58,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-29 01:06:58,451 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1418 transitions. [2023-11-29 01:06:58,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2023-11-29 01:06:58,456 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:06:58,457 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:06:58,465 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 01:06:58,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:06:58,658 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:06:58,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:06:58,658 INFO L85 PathProgramCache]: Analyzing trace with hash 276371183, now seen corresponding path program 1 times [2023-11-29 01:06:58,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:06:58,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599395959] [2023-11-29 01:06:58,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:58,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:06:58,729 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:06:58,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1005683958] [2023-11-29 01:06:58,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:58,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:06:58,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:06:58,731 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:06:58,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:06:59,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:06:59,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 1408 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:06:59,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:06:59,312 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-11-29 01:06:59,312 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:06:59,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:06:59,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599395959] [2023-11-29 01:06:59,313 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:06:59,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005683958] [2023-11-29 01:06:59,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005683958] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:06:59,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:06:59,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:06:59,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359482642] [2023-11-29 01:06:59,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:06:59,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:06:59,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:06:59,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:06:59,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:06:59,317 INFO L87 Difference]: Start difference. First operand 855 states and 1418 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-29 01:06:59,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:06:59,420 INFO L93 Difference]: Finished difference Result 2559 states and 4244 transitions. [2023-11-29 01:06:59,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:06:59,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 551 [2023-11-29 01:06:59,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:06:59,432 INFO L225 Difference]: With dead ends: 2559 [2023-11-29 01:06:59,432 INFO L226 Difference]: Without dead ends: 1705 [2023-11-29 01:06:59,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 549 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 01:06:59,435 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 451 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 933 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:06:59,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 933 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:06:59,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2023-11-29 01:06:59,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 1703. [2023-11-29 01:06:59,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1703 states, 1298 states have (on average 1.5593220338983051) internal successors, (2024), 1302 states have internal predecessors, (2024), 396 states have call successors, (396), 8 states have call predecessors, (396), 8 states have return successors, (396), 392 states have call predecessors, (396), 396 states have call successors, (396) [2023-11-29 01:06:59,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1703 states to 1703 states and 2816 transitions. [2023-11-29 01:06:59,584 INFO L78 Accepts]: Start accepts. Automaton has 1703 states and 2816 transitions. Word has length 551 [2023-11-29 01:06:59,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:06:59,585 INFO L495 AbstractCegarLoop]: Abstraction has 1703 states and 2816 transitions. [2023-11-29 01:06:59,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-29 01:06:59,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1703 states and 2816 transitions. [2023-11-29 01:06:59,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2023-11-29 01:06:59,590 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:06:59,591 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:06:59,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 01:06:59,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:06:59,791 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:06:59,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:06:59,792 INFO L85 PathProgramCache]: Analyzing trace with hash 2010475633, now seen corresponding path program 1 times [2023-11-29 01:06:59,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:06:59,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729611058] [2023-11-29 01:06:59,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:59,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:06:59,872 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:06:59,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [646771713] [2023-11-29 01:06:59,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:06:59,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:06:59,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:06:59,874 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:06:59,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:07:00,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:00,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 1409 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:07:00,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:07:00,425 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-11-29 01:07:00,425 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:07:00,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:07:00,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729611058] [2023-11-29 01:07:00,426 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:07:00,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646771713] [2023-11-29 01:07:00,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646771713] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:07:00,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:07:00,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:07:00,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875042372] [2023-11-29 01:07:00,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:07:00,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:07:00,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:07:00,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:07:00,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:07:00,429 INFO L87 Difference]: Start difference. First operand 1703 states and 2816 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-29 01:07:00,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:07:00,621 INFO L93 Difference]: Finished difference Result 4687 states and 7754 transitions. [2023-11-29 01:07:00,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:07:00,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 551 [2023-11-29 01:07:00,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:07:00,640 INFO L225 Difference]: With dead ends: 4687 [2023-11-29 01:07:00,640 INFO L226 Difference]: Without dead ends: 2985 [2023-11-29 01:07:00,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 549 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 01:07:00,645 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 261 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:07:00,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 1026 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:07:00,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2985 states. [2023-11-29 01:07:00,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2985 to 2979. [2023-11-29 01:07:00,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2979 states, 2322 states have (on average 1.566752799310939) internal successors, (3638), 2334 states have internal predecessors, (3638), 640 states have call successors, (640), 16 states have call predecessors, (640), 16 states have return successors, (640), 628 states have call predecessors, (640), 640 states have call successors, (640) [2023-11-29 01:07:00,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2979 states to 2979 states and 4918 transitions. [2023-11-29 01:07:00,867 INFO L78 Accepts]: Start accepts. Automaton has 2979 states and 4918 transitions. Word has length 551 [2023-11-29 01:07:00,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:07:00,867 INFO L495 AbstractCegarLoop]: Abstraction has 2979 states and 4918 transitions. [2023-11-29 01:07:00,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-29 01:07:00,868 INFO L276 IsEmpty]: Start isEmpty. Operand 2979 states and 4918 transitions. [2023-11-29 01:07:00,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2023-11-29 01:07:00,875 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:07:00,875 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:07:00,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 01:07:01,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:07:01,076 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:07:01,076 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:07:01,076 INFO L85 PathProgramCache]: Analyzing trace with hash -946673615, now seen corresponding path program 1 times [2023-11-29 01:07:01,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:07:01,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836008627] [2023-11-29 01:07:01,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:01,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:07:01,153 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:07:01,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [230680861] [2023-11-29 01:07:01,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:01,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:07:01,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:07:01,154 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:07:01,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 01:07:01,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:01,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 1409 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:07:01,602 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:07:01,649 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-11-29 01:07:01,649 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:07:01,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:07:01,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836008627] [2023-11-29 01:07:01,650 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:07:01,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230680861] [2023-11-29 01:07:01,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230680861] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:07:01,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:07:01,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:07:01,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102049367] [2023-11-29 01:07:01,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:07:01,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:07:01,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:07:01,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:07:01,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:07:01,653 INFO L87 Difference]: Start difference. First operand 2979 states and 4918 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-29 01:07:01,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:07:01,869 INFO L93 Difference]: Finished difference Result 8855 states and 14608 transitions. [2023-11-29 01:07:01,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:07:01,870 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 551 [2023-11-29 01:07:01,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:07:01,901 INFO L225 Difference]: With dead ends: 8855 [2023-11-29 01:07:01,901 INFO L226 Difference]: Without dead ends: 5877 [2023-11-29 01:07:01,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 550 GetRequests, 549 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 01:07:01,910 INFO L413 NwaCegarLoop]: 797 mSDtfsCounter, 444 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:07:01,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 1262 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:07:01,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5877 states. [2023-11-29 01:07:02,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5877 to 3451. [2023-11-29 01:07:02,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3451 states, 2794 states have (on average 1.58840372226199) internal successors, (4438), 2806 states have internal predecessors, (4438), 640 states have call successors, (640), 16 states have call predecessors, (640), 16 states have return successors, (640), 628 states have call predecessors, (640), 640 states have call successors, (640) [2023-11-29 01:07:02,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3451 states to 3451 states and 5718 transitions. [2023-11-29 01:07:02,295 INFO L78 Accepts]: Start accepts. Automaton has 3451 states and 5718 transitions. Word has length 551 [2023-11-29 01:07:02,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:07:02,296 INFO L495 AbstractCegarLoop]: Abstraction has 3451 states and 5718 transitions. [2023-11-29 01:07:02,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-29 01:07:02,296 INFO L276 IsEmpty]: Start isEmpty. Operand 3451 states and 5718 transitions. [2023-11-29 01:07:02,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2023-11-29 01:07:02,305 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:07:02,305 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:07:02,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-29 01:07:02,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:07:02,506 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:07:02,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:07:02,506 INFO L85 PathProgramCache]: Analyzing trace with hash -806125005, now seen corresponding path program 1 times [2023-11-29 01:07:02,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:07:02,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810937086] [2023-11-29 01:07:02,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:02,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:07:02,596 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:07:02,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1557284015] [2023-11-29 01:07:02,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:02,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:07:02,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:07:02,598 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:07:02,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 01:07:03,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:03,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 1408 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:07:03,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:07:03,353 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 6379 proven. 111 refuted. 0 times theorem prover too weak. 6150 trivial. 0 not checked. [2023-11-29 01:07:03,354 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:07:03,715 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 126 proven. 111 refuted. 0 times theorem prover too weak. 12403 trivial. 0 not checked. [2023-11-29 01:07:03,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:07:03,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810937086] [2023-11-29 01:07:03,716 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:07:03,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557284015] [2023-11-29 01:07:03,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557284015] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:07:03,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:07:03,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 01:07:03,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620030801] [2023-11-29 01:07:03,717 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:07:03,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:07:03,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:07:03,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:07:03,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:07:03,720 INFO L87 Difference]: Start difference. First operand 3451 states and 5718 transitions. Second operand has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 2 states have call successors, (117), 2 states have call predecessors, (117), 4 states have return successors, (118), 2 states have call predecessors, (118), 2 states have call successors, (118) [2023-11-29 01:07:04,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:07:04,333 INFO L93 Difference]: Finished difference Result 5449 states and 8969 transitions. [2023-11-29 01:07:04,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:07:04,335 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 2 states have call successors, (117), 2 states have call predecessors, (117), 4 states have return successors, (118), 2 states have call predecessors, (118), 2 states have call successors, (118) Word has length 551 [2023-11-29 01:07:04,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:07:04,348 INFO L225 Difference]: With dead ends: 5449 [2023-11-29 01:07:04,348 INFO L226 Difference]: Without dead ends: 1999 [2023-11-29 01:07:04,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1104 GetRequests, 1094 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 01:07:04,356 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 305 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:07:04,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 991 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:07:04,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1999 states. [2023-11-29 01:07:04,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1999 to 1975. [2023-11-29 01:07:04,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1975 states, 1562 states have (on average 1.5569782330345712) internal successors, (2432), 1566 states have internal predecessors, (2432), 396 states have call successors, (396), 16 states have call predecessors, (396), 16 states have return successors, (396), 392 states have call predecessors, (396), 396 states have call successors, (396) [2023-11-29 01:07:04,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 3224 transitions. [2023-11-29 01:07:04,559 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 3224 transitions. Word has length 551 [2023-11-29 01:07:04,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:07:04,561 INFO L495 AbstractCegarLoop]: Abstraction has 1975 states and 3224 transitions. [2023-11-29 01:07:04,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.285714285714285) internal successors, (163), 7 states have internal predecessors, (163), 2 states have call successors, (117), 2 states have call predecessors, (117), 4 states have return successors, (118), 2 states have call predecessors, (118), 2 states have call successors, (118) [2023-11-29 01:07:04,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 3224 transitions. [2023-11-29 01:07:04,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2023-11-29 01:07:04,568 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:07:04,569 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:07:04,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 01:07:04,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:07:04,770 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:07:04,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:07:04,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1517812693, now seen corresponding path program 1 times [2023-11-29 01:07:04,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:07:04,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037354180] [2023-11-29 01:07:04,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:04,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:07:04,854 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:07:04,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1788162149] [2023-11-29 01:07:04,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:04,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:07:04,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:07:04,855 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:07:04,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 01:07:05,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:05,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 1410 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:07:05,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:07:05,505 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 1977 proven. 18 refuted. 0 times theorem prover too weak. 10645 trivial. 0 not checked. [2023-11-29 01:07:05,505 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:07:05,839 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 219 proven. 18 refuted. 0 times theorem prover too weak. 12403 trivial. 0 not checked. [2023-11-29 01:07:05,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:07:05,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037354180] [2023-11-29 01:07:05,840 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:07:05,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788162149] [2023-11-29 01:07:05,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788162149] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:07:05,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:07:05,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-11-29 01:07:05,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577921907] [2023-11-29 01:07:05,841 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:07:05,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:07:05,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:07:05,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:07:05,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:07:05,844 INFO L87 Difference]: Start difference. First operand 1975 states and 3224 transitions. Second operand has 8 states, 8 states have (on average 20.5) internal successors, (164), 8 states have internal predecessors, (164), 2 states have call successors, (86), 2 states have call predecessors, (86), 4 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) [2023-11-29 01:07:07,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:07:07,188 INFO L93 Difference]: Finished difference Result 5515 states and 8902 transitions. [2023-11-29 01:07:07,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 01:07:07,189 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.5) internal successors, (164), 8 states have internal predecessors, (164), 2 states have call successors, (86), 2 states have call predecessors, (86), 4 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) Word has length 552 [2023-11-29 01:07:07,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:07:07,213 INFO L225 Difference]: With dead ends: 5515 [2023-11-29 01:07:07,214 INFO L226 Difference]: Without dead ends: 3541 [2023-11-29 01:07:07,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1114 GetRequests, 1095 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2023-11-29 01:07:07,221 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 1400 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 608 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1348 SdHoareTripleChecker+Invalid, 1145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 608 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:07:07,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1348 Invalid, 1145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [608 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 01:07:07,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3541 states. [2023-11-29 01:07:07,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3541 to 2023. [2023-11-29 01:07:07,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2023 states, 1606 states have (on average 1.5392278953922789) internal successors, (2472), 1610 states have internal predecessors, (2472), 396 states have call successors, (396), 20 states have call predecessors, (396), 20 states have return successors, (396), 392 states have call predecessors, (396), 396 states have call successors, (396) [2023-11-29 01:07:07,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2023 states to 2023 states and 3264 transitions. [2023-11-29 01:07:07,522 INFO L78 Accepts]: Start accepts. Automaton has 2023 states and 3264 transitions. Word has length 552 [2023-11-29 01:07:07,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:07:07,523 INFO L495 AbstractCegarLoop]: Abstraction has 2023 states and 3264 transitions. [2023-11-29 01:07:07,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.5) internal successors, (164), 8 states have internal predecessors, (164), 2 states have call successors, (86), 2 states have call predecessors, (86), 4 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) [2023-11-29 01:07:07,524 INFO L276 IsEmpty]: Start isEmpty. Operand 2023 states and 3264 transitions. [2023-11-29 01:07:07,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2023-11-29 01:07:07,531 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:07:07,532 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:07:07,540 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 01:07:07,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:07:07,733 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:07:07,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:07:07,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1124936452, now seen corresponding path program 1 times [2023-11-29 01:07:07,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:07:07,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507139542] [2023-11-29 01:07:07,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:07,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:07:07,799 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:07:07,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [106930816] [2023-11-29 01:07:07,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:07,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:07:07,799 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:07:07,800 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:07:07,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 01:07:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:08,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 1415 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:07:08,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:07:08,380 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-11-29 01:07:08,381 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:07:08,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:07:08,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507139542] [2023-11-29 01:07:08,381 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:07:08,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106930816] [2023-11-29 01:07:08,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [106930816] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:07:08,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:07:08,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:07:08,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756239482] [2023-11-29 01:07:08,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:07:08,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:07:08,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:07:08,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:07:08,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:07:08,384 INFO L87 Difference]: Start difference. First operand 2023 states and 3264 transitions. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-29 01:07:10,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:07:10,108 INFO L93 Difference]: Finished difference Result 10589 states and 17023 transitions. [2023-11-29 01:07:10,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 01:07:10,132 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 553 [2023-11-29 01:07:10,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:07:10,180 INFO L225 Difference]: With dead ends: 10589 [2023-11-29 01:07:10,180 INFO L226 Difference]: Without dead ends: 8567 [2023-11-29 01:07:10,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 559 GetRequests, 552 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:07:10,187 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 1715 mSDsluCounter, 1228 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 613 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1715 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 613 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:07:10,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1715 Valid, 1717 Invalid, 1291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [613 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 01:07:10,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8567 states. [2023-11-29 01:07:11,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8567 to 8219. [2023-11-29 01:07:11,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8219 states, 6206 states have (on average 1.5078955849178215) internal successors, (9358), 6238 states have internal predecessors, (9358), 1916 states have call successors, (1916), 96 states have call predecessors, (1916), 96 states have return successors, (1916), 1884 states have call predecessors, (1916), 1916 states have call successors, (1916) [2023-11-29 01:07:11,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8219 states to 8219 states and 13190 transitions. [2023-11-29 01:07:11,169 INFO L78 Accepts]: Start accepts. Automaton has 8219 states and 13190 transitions. Word has length 553 [2023-11-29 01:07:11,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:07:11,170 INFO L495 AbstractCegarLoop]: Abstraction has 8219 states and 13190 transitions. [2023-11-29 01:07:11,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-29 01:07:11,171 INFO L276 IsEmpty]: Start isEmpty. Operand 8219 states and 13190 transitions. [2023-11-29 01:07:11,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2023-11-29 01:07:11,183 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:07:11,184 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:07:11,193 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 01:07:11,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 01:07:11,385 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:07:11,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:07:11,385 INFO L85 PathProgramCache]: Analyzing trace with hash 990922946, now seen corresponding path program 1 times [2023-11-29 01:07:11,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:07:11,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544162899] [2023-11-29 01:07:11,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:11,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:07:11,447 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:07:11,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1487919032] [2023-11-29 01:07:11,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:11,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:07:11,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:07:11,448 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:07:11,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 01:07:11,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:11,938 INFO L262 TraceCheckSpWp]: Trace formula consists of 1414 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:07:11,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:07:12,266 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-11-29 01:07:12,267 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:07:12,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:07:12,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544162899] [2023-11-29 01:07:12,267 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:07:12,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487919032] [2023-11-29 01:07:12,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487919032] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:07:12,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:07:12,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:07:12,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385791015] [2023-11-29 01:07:12,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:07:12,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 01:07:12,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:07:12,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 01:07:12,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:07:12,270 INFO L87 Difference]: Start difference. First operand 8219 states and 13190 transitions. Second operand has 6 states, 6 states have (on average 26.0) internal successors, (156), 6 states have internal predecessors, (156), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-29 01:07:13,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:07:13,085 INFO L93 Difference]: Finished difference Result 26571 states and 42730 transitions. [2023-11-29 01:07:13,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:07:13,086 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 6 states have internal predecessors, (156), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 553 [2023-11-29 01:07:13,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:07:13,124 INFO L225 Difference]: With dead ends: 26571 [2023-11-29 01:07:13,124 INFO L226 Difference]: Without dead ends: 18353 [2023-11-29 01:07:13,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 548 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:07:13,146 INFO L413 NwaCegarLoop]: 528 mSDtfsCounter, 605 mSDsluCounter, 1620 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 2148 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:07:13,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [605 Valid, 2148 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:07:13,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18353 states. [2023-11-29 01:07:14,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18353 to 14859. [2023-11-29 01:07:14,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14859 states, 12726 states have (on average 1.5786578657865786) internal successors, (20090), 12798 states have internal predecessors, (20090), 1996 states have call successors, (1996), 136 states have call predecessors, (1996), 136 states have return successors, (1996), 1924 states have call predecessors, (1996), 1996 states have call successors, (1996) [2023-11-29 01:07:14,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14859 states to 14859 states and 24082 transitions. [2023-11-29 01:07:14,265 INFO L78 Accepts]: Start accepts. Automaton has 14859 states and 24082 transitions. Word has length 553 [2023-11-29 01:07:14,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:07:14,266 INFO L495 AbstractCegarLoop]: Abstraction has 14859 states and 24082 transitions. [2023-11-29 01:07:14,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 6 states have internal predecessors, (156), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-29 01:07:14,266 INFO L276 IsEmpty]: Start isEmpty. Operand 14859 states and 24082 transitions. [2023-11-29 01:07:14,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2023-11-29 01:07:14,284 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:07:14,284 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:07:14,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 01:07:14,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 01:07:14,485 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:07:14,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:07:14,486 INFO L85 PathProgramCache]: Analyzing trace with hash 637834564, now seen corresponding path program 1 times [2023-11-29 01:07:14,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:07:14,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669401310] [2023-11-29 01:07:14,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:14,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:07:14,548 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:07:14,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [343272161] [2023-11-29 01:07:14,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:14,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:07:14,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:07:14,550 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:07:14,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 01:07:15,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:15,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 1411 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 01:07:15,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:07:16,421 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-11-29 01:07:16,421 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:07:16,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:07:16,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669401310] [2023-11-29 01:07:16,421 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:07:16,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343272161] [2023-11-29 01:07:16,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343272161] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:07:16,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:07:16,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 01:07:16,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893259537] [2023-11-29 01:07:16,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:07:16,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 01:07:16,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:07:16,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 01:07:16,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-29 01:07:16,424 INFO L87 Difference]: Start difference. First operand 14859 states and 24082 transitions. Second operand has 9 states, 9 states have (on average 17.333333333333332) internal successors, (156), 8 states have internal predecessors, (156), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-29 01:07:19,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:07:19,402 INFO L93 Difference]: Finished difference Result 56185 states and 90495 transitions. [2023-11-29 01:07:19,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 01:07:19,403 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.333333333333332) internal successors, (156), 8 states have internal predecessors, (156), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 553 [2023-11-29 01:07:19,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:07:19,475 INFO L225 Difference]: With dead ends: 56185 [2023-11-29 01:07:19,475 INFO L226 Difference]: Without dead ends: 41327 [2023-11-29 01:07:19,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 557 GetRequests, 545 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:07:19,500 INFO L413 NwaCegarLoop]: 724 mSDtfsCounter, 1197 mSDsluCounter, 2799 mSDsCounter, 0 mSdLazyCounter, 922 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 3523 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:07:19,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1197 Valid, 3523 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 922 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 01:07:19,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41327 states. [2023-11-29 01:07:21,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41327 to 37907. [2023-11-29 01:07:21,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37907 states, 31510 states have (on average 1.5499206601079023) internal successors, (48838), 31726 states have internal predecessors, (48838), 5988 states have call successors, (5988), 408 states have call predecessors, (5988), 408 states have return successors, (5988), 5772 states have call predecessors, (5988), 5988 states have call successors, (5988) [2023-11-29 01:07:21,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37907 states to 37907 states and 60814 transitions. [2023-11-29 01:07:21,825 INFO L78 Accepts]: Start accepts. Automaton has 37907 states and 60814 transitions. Word has length 553 [2023-11-29 01:07:21,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:07:21,826 INFO L495 AbstractCegarLoop]: Abstraction has 37907 states and 60814 transitions. [2023-11-29 01:07:21,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.333333333333332) internal successors, (156), 8 states have internal predecessors, (156), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-29 01:07:21,827 INFO L276 IsEmpty]: Start isEmpty. Operand 37907 states and 60814 transitions. [2023-11-29 01:07:21,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2023-11-29 01:07:21,875 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:07:21,876 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:07:21,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 01:07:22,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 01:07:22,077 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:07:22,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:07:22,077 INFO L85 PathProgramCache]: Analyzing trace with hash 853619806, now seen corresponding path program 1 times [2023-11-29 01:07:22,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:07:22,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387325480] [2023-11-29 01:07:22,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:22,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:07:22,174 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:07:22,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [298520282] [2023-11-29 01:07:22,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:22,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:07:22,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:07:22,176 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:07:22,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 01:07:22,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:22,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 1411 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:07:22,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:07:23,225 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-11-29 01:07:23,225 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:07:23,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:07:23,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387325480] [2023-11-29 01:07:23,226 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:07:23,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298520282] [2023-11-29 01:07:23,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298520282] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:07:23,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:07:23,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 01:07:23,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145042636] [2023-11-29 01:07:23,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:07:23,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:07:23,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:07:23,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:07:23,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:07:23,229 INFO L87 Difference]: Start difference. First operand 37907 states and 60814 transitions. Second operand has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 6 states have internal predecessors, (156), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-29 01:07:28,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:07:28,275 INFO L93 Difference]: Finished difference Result 154119 states and 247386 transitions. [2023-11-29 01:07:28,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:07:28,277 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 6 states have internal predecessors, (156), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 553 [2023-11-29 01:07:28,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:07:28,651 INFO L225 Difference]: With dead ends: 154119 [2023-11-29 01:07:28,651 INFO L226 Difference]: Without dead ends: 116213 [2023-11-29 01:07:28,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 547 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:07:28,693 INFO L413 NwaCegarLoop]: 925 mSDtfsCounter, 1585 mSDsluCounter, 2697 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 3622 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 01:07:28,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1585 Valid, 3622 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 01:07:28,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116213 states. [2023-11-29 01:07:34,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116213 to 100283. [2023-11-29 01:07:34,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100283 states, 83518 states have (on average 1.5455590411647788) internal successors, (129082), 84070 states have internal predecessors, (129082), 15684 states have call successors, (15684), 1080 states have call predecessors, (15684), 1080 states have return successors, (15684), 15132 states have call predecessors, (15684), 15684 states have call successors, (15684) [2023-11-29 01:07:34,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100283 states to 100283 states and 160450 transitions. [2023-11-29 01:07:34,971 INFO L78 Accepts]: Start accepts. Automaton has 100283 states and 160450 transitions. Word has length 553 [2023-11-29 01:07:34,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:07:34,972 INFO L495 AbstractCegarLoop]: Abstraction has 100283 states and 160450 transitions. [2023-11-29 01:07:34,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.285714285714285) internal successors, (156), 6 states have internal predecessors, (156), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-29 01:07:34,972 INFO L276 IsEmpty]: Start isEmpty. Operand 100283 states and 160450 transitions. [2023-11-29 01:07:35,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2023-11-29 01:07:35,015 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:07:35,016 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:07:35,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-29 01:07:35,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 01:07:35,217 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:07:35,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:07:35,218 INFO L85 PathProgramCache]: Analyzing trace with hash 799226908, now seen corresponding path program 1 times [2023-11-29 01:07:35,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:07:35,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231724073] [2023-11-29 01:07:35,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:35,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:07:35,304 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:07:35,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1876409329] [2023-11-29 01:07:35,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:35,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:07:35,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:07:35,307 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:07:35,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 01:07:35,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:35,839 INFO L262 TraceCheckSpWp]: Trace formula consists of 1409 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 01:07:35,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:07:35,884 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-11-29 01:07:35,884 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:07:35,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:07:35,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231724073] [2023-11-29 01:07:35,885 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:07:35,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876409329] [2023-11-29 01:07:35,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876409329] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:07:35,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:07:35,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:07:35,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112442018] [2023-11-29 01:07:35,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:07:35,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:07:35,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:07:35,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:07:35,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:07:35,889 INFO L87 Difference]: Start difference. First operand 100283 states and 160450 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-29 01:07:40,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:07:40,803 INFO L93 Difference]: Finished difference Result 200565 states and 320899 transitions. [2023-11-29 01:07:40,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:07:40,804 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 553 [2023-11-29 01:07:40,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:07:41,031 INFO L225 Difference]: With dead ends: 200565 [2023-11-29 01:07:41,031 INFO L226 Difference]: Without dead ends: 100283 [2023-11-29 01:07:41,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 552 GetRequests, 551 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 01:07:41,163 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 102 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:07:41,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 835 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:07:41,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100283 states. [2023-11-29 01:07:46,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100283 to 100283. [2023-11-29 01:07:46,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100283 states, 83518 states have (on average 1.5421106827270767) internal successors, (128794), 84070 states have internal predecessors, (128794), 15684 states have call successors, (15684), 1080 states have call predecessors, (15684), 1080 states have return successors, (15684), 15132 states have call predecessors, (15684), 15684 states have call successors, (15684) [2023-11-29 01:07:46,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100283 states to 100283 states and 160162 transitions. [2023-11-29 01:07:46,772 INFO L78 Accepts]: Start accepts. Automaton has 100283 states and 160162 transitions. Word has length 553 [2023-11-29 01:07:46,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:07:46,773 INFO L495 AbstractCegarLoop]: Abstraction has 100283 states and 160162 transitions. [2023-11-29 01:07:46,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-29 01:07:46,773 INFO L276 IsEmpty]: Start isEmpty. Operand 100283 states and 160162 transitions. [2023-11-29 01:07:46,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2023-11-29 01:07:46,798 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:07:46,798 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:07:46,805 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 01:07:46,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 01:07:46,999 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:07:46,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:07:46,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1229359202, now seen corresponding path program 1 times [2023-11-29 01:07:46,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:07:46,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237103801] [2023-11-29 01:07:47,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:47,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:07:47,064 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:07:47,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [833352492] [2023-11-29 01:07:47,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:47,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:07:47,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:07:47,066 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:07:47,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 01:07:47,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:47,495 INFO L262 TraceCheckSpWp]: Trace formula consists of 1409 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:07:47,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:07:47,888 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 1977 proven. 18 refuted. 0 times theorem prover too weak. 10645 trivial. 0 not checked. [2023-11-29 01:07:47,888 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:07:48,171 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 219 proven. 18 refuted. 0 times theorem prover too weak. 12403 trivial. 0 not checked. [2023-11-29 01:07:48,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:07:48,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237103801] [2023-11-29 01:07:48,172 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:07:48,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833352492] [2023-11-29 01:07:48,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833352492] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:07:48,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:07:48,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2023-11-29 01:07:48,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295862219] [2023-11-29 01:07:48,173 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:07:48,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 01:07:48,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:07:48,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 01:07:48,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-29 01:07:48,176 INFO L87 Difference]: Start difference. First operand 100283 states and 160162 transitions. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 2 states have call successors, (86), 2 states have call predecessors, (86), 4 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) [2023-11-29 01:07:51,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:07:51,772 INFO L93 Difference]: Finished difference Result 165181 states and 263187 transitions. [2023-11-29 01:07:51,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 01:07:51,773 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 2 states have call successors, (86), 2 states have call predecessors, (86), 4 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) Word has length 553 [2023-11-29 01:07:51,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:07:51,859 INFO L225 Difference]: With dead ends: 165181 [2023-11-29 01:07:51,859 INFO L226 Difference]: Without dead ends: 64899 [2023-11-29 01:07:51,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1112 GetRequests, 1097 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:07:51,923 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 552 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:07:51,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 973 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:07:51,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64899 states. [2023-11-29 01:07:55,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64899 to 63987. [2023-11-29 01:07:55,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63987 states, 53606 states have (on average 1.5410588366973845) internal successors, (82610), 53954 states have internal predecessors, (82610), 9696 states have call successors, (9696), 684 states have call predecessors, (9696), 684 states have return successors, (9696), 9348 states have call predecessors, (9696), 9696 states have call successors, (9696) [2023-11-29 01:07:55,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63987 states to 63987 states and 102002 transitions. [2023-11-29 01:07:55,812 INFO L78 Accepts]: Start accepts. Automaton has 63987 states and 102002 transitions. Word has length 553 [2023-11-29 01:07:55,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:07:55,813 INFO L495 AbstractCegarLoop]: Abstraction has 63987 states and 102002 transitions. [2023-11-29 01:07:55,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 2 states have call successors, (86), 2 states have call predecessors, (86), 4 states have return successors, (87), 2 states have call predecessors, (87), 2 states have call successors, (87) [2023-11-29 01:07:55,813 INFO L276 IsEmpty]: Start isEmpty. Operand 63987 states and 102002 transitions. [2023-11-29 01:07:55,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2023-11-29 01:07:55,853 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:07:55,853 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:07:55,860 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 01:07:56,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 01:07:56,054 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:07:56,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:07:56,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1363372708, now seen corresponding path program 1 times [2023-11-29 01:07:56,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:07:56,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710390662] [2023-11-29 01:07:56,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:56,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:07:56,137 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:07:56,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2036608523] [2023-11-29 01:07:56,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:07:56,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:07:56,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:07:56,139 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:07:56,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 01:07:56,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:07:56,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 1408 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 01:07:56,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:07:57,412 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-11-29 01:07:57,413 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:07:57,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:07:57,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710390662] [2023-11-29 01:07:57,413 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:07:57,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036608523] [2023-11-29 01:07:57,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036608523] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:07:57,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:07:57,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:07:57,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328313803] [2023-11-29 01:07:57,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:07:57,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:07:57,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:07:57,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:07:57,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:07:57,416 INFO L87 Difference]: Start difference. First operand 63987 states and 102002 transitions. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-29 01:08:00,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:08:00,167 INFO L93 Difference]: Finished difference Result 96049 states and 153743 transitions. [2023-11-29 01:08:00,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:08:00,168 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 553 [2023-11-29 01:08:00,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:08:00,268 INFO L225 Difference]: With dead ends: 96049 [2023-11-29 01:08:00,268 INFO L226 Difference]: Without dead ends: 71159 [2023-11-29 01:08:00,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 549 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:08:00,294 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 283 mSDsluCounter, 1138 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 1729 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:08:00,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 1729 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:08:00,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71159 states. [2023-11-29 01:08:03,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71159 to 64707. [2023-11-29 01:08:03,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64707 states, 54326 states have (on average 1.543312594337886) internal successors, (83842), 54674 states have internal predecessors, (83842), 9696 states have call successors, (9696), 684 states have call predecessors, (9696), 684 states have return successors, (9696), 9348 states have call predecessors, (9696), 9696 states have call successors, (9696) [2023-11-29 01:08:03,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64707 states to 64707 states and 103234 transitions. [2023-11-29 01:08:03,930 INFO L78 Accepts]: Start accepts. Automaton has 64707 states and 103234 transitions. Word has length 553 [2023-11-29 01:08:03,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:08:03,930 INFO L495 AbstractCegarLoop]: Abstraction has 64707 states and 103234 transitions. [2023-11-29 01:08:03,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-29 01:08:03,931 INFO L276 IsEmpty]: Start isEmpty. Operand 64707 states and 103234 transitions. [2023-11-29 01:08:03,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2023-11-29 01:08:03,952 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:08:03,952 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:08:03,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 01:08:04,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 01:08:04,153 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:08:04,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:08:04,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1422067264, now seen corresponding path program 1 times [2023-11-29 01:08:04,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:08:04,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102683142] [2023-11-29 01:08:04,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:08:04,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:08:04,213 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:08:04,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [632120302] [2023-11-29 01:08:04,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:08:04,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:08:04,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:08:04,215 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:08:04,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 01:08:04,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:08:04,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 1413 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 01:08:04,736 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:08:05,213 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 699 proven. 231 refuted. 0 times theorem prover too weak. 11710 trivial. 0 not checked. [2023-11-29 01:08:05,214 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:08:05,563 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 6 proven. 231 refuted. 0 times theorem prover too weak. 12403 trivial. 0 not checked. [2023-11-29 01:08:05,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:08:05,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102683142] [2023-11-29 01:08:05,564 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:08:05,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632120302] [2023-11-29 01:08:05,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632120302] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:08:05,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:08:05,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2023-11-29 01:08:05,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551149074] [2023-11-29 01:08:05,565 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:08:05,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:08:05,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:08:05,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:08:05,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:08:05,567 INFO L87 Difference]: Start difference. First operand 64707 states and 103234 transitions. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 2 states have call successors, (157), 2 states have call predecessors, (157), 4 states have return successors, (158), 2 states have call predecessors, (158), 2 states have call successors, (158) [2023-11-29 01:08:09,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:08:09,016 INFO L93 Difference]: Finished difference Result 109367 states and 172315 transitions. [2023-11-29 01:08:09,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 01:08:09,016 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 2 states have call successors, (157), 2 states have call predecessors, (157), 4 states have return successors, (158), 2 states have call predecessors, (158), 2 states have call successors, (158) Word has length 553 [2023-11-29 01:08:09,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:08:09,087 INFO L225 Difference]: With dead ends: 109367 [2023-11-29 01:08:09,088 INFO L226 Difference]: Without dead ends: 44661 [2023-11-29 01:08:09,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1108 GetRequests, 1098 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:08:09,140 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 233 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:08:09,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 965 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 01:08:09,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44661 states. [2023-11-29 01:08:12,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44661 to 43602. [2023-11-29 01:08:12,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43602 states, 33411 states have (on average 1.4753524288408009) internal successors, (49293), 33568 states have internal predecessors, (49293), 9314 states have call successors, (9314), 876 states have call predecessors, (9314), 876 states have return successors, (9314), 9157 states have call predecessors, (9314), 9314 states have call successors, (9314) [2023-11-29 01:08:12,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43602 states to 43602 states and 67921 transitions. [2023-11-29 01:08:12,396 INFO L78 Accepts]: Start accepts. Automaton has 43602 states and 67921 transitions. Word has length 553 [2023-11-29 01:08:12,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:08:12,397 INFO L495 AbstractCegarLoop]: Abstraction has 43602 states and 67921 transitions. [2023-11-29 01:08:12,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 2 states have call successors, (157), 2 states have call predecessors, (157), 4 states have return successors, (158), 2 states have call predecessors, (158), 2 states have call successors, (158) [2023-11-29 01:08:12,397 INFO L276 IsEmpty]: Start isEmpty. Operand 43602 states and 67921 transitions. [2023-11-29 01:08:12,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 554 [2023-11-29 01:08:12,410 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:08:12,411 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:08:12,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 01:08:12,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-29 01:08:12,611 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:08:12,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:08:12,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1053493702, now seen corresponding path program 1 times [2023-11-29 01:08:12,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:08:12,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604418828] [2023-11-29 01:08:12,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:08:12,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:08:12,669 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:08:12,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [741094179] [2023-11-29 01:08:12,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:08:12,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:08:12,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:08:12,671 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:08:12,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 01:08:13,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:08:13,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 1411 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:08:13,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:08:13,681 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-11-29 01:08:13,681 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:08:13,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:08:13,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604418828] [2023-11-29 01:08:13,681 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:08:13,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741094179] [2023-11-29 01:08:13,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741094179] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:08:13,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:08:13,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:08:13,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119267855] [2023-11-29 01:08:13,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:08:13,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:08:13,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:08:13,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:08:13,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:08:13,684 INFO L87 Difference]: Start difference. First operand 43602 states and 67921 transitions. Second operand has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-29 01:08:18,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:08:18,325 INFO L93 Difference]: Finished difference Result 108264 states and 168334 transitions. [2023-11-29 01:08:18,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:08:18,326 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 553 [2023-11-29 01:08:18,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:08:18,439 INFO L225 Difference]: With dead ends: 108264 [2023-11-29 01:08:18,440 INFO L226 Difference]: Without dead ends: 64666 [2023-11-29 01:08:18,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 549 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:08:18,488 INFO L413 NwaCegarLoop]: 966 mSDtfsCounter, 1043 mSDsluCounter, 1688 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1043 SdHoareTripleChecker+Valid, 2654 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:08:18,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1043 Valid, 2654 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 01:08:18,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64666 states. [2023-11-29 01:08:22,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64666 to 57926. [2023-11-29 01:08:22,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57926 states, 44339 states have (on average 1.4694287196373397) internal successors, (65153), 44548 states have internal predecessors, (65153), 12418 states have call successors, (12418), 1168 states have call predecessors, (12418), 1168 states have return successors, (12418), 12209 states have call predecessors, (12418), 12418 states have call successors, (12418) [2023-11-29 01:08:23,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57926 states to 57926 states and 89989 transitions. [2023-11-29 01:08:23,016 INFO L78 Accepts]: Start accepts. Automaton has 57926 states and 89989 transitions. Word has length 553 [2023-11-29 01:08:23,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:08:23,017 INFO L495 AbstractCegarLoop]: Abstraction has 57926 states and 89989 transitions. [2023-11-29 01:08:23,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.2) internal successors, (156), 5 states have internal predecessors, (156), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-29 01:08:23,017 INFO L276 IsEmpty]: Start isEmpty. Operand 57926 states and 89989 transitions. [2023-11-29 01:08:23,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2023-11-29 01:08:23,026 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:08:23,027 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:08:23,033 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 01:08:23,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-29 01:08:23,227 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:08:23,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:08:23,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1139525127, now seen corresponding path program 1 times [2023-11-29 01:08:23,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:08:23,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893365785] [2023-11-29 01:08:23,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:08:23,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:08:23,285 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:08:23,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [51383372] [2023-11-29 01:08:23,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:08:23,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:08:23,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:08:23,286 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:08:23,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 01:08:23,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:08:23,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 1418 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 01:08:23,802 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:08:24,156 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-11-29 01:08:24,156 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:08:24,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:08:24,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893365785] [2023-11-29 01:08:24,157 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:08:24,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51383372] [2023-11-29 01:08:24,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51383372] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:08:24,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:08:24,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:08:24,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735094581] [2023-11-29 01:08:24,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:08:24,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:08:24,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:08:24,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:08:24,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:08:24,159 INFO L87 Difference]: Start difference. First operand 57926 states and 89989 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-29 01:08:28,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:08:28,388 INFO L93 Difference]: Finished difference Result 127075 states and 197998 transitions. [2023-11-29 01:08:28,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:08:28,389 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 555 [2023-11-29 01:08:28,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:08:28,488 INFO L225 Difference]: With dead ends: 127075 [2023-11-29 01:08:28,488 INFO L226 Difference]: Without dead ends: 69153 [2023-11-29 01:08:28,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 552 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 01:08:28,546 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 372 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 1442 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:08:28,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 1442 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 01:08:28,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69153 states. [2023-11-29 01:08:32,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69153 to 58085. [2023-11-29 01:08:32,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58085 states, 44414 states have (on average 1.4687260773629935) internal successors, (65232), 44622 states have internal predecessors, (65232), 12496 states have call successors, (12496), 1174 states have call predecessors, (12496), 1174 states have return successors, (12496), 12288 states have call predecessors, (12496), 12496 states have call successors, (12496) [2023-11-29 01:08:32,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58085 states to 58085 states and 90224 transitions. [2023-11-29 01:08:32,998 INFO L78 Accepts]: Start accepts. Automaton has 58085 states and 90224 transitions. Word has length 555 [2023-11-29 01:08:32,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:08:32,999 INFO L495 AbstractCegarLoop]: Abstraction has 58085 states and 90224 transitions. [2023-11-29 01:08:32,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 3 states have internal predecessors, (158), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-29 01:08:32,999 INFO L276 IsEmpty]: Start isEmpty. Operand 58085 states and 90224 transitions. [2023-11-29 01:08:33,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2023-11-29 01:08:33,008 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:08:33,009 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:08:33,016 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 01:08:33,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:08:33,210 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:08:33,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:08:33,210 INFO L85 PathProgramCache]: Analyzing trace with hash 493594079, now seen corresponding path program 1 times [2023-11-29 01:08:33,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:08:33,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141473617] [2023-11-29 01:08:33,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:08:33,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:08:33,270 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:08:33,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1333524538] [2023-11-29 01:08:33,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:08:33,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:08:33,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:08:33,272 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:08:33,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 01:08:33,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:08:33,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 1418 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-29 01:08:33,833 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:08:34,776 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-11-29 01:08:34,777 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:08:34,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:08:34,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141473617] [2023-11-29 01:08:34,777 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:08:34,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333524538] [2023-11-29 01:08:34,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333524538] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:08:34,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:08:34,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 01:08:34,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525040029] [2023-11-29 01:08:34,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:08:34,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 01:08:34,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:08:34,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 01:08:34,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:08:34,779 INFO L87 Difference]: Start difference. First operand 58085 states and 90224 transitions. Second operand has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-29 01:08:40,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:08:40,160 INFO L93 Difference]: Finished difference Result 178571 states and 280644 transitions. [2023-11-29 01:08:40,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 01:08:40,161 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 556 [2023-11-29 01:08:40,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:08:40,319 INFO L225 Difference]: With dead ends: 178571 [2023-11-29 01:08:40,319 INFO L226 Difference]: Without dead ends: 120649 [2023-11-29 01:08:40,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 546 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=278, Invalid=778, Unknown=0, NotChecked=0, Total=1056 [2023-11-29 01:08:40,380 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 4625 mSDsluCounter, 4540 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4625 SdHoareTripleChecker+Valid, 5149 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 01:08:40,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4625 Valid, 5149 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 01:08:40,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120649 states. [2023-11-29 01:08:45,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120649 to 65963. [2023-11-29 01:08:45,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65963 states, 52292 states have (on average 1.4862311634666872) internal successors, (77718), 52500 states have internal predecessors, (77718), 12496 states have call successors, (12496), 1174 states have call predecessors, (12496), 1174 states have return successors, (12496), 12288 states have call predecessors, (12496), 12496 states have call successors, (12496) [2023-11-29 01:08:45,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65963 states to 65963 states and 102710 transitions. [2023-11-29 01:08:45,232 INFO L78 Accepts]: Start accepts. Automaton has 65963 states and 102710 transitions. Word has length 556 [2023-11-29 01:08:45,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:08:45,232 INFO L495 AbstractCegarLoop]: Abstraction has 65963 states and 102710 transitions. [2023-11-29 01:08:45,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 12 states have internal predecessors, (159), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-29 01:08:45,232 INFO L276 IsEmpty]: Start isEmpty. Operand 65963 states and 102710 transitions. [2023-11-29 01:08:45,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2023-11-29 01:08:45,244 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:08:45,245 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:08:45,251 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 01:08:45,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:08:45,445 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:08:45,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:08:45,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1463235577, now seen corresponding path program 1 times [2023-11-29 01:08:45,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:08:45,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812002247] [2023-11-29 01:08:45,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:08:45,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:08:45,501 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:08:45,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [563094649] [2023-11-29 01:08:45,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:08:45,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:08:45,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:08:45,502 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:08:45,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 01:08:45,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:08:46,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 1412 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 01:08:46,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:08:47,239 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-11-29 01:08:47,240 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:08:47,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:08:47,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812002247] [2023-11-29 01:08:47,240 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:08:47,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563094649] [2023-11-29 01:08:47,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563094649] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:08:47,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:08:47,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 01:08:47,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196780673] [2023-11-29 01:08:47,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:08:47,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 01:08:47,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:08:47,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 01:08:47,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:08:47,243 INFO L87 Difference]: Start difference. First operand 65963 states and 102710 transitions. Second operand has 12 states, 12 states have (on average 13.25) internal successors, (159), 11 states have internal predecessors, (159), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-29 01:08:55,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:08:55,004 INFO L93 Difference]: Finished difference Result 293367 states and 463358 transitions. [2023-11-29 01:08:55,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-29 01:08:55,005 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 11 states have internal predecessors, (159), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 556 [2023-11-29 01:08:55,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:08:55,292 INFO L225 Difference]: With dead ends: 293367 [2023-11-29 01:08:55,292 INFO L226 Difference]: Without dead ends: 223935 [2023-11-29 01:08:55,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 573 GetRequests, 545 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=247, Invalid=623, Unknown=0, NotChecked=0, Total=870 [2023-11-29 01:08:55,363 INFO L413 NwaCegarLoop]: 572 mSDtfsCounter, 4207 mSDsluCounter, 3195 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4207 SdHoareTripleChecker+Valid, 3767 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:08:55,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4207 Valid, 3767 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 01:08:55,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223935 states. [2023-11-29 01:09:04,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223935 to 101332. [2023-11-29 01:09:04,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101332 states, 80951 states have (on average 1.4926684043433682) internal successors, (120833), 81264 states have internal predecessors, (120833), 18627 states have call successors, (18627), 1753 states have call predecessors, (18627), 1753 states have return successors, (18627), 18314 states have call predecessors, (18627), 18627 states have call successors, (18627) [2023-11-29 01:09:04,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101332 states to 101332 states and 158087 transitions. [2023-11-29 01:09:04,838 INFO L78 Accepts]: Start accepts. Automaton has 101332 states and 158087 transitions. Word has length 556 [2023-11-29 01:09:04,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:09:04,839 INFO L495 AbstractCegarLoop]: Abstraction has 101332 states and 158087 transitions. [2023-11-29 01:09:04,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.25) internal successors, (159), 11 states have internal predecessors, (159), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-29 01:09:04,839 INFO L276 IsEmpty]: Start isEmpty. Operand 101332 states and 158087 transitions. [2023-11-29 01:09:04,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2023-11-29 01:09:04,862 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:09:04,862 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:09:04,869 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-29 01:09:05,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:09:05,063 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:09:05,063 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:09:05,063 INFO L85 PathProgramCache]: Analyzing trace with hash -892569673, now seen corresponding path program 1 times [2023-11-29 01:09:05,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:09:05,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282326611] [2023-11-29 01:09:05,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:09:05,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:09:05,120 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:09:05,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [968648642] [2023-11-29 01:09:05,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:09:05,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:09:05,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:09:05,121 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:09:05,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 01:09:05,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:09:05,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 1413 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 01:09:05,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:09:05,973 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-11-29 01:09:05,973 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:09:05,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:09:05,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282326611] [2023-11-29 01:09:05,973 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:09:05,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968648642] [2023-11-29 01:09:05,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968648642] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:09:05,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:09:05,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:09:05,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630018342] [2023-11-29 01:09:05,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:09:05,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:09:05,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:09:05,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:09:05,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:09:05,976 INFO L87 Difference]: Start difference. First operand 101332 states and 158087 transitions. Second operand has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-29 01:09:10,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-11-29 01:09:16,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:09:16,337 INFO L93 Difference]: Finished difference Result 163572 states and 256284 transitions. [2023-11-29 01:09:16,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 01:09:16,338 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 556 [2023-11-29 01:09:16,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:09:16,505 INFO L225 Difference]: With dead ends: 163572 [2023-11-29 01:09:16,505 INFO L226 Difference]: Without dead ends: 106764 [2023-11-29 01:09:16,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 551 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 01:09:16,562 INFO L413 NwaCegarLoop]: 665 mSDtfsCounter, 1017 mSDsluCounter, 1608 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1017 SdHoareTripleChecker+Valid, 2273 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-11-29 01:09:16,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1017 Valid, 2273 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 471 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2023-11-29 01:09:16,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106764 states. [2023-11-29 01:09:23,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106764 to 101748. [2023-11-29 01:09:23,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101748 states, 81367 states have (on average 1.4931974879250802) internal successors, (121497), 81680 states have internal predecessors, (121497), 18627 states have call successors, (18627), 1753 states have call predecessors, (18627), 1753 states have return successors, (18627), 18314 states have call predecessors, (18627), 18627 states have call successors, (18627) [2023-11-29 01:09:23,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101748 states to 101748 states and 158751 transitions. [2023-11-29 01:09:23,532 INFO L78 Accepts]: Start accepts. Automaton has 101748 states and 158751 transitions. Word has length 556 [2023-11-29 01:09:23,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:09:23,533 INFO L495 AbstractCegarLoop]: Abstraction has 101748 states and 158751 transitions. [2023-11-29 01:09:23,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-29 01:09:23,533 INFO L276 IsEmpty]: Start isEmpty. Operand 101748 states and 158751 transitions. [2023-11-29 01:09:23,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2023-11-29 01:09:23,555 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:09:23,556 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:09:23,563 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 01:09:23,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:09:23,757 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:09:23,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:09:23,757 INFO L85 PathProgramCache]: Analyzing trace with hash -946962571, now seen corresponding path program 1 times [2023-11-29 01:09:23,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:09:23,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88680487] [2023-11-29 01:09:23,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:09:23,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:09:23,811 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:09:23,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1396691011] [2023-11-29 01:09:23,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:09:23,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:09:23,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:09:23,812 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:09:23,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 01:09:24,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:09:24,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 1411 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 01:09:24,371 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:09:25,093 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 1977 proven. 18 refuted. 0 times theorem prover too weak. 10645 trivial. 0 not checked. [2023-11-29 01:09:25,093 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:09:25,781 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 219 proven. 18 refuted. 0 times theorem prover too weak. 12403 trivial. 0 not checked. [2023-11-29 01:09:25,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:09:25,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88680487] [2023-11-29 01:09:25,781 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:09:25,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396691011] [2023-11-29 01:09:25,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396691011] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:09:25,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:09:25,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 15 [2023-11-29 01:09:25,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617419649] [2023-11-29 01:09:25,782 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:09:25,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 01:09:25,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:09:25,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 01:09:25,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2023-11-29 01:09:25,785 INFO L87 Difference]: Start difference. First operand 101748 states and 158751 transitions. Second operand has 15 states, 15 states have (on average 20.133333333333333) internal successors, (302), 15 states have internal predecessors, (302), 4 states have call successors, (160), 3 states have call predecessors, (160), 5 states have return successors, (160), 4 states have call predecessors, (160), 4 states have call successors, (160) [2023-11-29 01:09:35,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:09:35,737 INFO L93 Difference]: Finished difference Result 224017 states and 351223 transitions. [2023-11-29 01:09:35,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 01:09:35,737 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 20.133333333333333) internal successors, (302), 15 states have internal predecessors, (302), 4 states have call successors, (160), 3 states have call predecessors, (160), 5 states have return successors, (160), 4 states have call predecessors, (160), 4 states have call successors, (160) Word has length 556 [2023-11-29 01:09:35,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:09:35,995 INFO L225 Difference]: With dead ends: 224017 [2023-11-29 01:09:35,995 INFO L226 Difference]: Without dead ends: 166601 [2023-11-29 01:09:36,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1120 GetRequests, 1098 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2023-11-29 01:09:36,069 INFO L413 NwaCegarLoop]: 766 mSDtfsCounter, 1734 mSDsluCounter, 2599 mSDsCounter, 0 mSdLazyCounter, 1210 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1806 SdHoareTripleChecker+Valid, 3365 SdHoareTripleChecker+Invalid, 1367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 01:09:36,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1806 Valid, 3365 Invalid, 1367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1210 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 01:09:36,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166601 states. [2023-11-29 01:09:44,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166601 to 100804. [2023-11-29 01:09:44,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100804 states, 80423 states have (on average 1.4903323676062818) internal successors, (119857), 80736 states have internal predecessors, (119857), 18627 states have call successors, (18627), 1753 states have call predecessors, (18627), 1753 states have return successors, (18627), 18314 states have call predecessors, (18627), 18627 states have call successors, (18627) [2023-11-29 01:09:44,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100804 states to 100804 states and 157111 transitions. [2023-11-29 01:09:44,755 INFO L78 Accepts]: Start accepts. Automaton has 100804 states and 157111 transitions. Word has length 556 [2023-11-29 01:09:44,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:09:44,756 INFO L495 AbstractCegarLoop]: Abstraction has 100804 states and 157111 transitions. [2023-11-29 01:09:44,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 20.133333333333333) internal successors, (302), 15 states have internal predecessors, (302), 4 states have call successors, (160), 3 states have call predecessors, (160), 5 states have return successors, (160), 4 states have call predecessors, (160), 4 states have call successors, (160) [2023-11-29 01:09:44,756 INFO L276 IsEmpty]: Start isEmpty. Operand 100804 states and 157111 transitions. [2023-11-29 01:09:44,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2023-11-29 01:09:44,771 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:09:44,772 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:09:44,779 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-29 01:09:44,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:09:44,972 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:09:44,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:09:44,973 INFO L85 PathProgramCache]: Analyzing trace with hash -2144116197, now seen corresponding path program 1 times [2023-11-29 01:09:44,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:09:44,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132243548] [2023-11-29 01:09:44,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:09:44,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:09:45,024 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:09:45,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1477255955] [2023-11-29 01:09:45,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:09:45,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:09:45,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:09:45,025 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:09:45,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 01:09:45,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:09:45,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 1416 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 01:09:45,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:09:45,723 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12640 trivial. 0 not checked. [2023-11-29 01:09:45,723 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:09:45,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:09:45,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132243548] [2023-11-29 01:09:45,724 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:09:45,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477255955] [2023-11-29 01:09:45,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477255955] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:09:45,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:09:45,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 01:09:45,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160028357] [2023-11-29 01:09:45,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:09:45,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 01:09:45,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:09:45,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 01:09:45,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 01:09:45,726 INFO L87 Difference]: Start difference. First operand 100804 states and 157111 transitions. Second operand has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-29 01:09:58,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:09:58,803 INFO L93 Difference]: Finished difference Result 280243 states and 438857 transitions. [2023-11-29 01:09:58,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 01:09:58,804 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) Word has length 556 [2023-11-29 01:09:58,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:09:59,091 INFO L225 Difference]: With dead ends: 280243 [2023-11-29 01:09:59,091 INFO L226 Difference]: Without dead ends: 179449 [2023-11-29 01:09:59,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 563 GetRequests, 551 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2023-11-29 01:09:59,184 INFO L413 NwaCegarLoop]: 819 mSDtfsCounter, 3883 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 824 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3883 SdHoareTripleChecker+Valid, 2903 SdHoareTripleChecker+Invalid, 1640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 824 IncrementalHoareTripleChecker+Valid, 816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-29 01:09:59,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3883 Valid, 2903 Invalid, 1640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [824 Valid, 816 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-29 01:09:59,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179449 states. [2023-11-29 01:10:09,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179449 to 124498. [2023-11-29 01:10:09,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124498 states, 99023 states have (on average 1.4829888005816831) internal successors, (146850), 99414 states have internal predecessors, (146850), 23283 states have call successors, (23283), 2191 states have call predecessors, (23283), 2191 states have return successors, (23283), 22892 states have call predecessors, (23283), 23283 states have call successors, (23283) [2023-11-29 01:10:10,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124498 states to 124498 states and 193416 transitions. [2023-11-29 01:10:10,480 INFO L78 Accepts]: Start accepts. Automaton has 124498 states and 193416 transitions. Word has length 556 [2023-11-29 01:10:10,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:10:10,481 INFO L495 AbstractCegarLoop]: Abstraction has 124498 states and 193416 transitions. [2023-11-29 01:10:10,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 1 states have call successors, (80), 1 states have call predecessors, (80), 1 states have return successors, (80), 1 states have call predecessors, (80), 1 states have call successors, (80) [2023-11-29 01:10:10,481 INFO L276 IsEmpty]: Start isEmpty. Operand 124498 states and 193416 transitions. [2023-11-29 01:10:10,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2023-11-29 01:10:10,496 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:10:10,496 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:10:10,503 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-29 01:10:10,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:10:10,697 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:10:10,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:10:10,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1190176039, now seen corresponding path program 1 times [2023-11-29 01:10:10,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:10:10,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984366613] [2023-11-29 01:10:10,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:10:10,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:10:10,753 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:10:10,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [308198923] [2023-11-29 01:10:10,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:10:10,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:10:10,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:10:10,755 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:10:10,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 01:10:11,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:10:11,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 1417 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 01:10:11,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:10:11,817 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 6327 proven. 105 refuted. 0 times theorem prover too weak. 6208 trivial. 0 not checked. [2023-11-29 01:10:11,817 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 01:10:12,476 INFO L134 CoverageAnalysis]: Checked inductivity of 12640 backedges. 132 proven. 105 refuted. 0 times theorem prover too weak. 12403 trivial. 0 not checked. [2023-11-29 01:10:12,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:10:12,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984366613] [2023-11-29 01:10:12,476 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:10:12,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308198923] [2023-11-29 01:10:12,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308198923] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 01:10:12,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 01:10:12,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 17 [2023-11-29 01:10:12,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748991232] [2023-11-29 01:10:12,477 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 01:10:12,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 01:10:12,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:10:12,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 01:10:12,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2023-11-29 01:10:12,480 INFO L87 Difference]: Start difference. First operand 124498 states and 193416 transitions. Second operand has 17 states, 17 states have (on average 14.0) internal successors, (238), 17 states have internal predecessors, (238), 2 states have call successors, (115), 2 states have call predecessors, (115), 4 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) [2023-11-29 01:10:34,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:10:34,369 INFO L93 Difference]: Finished difference Result 574602 states and 904678 transitions. [2023-11-29 01:10:34,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-29 01:10:34,370 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), 2 states have call successors, (115), 2 states have call predecessors, (115), 4 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) Word has length 556 [2023-11-29 01:10:34,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:10:35,259 INFO L225 Difference]: With dead ends: 574602 [2023-11-29 01:10:35,259 INFO L226 Difference]: Without dead ends: 450114 [2023-11-29 01:10:35,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1131 GetRequests, 1095 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=310, Invalid=1022, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 01:10:35,408 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 5548 mSDsluCounter, 5021 mSDsCounter, 0 mSdLazyCounter, 3072 mSolverCounterSat, 610 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5593 SdHoareTripleChecker+Valid, 5879 SdHoareTripleChecker+Invalid, 3682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 610 IncrementalHoareTripleChecker+Valid, 3072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:10:35,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5593 Valid, 5879 Invalid, 3682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [610 Valid, 3072 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-29 01:10:35,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450114 states. [2023-11-29 01:10:52,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450114 to 143295. [2023-11-29 01:10:52,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143295 states, 117537 states have (on average 1.4912410560078955) internal successors, (175276), 117928 states have internal predecessors, (175276), 23324 states have call successors, (23324), 2433 states have call predecessors, (23324), 2433 states have return successors, (23324), 22933 states have call predecessors, (23324), 23324 states have call successors, (23324) [2023-11-29 01:10:52,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143295 states to 143295 states and 221924 transitions. [2023-11-29 01:10:52,829 INFO L78 Accepts]: Start accepts. Automaton has 143295 states and 221924 transitions. Word has length 556 [2023-11-29 01:10:52,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:10:52,830 INFO L495 AbstractCegarLoop]: Abstraction has 143295 states and 221924 transitions. [2023-11-29 01:10:52,830 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), 2 states have call successors, (115), 2 states have call predecessors, (115), 4 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) [2023-11-29 01:10:52,830 INFO L276 IsEmpty]: Start isEmpty. Operand 143295 states and 221924 transitions. [2023-11-29 01:10:52,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2023-11-29 01:10:52,847 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:10:52,848 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:10:52,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-29 01:10:53,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:10:53,050 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:10:53,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:10:53,051 INFO L85 PathProgramCache]: Analyzing trace with hash 348163991, now seen corresponding path program 1 times [2023-11-29 01:10:53,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:10:53,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811501491] [2023-11-29 01:10:53,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:10:53,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:10:53,149 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:10:53,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1400625694] [2023-11-29 01:10:53,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:10:53,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:10:53,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:10:53,151 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:10:53,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80af0d88-e9c9-4731-a36d-4250f74f7517/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 01:10:53,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:10:53,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 1416 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 01:10:53,842 INFO L285 TraceCheckSpWp]: Computing forward predicates...